NEET Biology Biological Classification MCQs Set 19

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Access the complete set of multiple-choice questions for Biological Classification below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official NEET textbooks.

Multiple Choice Questions

Question 1: Flagellation in Euglena is
(a) Uniflagellation and stichonematic
(b) Isokont and whiplash type
(c) Heterokont and whiplash type
(d) Heterokont and stichonematic
Show Answer & Explanation

Answer: (d) Heterokont and stichonematic

Explanation:
1. Flagellation in Englena . Flagella two but different size (Heterokont) . One side mastigoneus.

Question 2: Special type of red pigment present in the eye-spot of Euglena and Crustacea is called
(a) Phycoerythrin
(b) Astaxanthin
(c) Carotene
(d) Xanthophyll
Show Answer & Explanation

Answer: (b) Astaxanthin

Explanation:
1. Eye spot of Euglena and Crustacea – Red pigment.

Question 3: The structure formed in the life cycle of cellular slime-mould due to chemotactic movement is
(a) Pseudoplasmodium
(b) Swarm cells
(c) Macrocyst
(d) Capillitia
Show Answer & Explanation

Answer: (a) Pseudoplasmodium

Explanation:
1. Cellular slime mould Somatic Phase Pseudoplasmodium (Primitive multicellular fungi or advanced protist) ⇓.

Question 4: Find the correct match<br />Column I Column II<br />a. Gill fungi (i) Salmon disease<br />b. Cup fungi (ii) Trama<br />c. Black mould (iii) Penicillin<br />d. Blue / green mould (iv) Zygophore<br />(v) Apothecium
(a) a(ii), b(iii), c(i), d(v)
(b) a(ii), b(v), c(iv), d(i)
(c) a(ii), b(v), c(iv), d(iii)
(d) a(ii), b(iii), c(i), d(iv)
Show Answer & Explanation

Answer: (c) a(ii), b(v), c(iv), d(iii)

Explanation:
1. Gill fungi – Trama (central part) Cup fungi – Apothecium (Peziza & Ascobolus) Black mould – Zygophore Blue/Green mould – Penicillin.

Question 5: Fungi differs from bacteria in
(a) Mode of nutrition
(b) Having NAG in cell wall
(c) Flagella structure
(d) Reserve food material as glycogen
Show Answer & Explanation

Answer: (c) Flagella structure

Explanation:
1. Fungi differs from bacteria in flagella structure.

Question 6: The famous Irish famine is related to a disease of potato known as
(a) Late blight of potato
(b) Early blight of potato
(c) Dry rot of potato
(d) Potato scab
Show Answer & Explanation

Answer: (a) Late blight of potato

Explanation:
1. Irish famine – Late blight of potato.

Question 7: A dolipore septum is a characteristic feature of
(a) Phycomycetes
(b) Ascomycetes
(c) Basidiomycetes
(d) Zygomycetes
Show Answer & Explanation

Answer: (c) Basidiomycetes

Explanation:
1. Dolipore septum occurs in – Basidiomycetes.

Question 8: Which one of the following combination of characters is correct for the given fungal group?
(a) Algal fungi : Coenocytic, cellulosic wall, zoospore, zygospore, dikaryophase present
(b) Conjugating : Septate mycelium, chitinous cell wall, sporangiospore, shorter (n + n) phase
(c) Sac fungi : Septate mycelium, Ascogonium, Crozier stage, meiospores as ascospores, shorter dikaryophase
(d) Club fungi : Shorter primary mycelium stage, No sex organs, dominant dikaryophase, zygosporic meiosis
Show Answer & Explanation

Answer: (c) Sac fungi : Septate mycelium, Ascogonium, Crozier stage, meiospores as ascospores, shorter dikaryophase

Explanation:
1. Sac fungi . Septate mycellium . Ascogonium . Crozier stage.

Question 9: Find set of edible basidiocarps.
(a) Agaricus, Pleurotus
(b) Agaricus, Morchella
(c) Volvariella, Tuber
(d) Amanita, Morchella
Show Answer & Explanation

Answer: (a) Agaricus, Pleurotus

Explanation:
1. Basidiocarps Ascocarp Agaricus Morchella Edible Pleurotus Edible Tuber Volvariella Amanita Non-edible.

Question 10: Read the statements carefully<br />a. Hartig net is the network of intracellular mycelium of Boletus<br />b. Ectomycorrhiza forms ten percent of total mycorrhiza<br />c. Fungal partner of endomycorrhiza belongs to zygomycetes or phycomycetes
(a) Only a & c are correct
(b) Only b & c are correct
(c) Only c is correct
(d) All are correct
Show Answer & Explanation

Answer: (b) Only b & c are correct

Explanation:
1. Harting net is the network of intercellular mycorrhiza in Boletus, Amnita or mainly basidiomycetes.

Question 11: Symptom not seen in plants due to viruses is
(a) Mosaic formation
(b) Leaf rolling and curling
(c) Yellowing, vein clearing
(d) Root knot
Show Answer & Explanation

Answer: (d) Root knot

Explanation:
1. Viral symptoms in plants . Mosaic formation . Leaf rolling and curling . Yellowing, vein clearing.

Question 12: Viruses possess all the following properties, except
(a) They are non-cellular organisms
(b) Possess both DNA and RNA
(c) Capsid protects nucleic acid
(d) Have inert crystalline structure outside living cells
Show Answer & Explanation

Answer: (b) Possess both DNA and RNA

Explanation:
1. Viruses posses either DNA or RNA.

Question 13: Read the following statements carefully and identify correct statements w.r.t. Lichens<br />a. The association cannot tolerate air pollution, especially due to sulphur dioxide<br />b. Lichens are annuals and their growth is slow<br />c. The fungal partner mostly belongs to ascomycetes.<br />d. Soredia are most efficient means of asexual reproduction<br />e. Orchids seldom occur without this association f. Foliose lichens are pioneers of succession in a water body.
(a) c, d, f
(b) a, c, d, f
(c) a, b, e
(d) a, c, d
Show Answer & Explanation

Answer: (d) a, c, d

Explanation:
1. Lichens are perennial and their growth is slow.

Question 14: Viroids differ from viruses in having :
(a) DNA molecules with protein coat
(b) DNA molecules without protein coat
(c) RNA molecules with protein coat
(d) RNA molecules without protein coat
Show Answer & Explanation

Answer: (d) RNA molecules without protein coat

Explanation:
1. Viroids are sub-viral agents as infectious RNA particles, without protein coat.

Question 15: Which of the following are found in extreme saline conditions?
(a) Archaebacteria
(b) Eubacteria
(c) Cyanobacteria
(d) Mycobacteria
Show Answer & Explanation

Answer: (a) Archaebacteria

Explanation:
1. Archaebacteria are able to survive in harsh conditions because of branched lipid chain in cell membrane which reduces fluidity of cell membrane.
2. Halophiles are exclusively found in saline habitats.

Question 16: Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?
(a) Bacillus
(b) Pseudomonas
(c) Mycoplasma
(d) Nostoc
Show Answer & Explanation

Answer: (c) Mycoplasma

Explanation:
1. Mycoplasmas are smallest, wall-less prokaryotes, pleomorphic in nature.
2. These are pathogenic on both plants and animals.

Question 17: Methanogens belong to
(a) Eubacteria
(b) Archaebacteria
(c) Dinoflagellates
(d) Slime moulds
Show Answer & Explanation

Answer: (b) Archaebacteria

Explanation:
1. Methanogens, halophiles and thermoacidophiles are archaebacteria.

Question 18: Select the wrong statement.
(a) The walls of diatoms are easily destructible
(b) 'Diatomaceous earth' is formed by the cell walls of diatoms
(c) Diatoms are chief producers in the oceans
(d) Diatoms are microscopic and float passively in water
Show Answer & Explanation

Answer: (a) The walls of diatoms are easily destructible

Explanation:
1. The cell walls of diatoms are embedded with silica and thus the walls are indestructible.

Question 19: Select the wrong statement
(a) Bacterial cell wall is made up of peptidoglycan
(b) Pili and fimbriae are mainly involved in motility of bacterial cells
(c) Cyanobacteria lack flagellated cells
(d) Mycoplasma is a wall-less microorganism
Show Answer & Explanation

Answer: (b) Pili and fimbriae are mainly involved in motility of bacterial cells

Explanation:
1. Pili and fimbriae are surface structures of the bacteria that do not play a role in motility.

Question 20: Which of the following statements is wrong for viroids?
(a) Their RNA is of high molecular weight
(b) They lack a protein coat
(c) They are smaller than viruses
(d) They causes infections
Show Answer & Explanation

Answer: (a) Their RNA is of high molecular weight

Explanation:
1. Viroids have RNA of low molecular weight.

Question 21: Choose the wrong statement
(a) Yeast is unicellular and useful in fermentation
(b) Penicillium is multicellular and produces antibiotics
(c) Neurospora is used in the study of biochemical genetics
(d) Morels and truffles are poisonous mushrooms
Show Answer & Explanation

Answer: (d) Morels and truffles are poisonous mushrooms

Explanation:
1. Morels and truffles are edible fungi belong to class ascomycetes.

Question 22: In which group of organisms the cell walls form two thin overlapping shells which fit together?
(a) Slime moulds
(b) Chrysophytes
(c) Euglenoids
(d) Dinoflagellates
Show Answer & Explanation

Answer: (b) Chrysophytes

Explanation:
1. Chrysophytes are photosynthetic protists.
2. They have overlapping cell wall like soap box.

Question 23: Choose the wrong statement
(a) Mosaic disease in tobacco and AIDS in human being are caused by viruses
(b) The viroids were discovered by D.I. Ivanowski
(c) W.M. Stanley showed that viruses could be crystallized
(d) The term Contagium vivum fluidum was coined by M.W. Beijerinek
Show Answer & Explanation

Answer: (b) The viroids were discovered by D.I. Ivanowski

Explanation:
1. The viroids were discovered by T.O. Diener.

Question 24: The imperfect fungi which are decomposers of litter and help in mineral cycling belong to:
(a) Ascomycetes
(b) Deuteromycetes
(c) Basidiomycetes
(d) Phycomycetes
Show Answer & Explanation

Answer: (b) Deuteromycetes

Explanation:
1. Deuteromycetes - Imperfect fungi which are decomposers of litter and help in mineral cycling.

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Practice MCQs for NEET Biology Biological Classification

About Biological Classification MCQs for NEET Biology

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