0

Principles of systematics & five kingdoms

Description: This test is based on 25 multiple choice questions on principles of systematics & five kingdom which are of great help for medical aspirants.
Number of Questions: 25
Created by:
Tags: bacteria viruses protozoans etc Kingdom- Fungi Classification of Fungi Algae Thallophyta Kingdom - Monera Classification of Prokaryotic Organisms
Attempted 0/25 Correct 0 Score 0

Which among the following protozoans occur as endoparasite on different animals?

  1. Zooflagellates

  2. Sarcodines

  3. Ciliates

  4. Sporozoans


Correct Option: D
Explanation:

These protozoans are present as endoparasites in different groups of animals. They does not posses any locomotory organs. Their body has a tough covering called cuticle and a single nucleus.

Which among the following are the spore like structures produced by the breaching up of hypha cells in fungi?

  1. Sporangiospores

  2. Chlamydospores

  3. Oidia

  4. Conidia


Correct Option: C
Explanation:

These are spores like structures produced by the breaching up of hypha cells. They do not store reserve food and hence cannot survive under unfavourable conditions. Such spores are produced in Rhizopus.

What is the mode of sexual reproduction in the fungi Phytophthora & Albugo?

  1. Planogametic copulation

  2. Gametangial contact

  3. Gametangial copulation

  4. Spermatization


Correct Option: B
Explanation:

In the process of gametangial contact, gamete carrying the structures called gametangia come closer to each other and develop a fertilisation tube through which the male gamete migrates into the female gametangium.Eg. Phytophthora & Albugo.

Which of the following is a colony forming fungi?

  1. Acremonium

  2. Aspergillus

  3. Cladosporium

  4. Fusarium


Correct Option: C
Explanation:

Cladosporium is a genus of fungi including some of the most common indoor and outdoor molds. They form olive-green to brown or black colonies, and have dark-pigmented conidia that are formed in simple or branching chains. 

Which of the following species of Rhizopus causes black stains and fruit drop in jackfruit ?

  1. Rhizopus arrhizus

  2. Rhizopus artocapri

  3. Rhizopus nigricans

  4. Rhizopus oryzae


Correct Option: B
Explanation:

It is a weak parasitic fungus. It causes black stains and fruit drop in jackfruit by deteriorating the stem, fruit rot and male flowers.

The antibiotic penicillin is obtained from

  1. Penicillium camemberti

  2. Penicillium bilaiae

  3. Penicillium chrysogenum

  4. Penicillium candidum


Correct Option: C
Explanation:

Penicillium chrysogenum is common in damp or water damaged buildings. It is the source of several β-lactam antibiotics. The most important antibiotic penicillin is obtained from it.

Which Tricoderma species is capable of secreting large amount of cellulolytic enzymes?

  1. Trichoderma viride

  2. Trichoderma reesei

  3. Trichoderma harzianum

  4. Trichoderma koningii


Correct Option: B
Explanation:

It is a mesophilic and filamentous fungus. It can secrete large amount of cellulolytic enzymes .

The fungi used to form a microbial rennet for curdling milk is

  1. Fusarium venenatum

  2. Geotrichum candidum

  3. Ustilago maydis

  4. Rhizomucor miehei


Correct Option: D
Explanation:

This fungus is commercially used to generate enzymes which can be used to form a microbial rennet to curd milk and produce cheese.

The leaf blight on carrot is caused by

  1. Alternaria triticina

  2. Alternaria solani

  3. Alternaria panax

  4. Alternaria carotiincultae


Correct Option: D
Explanation:

Alternaria carotiincultae is a plant pathogen & causes leaf blight on carrot.

Immunocompromised persons are more likely to be attacked by fungi

  1. Alternaria

  2. Stachybotrys

  3. Rhizopus

  4. Trichoderma


Correct Option: A
Explanation:

Alternaria are major plant pathogens & human allergens. They readily cause subtle infections in immunocompromised persons such as AIDS patients.

Which among the following are free-floating aquatic plants?

  1. Holoplankton

  2. Meroplankton

  3. Photosynthetic picoplankton

  4. Nanophytoplankton


Correct Option: D
Explanation:

They are free-floating, aquatic plants, e.g. algae, protists, and cyanobacteria.

The cell wall is made up of silica in

  1. diatoms

  2. radiolarians

  3. krill

  4. salp


Correct Option: A
Explanation:

These are a major group of algae. They are unicellular & producers within the food chain. They are encased within a unique cell wall made of silica called a frustule.

Among the following, which algae is significant in biotechnology?

  1. Botryococcus

  2. Chlorella

  3. Dunaliella

  4. Gracilaria


Correct Option: A
Explanation:

It is a green, pyramid shaped planktonic algae.  It is highly significant in biotechnology.

The term 'antibiotic' was coined by

  1. Selman A. Waksman

  2. Paul Ehrlich

  3. Alexander Fleming

  4. Sir James Frazer Stirling


Correct Option: A
Explanation:

The term antibiotic was coined by a renowned microbiologist Selman A. Waksman. He tested about 10,000 types of soil bacteria for antibiotic capability. In 1943, Waksman discovered a fungus that produced a powerful antibiotic substance, which he called streptomycin.

The algae commonly known as sea grape is

  1. Meristotheca papulosa

  2. Colpomenia peregrina

  3. Caulerpa racemosa

  4. Ulva lactuca


Correct Option: C
Explanation:

It is a green alga. It is commonly known as sea grape. It is a common seaweed.

Which among the following edible algae is not used in Japanese cuisines?

  1. Laver

  2. Kombu

  3. Hijiki

  4. Arame


Correct Option: A
Explanation:

It is an edible algae. It is a common seaweed having a high mineral salt content, especially iodine and iron. It is used particularly in Korean cuisines.

The accessory pigment phycobilin is a characteristic feature of

  1. chlorophyta

  2. euglenophyta

  3. phaeophyta

  4. rhodophyta


Correct Option: D
Explanation:

This phylum of the kingdom protista contains photosynthetic organisms commonly known as red algae. Members of this division have a peculiar clear red colour imparted by accessory pigments called phycobilins. They are multicellular and are characterized by a great deal of branching.

Which algae is used in cosmetics and biofuel production?

  1. Nitella flexilis

  2. Codium fragile

  3. Neochloris oleoabundans

  4. Pandorina


Correct Option: C
Explanation:

It is a microalga. It has high lipid content so it has been regarded as a most suitable candidate organism for cosmetics and biofuel production.

Which algae is inedible to most herbivores?

  1. Caulerpa lentillifera

  2. Caulerpa taxifolia

  3. Codium tomentosum

  4. Halimeda


Correct Option: D
Explanation:

Halimeda is a green macroalgae. Its thallus is composed of calcified green segments. Calcium carbonate is deposited in its tissues, making it inedible to most herbivores.

The bacteria giving positive test for the enzyme catalase is

  1. Vibrio

  2. Bacillus

  3. Spirillum

  4. Spirochaeta


Correct Option: B
Explanation:

It is a Gram-positive, rod-shaped bacteria. It can be obligate aerobes or facultative anaerobes, and test positive for the enzyme catalase.

Which among the following structures is used as a food reserve for the bacterial cell?

  1. S-layer

  2. Flagella

  3. Slime layer

  4. Fimbrae


Correct Option: C
Explanation:

It helps in attachment of bacteria to other cells or azoic surfaces to form biofilms. It can also be used as a food reserve for the cell.

The omnipresent algae is

  1. Parietochloris incisa

  2. Ostreococcus tauri

  3. Chara

  4. Prototheca wickerhamii


Correct Option: D
Explanation:

It is an omnipresent algae. It does not contain chlorophyll. It is mainly present in the environment and is a rare cause of infection in humans.

Which of the following structures provides the buoyancy to the bacterial cells?

  1. Gas vesicles

  2. Carboxysomes

  3. Magnetosomes

  4. Endospores


Correct Option: A
Explanation:

These are spindle-shaped structures present in planktonic bacteria. They provide buoyancy to these cells by decreasing their overall cell density.

The structures protecting bacteria from phagocytosis and desiccation is

  1. mesosome

  2. rIbosome

  3. pili

  4. capsule


Correct Option: D
Explanation:

These are impermeable structures. These structures protect bacteria from phagocytosis and desiccation.

The algae resembling the black carpet is

  1. staghorn algae

  2. black brush algae

  3. green spot algae

  4. green thread algae


Correct Option: B
Explanation:

This algae resembles small tufts of black hairs, or a black carpet. It usually forms on slow-growing plants such as Anubias, but it can also grow on gravel.

- Hide questions