Protozoa - class-IX
Description: protozoa | |
Number of Questions: 51 | |
Created by: Supriya Thakkar | |
Tags: biology classification of plants biodiversity and classification biodiversity living world and classification of microbes diversity in living organisms-classification the world of microbes characteristics and classification of living organisms five kingdom classification diversity in living organisms |
To which kingdom Amoeba and Euglena belong in Whittaker's classification?
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Monera
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Plantae
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Protista
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Animalia
The five kingdom classification was proposed by R.H. Whittaker in 1969. The five kingdoms were formed on the basis of characteristics such as cell structure, mode of nutrition, the source of nutrition and body organization. It includes Kingdom Monera, Protista, Fungi, Plantae, and Animalia. According to Whittaker's 5 kingdom classification, unicellular eukaryotes belong to kingdom Protista. Amoeba and euglena are unicellular eukaryotic organisms so they belong to kingdom Protista.
Which do not belong to Protista?
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Euglenoids
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Zooflagellates
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Methanogens
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Ciliates
Read the following statements.
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Contractile vacuoles eliminates excess water from the body
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Glomerular kidney is present in Fresh water fishes
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A glomerular kidney possess less no. of nephrons
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Chloride cells are present on the stomach wall of frog
Contractile vacuoles are membrane-bound cellular organelle found in many microorganisms. These periodically expand and get filled with water and contract, expelling the contents to the exterior of the cell.
Protista includes ________________.
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Eutaryotic organisms
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Autotrophic in nutrition
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Heterotrophic in nutrition
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All organisms which show locomotion
- Kingdom Protista includes Eukaryotes can be unicellular or multicellular. they produce sexually or asexually eg. Plasmodium( cause malaria) , Ameoba.
- Autotrophic organism creat their own food by fixing carbon . kingdom Plantae includes all unicellular or multicellular autotrophic organism.
- Heterotrophic organism obtain their food from organic sources , hence kingdom Fungi and kindom Animalia includes heterotrophic organism.
- so the correct answer is "eukaryotic organism".
Protista includes
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Eukaryotic organisms
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Autotrophic in nutrition
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Heterotrophic in nutrition
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All organisms which show locomotion
A protist is any eukaryotic organism that is not an animal, plant or fungus. The protists do not form a natural group, or clade since they exclude certain eukaryotes; but, like algae or invertebrates, they are often grouped together for convenience.
Find the incorrect match
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Whirling whips ---- Peridinin
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Soap box protistans -------- Leucosin
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Photosynthetic spindle protistans -------- Chrysolaminarin
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Protistan fungi -------- Fat droplets
Diatoms are protistand in which the cell walls form two thin overlapping shells, which fit together as in a soap box. The walls are embedded with silica.
The protists have
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only free nucleic acid aggregates
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membrane bound nucleoprotein lying embedded in the cytoplasm
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gene containing nucleoproteins condensed together in loose mass
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nucleoprotein in direct contact with the rest of the cell substance
Protists have a membrane-enclosed nucleus and membrane-enclosed organelles. This nucleus is embedded in the cytoplasm. They may be single or many in number and the nucleus has a membrane covering called the nuclear envelope with pores over it.
Kappa-particles show
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Cytoplasmic inheritance
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Nuclear inheritance
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Nucleo-cytoplasmic inheritance
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Mutation
Cytoplasmic inheritance, also known as extranuclear inheritance is actually the transmission of genes that occurs outside the nucleus. Kappa particles show cytoplasmic inheritance. Here phenotype not only depends on the cytoplasm but also on the genetic material of the nucleus.
The correct answer is A.
Two species of Amoeba X and Y were kept in fresh water and got adapted. Species X developed contractile vacuole. When both were transferred to sea water and got adapted, both X and Y lost their contractile vacuole. From these observations, we conclude that
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Both X and Y are marine species
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Species Y is marine and X is fresh water
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Species X is marine and Y is fresh water
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Both X and Y are fresh water
Which of the following is a major evolutionary advance exhibited by protozoan cell in contrast with a bacterium?
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Formation of permeable cell membrane
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Presence of nucleus
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Presence of extensive system of cytoplasmic organelles
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Both A and B
Monerans are prokaryotic organisms. They lack a well-developed nucleus and cell organelles. But, on the contrary, protozoa have a well-developed nucleus and are eukaryotic organisms. Bacteria have a cell wall made of cellulose and chitin. Bacteria lack a cell membrane.
Which protistian structure is not correctly matched with its function?
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Pseudopodia- movement and feeding
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Cyst- reproductive structure
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Eyespot- light detection
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Trichocyst- defense and capture of prey
An organism in it's dormant stage is called a cyst. In these conditions, an organism is inactive and does not perform any daily activities. Thus, they help the organisms survive in unfavourable conditions.
Which of the following kingdoms is intermediate between kingdom monera and muiticellular organisms?
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Fungi
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Animalia
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Plantae
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Protista
Which of the following are the characteristics of kingdom Protista?
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Multicellular organisms whose chromosomes are not enclosed in a nuclear membrane.
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Unicellular organisms whose chromosomes are not enclosed in a nuclear membrane.
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Unicellular organisms whose chromosomes are enclosed in a nuclear membrane.
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Multicellular organisms whose chromosomes are enclosed in a nuclear membrane.
A symbiotic protist is
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Plasmodium
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Lophomonas
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Fuligo
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Trypanosoma
Lophomonas are the protists that can live in a symbiotic relationship or as a parasite in the body of their host. The hosts are arthropods, which could be termites, cockroaches in which lophomonas lives in their digestive system or intestinal tracts.
The correct answer is B.
The first eukaryotes to evolve were
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Bryophytes
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Green algae
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Blue-green algae
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Protistans
- The simple protists were similar to bacteria but they gradually evolved as eukaryotes wherein each cell is having a nucleus.
- They are not an animal, plant or fungus but they may be closely related to plants.
- They may survive alone or may group as per the convenience.
- The correct answer is D.
Which of the following is a symbiont?
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Vorticella
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Paramecium
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Colpidium
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Trichonympha
- Zootermopsis, the pine woods termite, contains vast numbers of the wood engulfing symbiont Trichonympha, along with a number of other species, such as the primitive flagellate, Streblomastix and Trichomonas, a genus commonly found in warm, moist interiors of virtual all species of animals.
- Trichonympha along with these huge cells are bacteria residing in the termite gut assist in breaking down the cellulose. Hence the correct option is D.
Entamoeba histolytica is
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Monogenetic
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Digenetic
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Free-living
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None of the above
Water collecting canals around the contractile vacuole are called _________.
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Incurrent canals
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Excurrent canals
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Radiating canals
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None of the above
Water collecting canals around the contractile vacuole are called Radiating canals The contractile vacuole is the part that contracts and forces extra water out of the cell. The radiating canals are the paths to the contractile vacuole. In Paramecium, these are two contractile vacuoles while one in Amoeba.
Macronucleus of Paramecium takes part in
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Transmission of hereditary characters
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Controlling normal cellular metabolism
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Production of variations and adaptability
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All the above
Entamoeba histolytica secretes proteolytic enzyme called _________.
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Polypeptidase
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Histolysin
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Pepsin
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Trypsin
Entamoeba histolytica secretes proteolytic enzyme called Histolysin.
Maximum speed of a protist is
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20 $\mu m/sec$
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2.0 $mm/sec$
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200 $\mu m/sec$
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2 $ cm/sec$
- The movement of protists is affected by various surrounding factors, certain protists move by special locomotive structures.
- Ciliated cells and flagellated cells move faster than others, but the flagellated cells are able to move as fast as 2.0 mm/sec.
- The correct answer is B.
In Amoeba and Paramecium osmoregulation occurs through
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Pseudopodia
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Nucleus
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Contractile vacuole
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General surface
If all ponds and puddles are destroyed, the organism likely to be destroyed is
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Leishmania
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Trypanosoma
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Ascaris
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Plasmodium
Protistan genome has
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Membrane bound nucleoproteins embedded in cytoplasm
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Free nucleic acid aggregates
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Gene containing nucleoproteins condensed together in loose mass
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Nucleoprotein in direct contact with cell substance
Protista are eukaryotic organism. They have well defined membrane bound nucleus, which encloses genetic material and membrane bound cell organelle in cytoplasm.
Which one is not a protozoan protist?
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Plasmodium vivax
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Paramecium caudatum
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Enterobius vermiclaris
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Trypanosoma gambiense
Which of the following is not a protistan disease?
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Giardiasis
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Amoebiasis
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Sleeping sickness
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Elephantiasis
What is not connected with reproduction of protozoans?
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Cryptogamy
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Schizogamy
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Autogamy
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Conjugation
Schizogeny is the method of reproduction in which production of a sexual individual from an asexual form usually by fission.
Kingdom protista includes
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Life cycle showing sporic meiosis
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Life cycle showing zygotic meiosis
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Life cycle showing gametic meiosis
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Both B and C
Unicellular algae, diatoms and protozoans are members of
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Monera
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Protista
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Fungi
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Plantae
Unicellularity is the characteristic of
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Cyanobacteria
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Monera
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Protista
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All of the above
Which of the following is not a character of protista
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Membrane bound organelles are present in the cell
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Protists are prokaryotic
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Mode of nutrition is both autotrophic and heterotrophic
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Body organisation is cellular
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Some protists have cell walls
Which protistan shows bioluminescence?
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Euglena
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Noctiluca
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Forminiferans
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Diatoms
Noctiluca scintillans belongs to class Flagellata of phylum Protozoa. It is the most common cause of bioluminescence in the ocean. Because of this, it is also called sea sparkle. It produces light throughout the cytoplasm by luciferin- luciferase reaction.
Protista contains
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Euglena, Dinoflagellates and Yeast
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Amoeba, Paramaecium, Hydra
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Euglena, Paramaecium, Mushroom
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Amoeba, Paramaecium and Dinoflagellates/Diatoms
The marine organisms showing spinning movements and responsible for killing fishes by producing toxins belong to the following kingdom of Whittaker
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Fungi
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Animalia
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Monera
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Protista
Proterospongia is considered connecting link between protists and sponges/metazoa due to
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Colonial nature
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Choanocyte type of individual
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Sponge-like nature
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All of the above
Identify the characteristic features of diatoms.
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Cell wall is made of cellulose, floating on water and produce auxospores.
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Cell wall is made of chitin, fixed forms and produce auxospores.
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Cell wall is made of silica, floating on water and produce auxospores.
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Cell wall is made of silica, symbionts and produce zoospores..
Diatoms are the organisms belonging to Chrysophytes of kingdom Protista. Diatoms occur in all aquatic and moist terrestrial habitats. They may be free floating or bottom dwellers. The free-floating forms remain suspended on the surface of water by mucilage secretion and presence of lightweight lipids. The cell wall is made of silica which is known as frustule. The frustule is made up of two valves, epitheca, and hypotheca. The two valves fit together like a soapbox. They produce auxospores. Auxospore is a rejuvenescent cell which is a zygote grown in size.
Which of the following is not a character of protista?
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Protists are eukaryotic.
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Some protists have cell walls.
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Their mode of nutrition is both autotrophic and heterotrophic.
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They have a nucleoid.
When a freshwater protozoan is placed in marine water
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The contractile vacuoles become bigger in size
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The number of contractile vacuoles increases
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The contractile vacuoles disappear
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The contractile vacuoles remain unchanged
When a freshwater protozoan is placed in marine water, the contractile vacuoles disappear. The function of contractile vacuole is to remove the excess water outside by the process of osmoregulation. In marine water, it is necessary to retain the water inside the body instead of out expelling it out. If contractile vacuoles will not disappear, the cell will get dehydrated.
Select the incorrect match:
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Protista: Membrane bound cell organelles present; Monera: Membrane bound cell organelles absent
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Protista: Nucleus present; Monera: Nucleus absent
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Protista: Flagella is made of flagellin protein; Monera: Flagella is made of rubulin protein
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Protista: Cell wall if present, is cellulosic; Monera: Cell wall is made pf peptidogylcan
A Protistan which is commonly called plant-animal is?
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Navicula
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Noctiluca
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Vorticella
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Euglena
- Euglena is a protist that can both eat food and can photosynthesize. When acting as a heterotroph, the Euglena surrounds a particle of food and consumes it by phagocytosis. When acting as an autotroph, the Euglena utilizes chloroplasts to produce sugars by photosynthesis that's why it is said to be a plant-animal.
- Hence A Protistan which is commonly called plant-animal is Euglena.
- So, the correct answer is 'Euglena'.
Sex first originated in
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Protistans
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Simple algae
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Angiosperms
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Both (1) and (2)
(A)Protista are simple eukaryotic organisms that cannot be classified as plant, animal or fungus. They are mostly unicellular, but some are multicellular. They are first originated.
Single celled eukaryotes are included in Kingdom.
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Protista
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Fungi
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Plantae
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Monera.
A protist is any eukaryotic organism (one with cells containing a nucleus) that is not an animal, plant or fungus. The protists do not form a natural group, or clade, since they exclude certain eukaryotes; but, like algae or invertebrates, they are often grouped together for convenience. In some systems of biological classification, such as the popular five-kingdom scheme proposed by Robert Whittaker in 1969, the protists make up a kingdom called Protista, composed of "organisms which are unicellular or unicellular-colonial and which form no tissues".
Complete the analogy
Rhizobium : Bacteria : : Diatoms:........................
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Fungus
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Protozoa
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Bacreria
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Algae
Rhizobium : Bacteria :: Diatoms : Algae
Cell wall plates are found in cell wall of
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Diatoms
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Dinoflagellates
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Both (1) & (2)
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Euglenoids
A.Diatoms – cell wall is made up of silica and cellulose.
B.Dinoflagellates – cell wall is made up of cellulose and is present in the form of plates.
D.Euglenoids – cell wall is absent.
So, the correct option is ‘Dinoflagellates’.
Which of the following kingdoms has no well defined boundaries?
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Monera
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Protista
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Fungi
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None of these
Members of Kingdom Protista are primarily
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parasites
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terrestrial
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aquatic
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photosynthetic
All single-celled eukaryotes are placed under Protista, but the boundaries of this kingdom are not well defined. Members of Protista are primarily aquatic. This kingdom forms a link with the others dealing with plants, animals, and fungi. Being eukaryotes, the protistan cell body contains a well-defined nucleus and other membrane-bound organelles.
In which kingdom will you place an organism which is unicellular, eukaryotic and photosynthetic?
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Kingdom Plantae
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Kingdom Monera
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Kingdom Protista
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Kingdom Animalia
Protists are eukaryotic organisms that are mostly unicellular in nature. They can be mainly classified into three main categories:-
- Animal-like protists, which are heterotrophs and has the ability to move.
- Plant-like protists- that are autotrophs and can photosynthesize.
- Fungi like protist- that are heterotroph and possess a cell with the cell wall.
- Kingdom Plantae includes mainly multicellular, eukaryotic organisms that have the ability to do photosynthesis. Kingdom Monera composed of organisms that are prokaryotic and unicellular.
- Kingdom Animalia includes animals which are eukaryotic multicellular. They do not perform photosynthesis.
Kidney of vertebrates resembles with contractile vacuole of protozonas in
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Expelling out glucose
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Expelling out urea and uric acid
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Expelling out excess of water
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Expelling out salts
Kidneys seem to have evolved in primitive freshwater vertebrates to help them expel the excess water that continuously entered the body by osmosis. Later, kidneys also acquired the function of removing the waste materials from body.
The kidneys in vertebrates are bean-shaped organs that remove excess organic molecules from the blood, and waste products of metabolism. In protozoans, the contractile vacuole does the function of the kidneys of vertebrates an expels the excess water from the system.
Therefore, the correct answer is option c.
This taxonomic group of living organisms is primarily comprised of unicellular eukaryotes but does some members which are colonial, and some which display true multicellularity. The cells of organisms in this group have a nucleus and membrane-bound organelles, and include both autotrophic and heterotrophic organisms.
Which taxonomic group of organisms is described above?
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Kingdom Plantae
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Kingdom Fungi
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Kingdom Animalia
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Kingdom Protista
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Domain Bacteria
Choose the correct answers from the alternatives given.
Which of the following protists do not have multicellular representatives?
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Chrysophyta
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Phaeophyta
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Rhodophyta
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All of these include multicellular representatives
Chrysophyta, Phaeophyta, Rhodophyta are the group which contains multicellular organisms.
The main function of the contractile vacuole is
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Synthesis of carbohydrate
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Eliminating excess water
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To be a photoreceptor to detect light
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Resistance for survival during winter and times of drought
The contractile vacuole is a structure found in many marine organisms. It functions as an organelle to eliminate the excess water which may have stored in the cell because of osmotic conditions.