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Kingdom Protista

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What is the cellular form of a protist?

  1. Uninucleated

  2. Binucleated

  3. Multinucleated

  4. All of these


Correct Option: D
Explanation:

 Protists are uninucleated, binucleated and multinucleated.

The mode of nutrition in Protista is/are

  1. autotrophic

  2. heterotrophic

  3. parasitic

  4. all of these


Correct Option: D
Explanation:

protist may have chlorophyll to prepare their own food, or may take up food from surroundings or even live as parasite on the host.

The nucleus in which the nuclear membrane is absent is called a

  1. prokaryon

  2. mesokaryon

  3. synkaryon

  4. eukaryon


Correct Option: A
Explanation:

 In prokaryon, nuclear material scattered in the cytoplasm of the cell, rather than bounded by a nuclear membrane; found in some unicellular organisms, such as bacteria.

The mode of nutrition in which digestion occurs outside the body of the organism is called

  1. holotrophy

  2. osmotrophy

  3. phagotrophy

  4. chemotrophy


Correct Option: B
Explanation:

 Osmotrophy is the uptake of dissolved organic compounds by osmosis for nutrition, digestion occurs outside the body of the organism.

The stored food in Euglenoids is

  1. starch

  2. glycogen

  3. peptides

  4. pyrenoids


Correct Option: D
Explanation:

 The stored food in Euglenoids is pyrenoids.

Which of these modes of nutrition is absent in protists?

  1. Photosynthetic

  2. Chemosynthetic

  3. Parasitic

  4. Saprophytic


Correct Option: B
Explanation:

The members of this kingdom show a diverse mode of nutrition. They may be autotrophic or heterotrophic. Heterotrophic forms may be holozoic or parasitic or saprophytic or even mixotrophic (obtaining nourishment by more than one method), but not chemosynthetic.

The cytoplasmic ribosomes in protists are of

  1. 70-S type

  2. 80- S type

  3. 60- S type

  4. 50- S type


Correct Option: B
Explanation:

protists are eukaryotes so they have 80S ribosomes in their cytoplasm.

When a multinucleated protist divides into two or more multinucleated daughter cells, the process is called

  1. plasmotomy

  2. fragmentation

  3. multiple fission

  4. all of these


Correct Option: C
Explanation:

 Multiple fission at the cellular level occurs in many protists, e.g. sporozoans and algae. The nucleus of the parent cell divides several times by mitosis, producing several nuclei. The cytoplasm then separates, creating multiple daughter cells.

Paralytic Shell Fish Poisoning is caused due to

  1. paramecin

  2. haemozoin

  3. saxitoxin

  4. noctilucin


Correct Option: C
Explanation:

 Saxitoxin (STX) is a potent neurotoxin, the best-known paralytic shellfish toxin (PST).

The transverse groove in dinoflagellates is called

  1. cingulum

  2. sulcus

  3. oral groove

  4. aboral groove


Correct Option: A
Explanation:

 The transverse groove in dinoflagellates is called cingulum.

Nutrition in the causative agent of malaria is

  1. saprotrophic

  2. phagotrophic

  3. mixotrophic

  4. parasitic


Correct Option: D
Explanation:

 Parasite is an organism that lives on or in an organism of another species, known as the host, from the body of which it obtains nutriment. Nutrition in the causative agent of malaria is parasitic.

Which of the following protists have hypotheca & epitheca?

  1. Diatoms

  2. Dinoflagellates

  3. Euglenoids

  4. Slimemoulds


Correct Option: A
Explanation:

 Epitheca: This term is used to refer to both the larger, older valve (epitheca) of the frustule as well as the girdle elements (epicingulum) that are connected with it. Hypotheca: This term is used to refer to the smaller, younger valve (hypotheca) of the frustule as well as the girdle elements (hypocingulum) that are connected with it. Diatoms have hypotheca & epitheca.

Protists with saprophytic mode of nutrition are called

  1. decomposers

  2. heterotrophs

  3. parasitic

  4. autotrophs


Correct Option: A
Explanation:

 Decomposers are organisms that break down dead or decaying organisms, and in doing so they carry out the natural process of decomposition. Protists with saprophytic mode of nutrition are called decomposers.

The variable modes of life styles in protista are similar to

  1. plants

  2. animals

  3. fungi

  4. all of these


Correct Option: D
Explanation:

 The variable modes of life styles in protista are similar to plants, animals and fungi.

The phenomenon of creeping movements of an organism by contraction & expansion of the body is called

  1. epiboly

  2. metaboly

  3. hyperboly

  4. hypoboly


Correct Option: B
Explanation:

 Euglenoids are single cellular organisms with euglena like features. They have specific euglenoid movements which are creeping movements followed by contraction and expansion of the body known as metaboly.

The life cycle having gametic meiosis is called

  1. haplontic type

  2. diplontic type

  3. haplodiplontic type

  4. diplobiontic type


Correct Option: B
Explanation:

 A life cycle is a series of changes in form that an organism undergoes, returning to the starting state. There are 3 types of cycles:Haplontic life cycle — the haploid stage is multicellular and the diploid stage is a single cell, meiosis is "zygotic". Diplontic life cycle — the diploid stage is multicellular and haploid gametes are formed, meiosis is "gametic". Haplodiplontic life cycle (also referred to as diplohaplontic, diplobiontic, or dibiontic life cycle) — multicellular diploid and haploid stages occur, meiosis is "sporic".

Night Glow of the sea is caused by

  1. diatoms

  2. slimemoulds

  3. noctiluca

  4. sporozoa


Correct Option: C
Explanation:

 Night Glow of the sea is caused by Noctiluca scintillans, commonly known as the Sea Sparkle.

Which of the following is an example of a peritrichous protist?

  1. Euglena

  2. Paramecium

  3. Dictyostellium

  4. Gonylaux


Correct Option: B
Explanation:

 Peritrichous is having flagella (tail like projections) all over its surface. Paramecium is an example of a peritrichous protist.

The symbiont in the gut of termites is

  1. trichonympha

  2. vorticella

  3. gonyaulax

  4. paramecium


Correct Option: A
Explanation:

 Trichonympha is a genus of parabasalid protists that live in the intestines of many, if not most, termite species. They are symbiotes, in that they break down the cellulose in the wood and plant fibers their hosts eat.

Sun animalcules are also called

  1. radiolarians

  2. heliozones

  3. foraminiferans

  4. sporozoans


Correct Option: A
Explanation:

 Sun animalcules are also called radiolarians.

Which of the following is a protozoan protist with pseudopodia and a single flagellum?

  1. Pelomyxa

  2. Giant Amoeba

  3. Euglena

  4. Both 1 and 2


Correct Option: D
Explanation:

 Pelomyxa and Giant Amoeba are protozoan protist with pseudopodia and a single flagellum.

Sleeping sickness is caused by

  1. Trypanosoma

  2. Trichonympha

  3. Trichomonas

  4. Lophomonas


Correct Option: A
Explanation:

 Sleeping sickness is caused by two germs (protozoa), Trypanosoma brucei rhodesiense and Trypanosomoa brucei gambiense . The more severe form of the illness is caused by T. b. rhodesiense .

Undulating membrane is present in

  1. Entamoeba

  2. Amoeba

  3. Leishmania

  4. Trypanosoma


Correct Option: C
Explanation:

 Undulating membrane is present in Leishmania.

The fish used for biological control of malaria is

  1. Gambusia

  2. Labeo rohita

  3. Gold fish

  4. None of these


Correct Option: A
Explanation:

 Gambusia are also known as mosquitofish, which, however, refers more specifically to two species, G. affinis and G. holbrooki. These can be introduced into ponds to eat mosquito larvae and used for biological control of malaria.

The temporary anus of paramecium is also called

  1. cytopyge

  2. cytopharynx

  3. cyton

  4. all of these


Correct Option: A
Explanation:

 In paramecium, during the time of ingestion a minute aperture called cell anus called as cytopyge or cytoproct is visible.

Kala Azar Fever is caused by

  1. Trypanosoma

  2. Leishmania

  3. Plasmodium

  4. Gonyaulax


Correct Option: B
Explanation:

 Visceral leishmaniasis (VL), also known as kala-azar, black fever, and Dumdum fever, is the most severe form of leishmaniasis. Leishmaniasis is a disease caused by protozoan parasites of the Leishmania genus.

In women, Leucorrhoea disease is caused by

  1. Trichonympha

  2. Trichomonas

  3. Leishmania

  4. Entamoeba


Correct Option: B
Explanation:

 Leucorrhoea, also known as vaginal discharge is a very common condition that has been experienced by most women of all ages, at some time or the other. Leucorrhoea is cuased by trichomonads, a group of parasitic protozoan specifically Trichomonas vaginalis.

Which type of pseudopodia is found in Amoeba proteus?

  1. Reticulopodia

  2. Filopodia

  3. Axopodia

  4. Lobopodia


Correct Option: D
Explanation:

 Lobopodia may be flattened or cylindrical (tubular). Amoeba proteus is probably the best-known protist possessing lobopodia.

Micronucleus and meganucleus are present in which of the following?

  1. Noctiluca

  2. Plasmodium

  3. Giardia

  4. Paramecium


Correct Option: D
Explanation:

 Micronucleus and meganucleus are present in Paramecium.

The pigment in the eye spot of Euglena is called

  1. fucoxanthin

  2. paramylon

  3. xanthophyll

  4. astaxanthin


Correct Option: D
Explanation:

 The pigment in the eye spot of Euglena is called astaxanthin.

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