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NEET • BIOLOGY • BIOLOGICAL CLASSIFICATION

Biological classification practice · Hard

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Showing 1-30 of 64 questions

1 Hard

1 of 64

Understanding +4 | -1

In some viruses, RNA is present instead of DNA indicating that.

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Correct option: D

RNA can transfer heredity material.

Option D (RNA can transfer heredity material) is correct because the presence of RNA instead of DNA in some viruses demonstrates that RNA can function as the genetic material and carry hereditary information.

2 Hard

2 of 64

Analyzing +4 | -1

Choose the correct statements related of binary
fission of Paramecium?

(i) During favorable conditions Paramecium
stops feeding after attaining its maximum
growth

(ii) At first the micronucleus divides by
amitosis and the macronucleus divides into
two daughter nuclei by mitosis

(iii) The proter receives the anterior contractile
vacuole, cytopharynx and cytostome from
its parent individuals

(iv) Before karyokinesis a transverse constriction
appears in the middle of the body

View answer and explanation

Correct option: C

Except (ii) and (iv) all are correct

Option C is correct because statements (i) and (iii) are correct regarding binary fission in Paramecium, while (ii) and (iv) are incorrect.

3 Hard

3 of 64

Remembering +4 | -1

Which is a fungal disease?

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Correct option: A

Athlete’s foot

Option A (Athlete’s foot) is correct because athlete's foot is a common fungal infection of the skin.

4 Hard

4 of 64

Understanding +4 | -1

Read the following statements about protists and state how many of them are true.

(i) Euglenoids have a carbohydrate rich layer called pellicle.

(ii) Slime molds are saprophytic fungi.

(iii) Dinoflagellates are mostly found in fresh water and are photosynthetic.

(iv) Spores of slime molds are dispersed by water.

View answer and explanation

Correct option: D

Zero

Option D (Zero) is correct because all four statements contain inaccuracies regarding the characteristics of protists.

5 Hard

5 of 64

Understanding +4 | -1

Assertion: Escherichia coli, Shigella sp. And Salmonella sp. are all responsible for diarrhoeal diseases.
Reason: Dehydration is common to all types of diarrhoeal diseases. In this disease adequate supply of fluids and electrolytes should be ensured.

View answer and explanation

Correct option: B

If both assertion and reason are correct but reason is not a correct explanation of the assertion.

Option B (If both assertion and reason are correct but reason is not a correct explanation of the assertion) is correct because both statements are true, but dehydration being common doesn't explain why those specific bacteria cause diarrhea.

6 Hard

6 of 64

Remembering +4 | -1

Fertile layer of gills in agaricus is known as?

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Correct option: A

Hymeinum

Option A (Hymeinum) is correct because the hymenium is the fertile layer of gills in Agaricus where basidia and basidiospores are produced.

7 Hard

7 of 64

Understanding +4 | -1

Consider the following statements I. All prokaryotic organism were grouped together under kingdom-Monera II. The unicellular eukaryotic organism were placed in kingdom-Protista III. Chlorella and Chlamydomonas, both were having cell walls IV. Paramecium and Amoeba lack cell walls V. Kingdom-Protista has brought together Chlamydomona,Chlorella with Paramecium and Amoeba Which of the statements give above are correct?

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Correct option: D

I, II III, IV and V

Option D (I, II III, IV and V) is correct because all statements accurately describe the characteristics and classification within Monera and Protista.

8 Hard

8 of 64

Remembering +4 | -1

Bacteria differ from plants in that they do not have

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Correct option: D

A well define nucleus

Option D (A well define nucleus) is correct because bacteria are prokaryotes and lack a membrane-bound nucleus.

9 Hard

9 of 64

Remembering +4 | -1

An eukaryote, which causes disease comes under

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Correct option: B

Fungus

Option B (Fungus) is correct because fungi are eukaryotes and can cause diseases in plants and animals.

10 Hard

10 of 64

Understanding +4 | -1

Read the statements given below. Which of these is wrong?

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Correct option: A

Sporangiospores borne in the sporangium of Rhizopus are diploid structures

Option A (Sporangiospores borne in the sporangium of Rhizopus are diploid structures) is correct because sporangiospores in Rhizopus are haploid, not diploid.

11 Hard

11 of 64

Remembering +4 | -1

Which of the following does not secrete toxins during storage conditions of crop plants?

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Correct option: D

Colletotrichum

Option D (Colletotrichum) is correct because while Aspergillus, Penicillium, and Fusarium are known to produce mycotoxins during storage, Colletotrichum is less commonly associated with toxin production in stored crops.

12 Hard

12 of 64

Understanding +4 | -1

Which of the following statement about Mycoplasma is true:

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Correct option: B

They differ from viruses in being cellular in organisation

Option B is correct because Mycoplasma are cellular organisms, unlike viruses which are acellular.

13 Hard

13 of 64

Remembering +4 | -1

The slime moulds are characterized by the presence of

View answer and explanation

Correct option: C

Capillitium

The correct answer is C (Capillitium) because capillitium are thread-like structures found within the spore-bearing structures of slime molds, aiding in spore dispersal.

14 Hard

14 of 64

Understanding +4 | -1

A eukaryote, without a cellulosic cell wall, presence of multicellular/loose tissue body organization showing heterotrophic (saprophytic/parasitic) nutrition is

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Correct option: C

Mycota

Option C (Mycota) is correct because Mycota (fungi) are eukaryotes without cellulosic cell walls, exhibit multicellular organization, and are heterotrophic.

15 Hard

15 of 64

Understanding +4 | -1

Select the false statement

View answer and explanation

Correct option: D

Phycomycetes are called club fungi because of a club-shaped end of mycelium known as basidium

Option D is the false statement. Phycomycetes are not called club fungi; Basidiomycetes are.

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16 Hard

16 of 64

Understanding +4 | -1

Consider the following statements correct with respect to characteristic features of the kingdom

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Correct option: D

In Plantae the cell wall is present

Option D (In Plantae the cell wall is present) is correct because plants have cell walls made of cellulose.

17 Hard

17 of 64

Understanding +4 | -1

Identify the incorrect one for neurospora

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Correct option: A

It has coenocytic mycelia

Option A (It has coenocytic mycelia) is correct because Neurospora has septate mycelia, not coenocytic (aseptate) mycelia.

18 Hard

18 of 64

Remembering +4 | -1

The protein coat of virus is called?

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Correct option: C

Capsid

Option C (Capsid) is correct because the protein coat of a virus is called the capsid.

19 Hard

19 of 64

Remembering +4 | -1

Pasteurization is

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Correct option: B

Heating of liquid between 65°C to 80°C followed by rapid cooling

Option B (Heating of liquid between 65°C to 80°C followed by rapid cooling) is correct because pasteurization involves heating a liquid to a specific temperature range and then rapidly cooling it to kill harmful microorganisms.

20 Hard

20 of 64

Understanding +4 | -1

In addition to absence of chlorophyll, what is the other difference between fungi and higher plants?

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Correct option: A

Type of nutrition and composition of cell wall

Option A (Type of nutrition and composition of cell wall) is correct because fungi are heterotrophic and have chitinous cell walls, unlike higher plants.

21 Hard

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Analyzing +4 | -1

Which option shows incorrectly matched group?

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Correct option: C

Zoospores - Aspergillus - Sporulation

Zoospores are motile spores, and while Aspergillus does reproduce asexually, it primarily uses conidia, not zoospores.

22 Hard

22 of 64

Understanding +4 | -1

Among plants ‘pheromones’ are secreted by the cells of the following plants for given function

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Correct option: B

Yeast for facilitating mating

Option B (Yeast for facilitating mating) is correct because pheromones in yeast are involved in sexual reproduction by facilitating mating between cells.

23 Hard

23 of 64

Understanding +4 | -1

Which of the following is correct for dinoflagellates?

(a) Stiff hemicellulosic plates on the inner surface of cell wall

(b) Presence of flagella

(c) Produce diatomite

(d) Releases toxins

(e) Photosynthetic pigments are found

View answer and explanation

Correct option: A

(b), (d) & (e)

Option A is correct because dinoflagellates are characterized by the presence of flagella, release of toxins, and photosynthetic pigments.

24 Hard

24 of 64

Understanding +4 | -1

I. Commonly known as sac-fungi
II. Mycelium is branched and septate
III. Conidiophore produces conidia exogenously in chain
IV. The fructifications are edible and considered delicacies
V. Neurospora crassa is often employed in studies conducted in experimental genetics
The above statements are assigned to

View answer and explanation

Correct option: A

Ascomycetes

Option A (Ascomycetes) is correct because the statements describe characteristics of Ascomycetes (sac-fungi).

25 Hard

25 of 64

Remembering +4 | -1

During unfavourable conditions, slime mould forms …A… which are …B… and survive for many years
Identify A and B to complete the given statement

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Correct option: D

A-spores; B-highly resistant

The correct answer is D (A-spores; B-highly resistant) because during unfavorable conditions, slime molds form spores that are highly resistant and can survive for many years.

26 Hard

26 of 64

Remembering +4 | -1

Mycorrhiza are mutualistic and have symbiotic associations between

View answer and explanation

Correct option: C

Fungi and roots of higher plants

Option C (Fungi and roots of higher plants) is correct because mycorrhizae are mutualistic symbiotic associations between fungi and the roots of vascular plants.

27 Hard

27 of 64

Remembering +4 | -1

Which of the following kingdoms have no well defined boundaries?

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Correct option: B

Protista

Option B (Protista) is correct because the kingdom Protista is a diverse group with organisms that do not always fit neatly into other kingdoms, leading to poorly defined boundaries.

28 Hard

28 of 64

Understanding +4 | -1

The ratio of number of Prokaryotes and Eukaryotes in Kingdom of Whittaker classification

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Correct option: A

0.044444444

Option A (0.044444444) is correct because there is 1 prokaryotic kingdom (Monera) and 4 eukaryotic kingdoms (Protista, Fungi, Plantae, Animalia) in Whittaker's classification, giving a ratio of 1/45 = 0.044444444.

29 Hard

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Understanding +4 | -1

Assertion: Archaebacteria are more similar to eukaryotes rather than eubacteria.

Reason: Archaean genome is more similar to eukaryotic genome rather than bacterial genome.

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Correct option: A

If both assertion and reason are true and reason is the correct explanation of assertion

Option A is correct because Archaebacteria share more similarities with eukaryotes in terms of genome structure and organization compared to eubacteria, justifying both the assertion and the reason.

30 Hard

30 of 64

Remembering +4 | -1

Association between mycobiont and phycobiont are found in?

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Correct option: C

Lichens

Option C (Lichens) is correct because lichens are formed by the association between mycobiont and phycobiont.

Revision notes and key takeaways

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Key Takeaways

✓ This set contains 64 single-correct-answer MCQs on BIOLOGICAL CLASSIFICATION.
✓ Try each question before opening its answer. Read the explanation where one is available.
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