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NEET Biology MCQ
Biological Classification Monera Protista Fungi Slime Moulds Viruses MCQ
Quiz 1
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Q.1
Which of the following option does not belong to Ascomycetes?
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a) They are saprophytic, coprophilous and parasitic.
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b) They include unicellular and multicellular forms.
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c) Their mycelium is coenocytic
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d) Aspergillus, Claviceps, Neurospora belong to this class.
Explanation
Commonly known as sac-fungi, the ascomycetes are mostly multicellular, e.g., Penicillium, or rarely unicellular, e.g., yeast (Saccharomyces). They are saprophytic, decomposers, parasitic or coprophilous (growing on dung). Mycelium is branched and septate. The asexual spores are conidia produced exogenously on the special mycelium called conidiophores Some examples are Aspergillus Claviceps and Neurospora. Answer:(c)
Q.2
Select the wrong statement : [NEET 2018]
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a) Pseudopodia are locomotory and feeding structures in Sporozoans.
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b) Mushrooms belong to Basidiomycetes.
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c) Cell wall is present in members of Fungi and Plantae.
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d) Mitochondria are the powerhouse of the cell in all kingdoms except Monera.
Explanation
Pseudopodia are locomotory structures in sarcodines (Amoeboid). Answer:(a)
Q.3
Oxygen is not produced during photosynthesis by .. [ NEET 2018]
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a) Cycas
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b) Nostoc
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c) Green sulphur bacteria
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d) Chara
Explanation
Green sulphur bacteria perform photosynthesis using sulfide, hydrogen or organic substrates. Therefore, photosynthesis by these bacteria does not involve oxygen. Answer:(c)
Q.4
Ciliates differ from all other protozoans in [NEET 2018]
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a) using pseudopodia for capturing prey
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b) having a contractile vacuole for removing excess water
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c) using flagella for locomotion
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d) having two types of nuclei
Explanation
Cilia are identical in structure to flagella but are typically shorter and are found in much larger numbers than flagella are. All ciliates have cilia which they use for swimming, crawling, feeding, and touching. They feed on bacteria, algae, and other small food particles. Answer:(d)
Q.5
Chemosynthetic and anoxygenic photosynthesis are common in the following kingdom:
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a) Monera
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b) Protista
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c) Fungi
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d) Plantae
Explanation
Answer:(a)
Q.6
Which among the following description is wrong about chrysophytes?
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a) Diatoms are the chief producers of the ocean
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b) Silicified cell wall of diatoms is called frustale
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c) They appear yellow, green, brown, blue or red depending upon the pigment present in their cells
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d) Their cell wall forms two thin overlapping shells which fit together as in a soap box.
Explanation
Answer:(c)
Q.7
Septate mycelium and dikaryon formation is common in the following class/classes of fungi:
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a) Phycomycetes and Ascomycetes
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b) Ascomycetes and Basidiomycetes
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c) Phycomycetes, Ascomycetes and Basidiomycetes
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d) Deuteromycetes only.
Explanation
Answer:(b)
Q.8
Which is the smallest plant virus?
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a) Tobacco necrosis virus
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b) Satellite tobacco necrosis virus
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c) Tobacco mosaic virus.
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d) Potato mosaic virus.
Explanation
Answer:(b)
Q.9
iatoms and golden algae belong to:
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a) Chrysophytes.
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b) Dinoflagellates.
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c) Euglenoids
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d) Protozoans
Explanation
Answer:(a)
Q.10
The powerful hallucinogen LSD is obtained from a fungus:
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a) Aspergillus niger
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b) Claviceps purpurea.
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c) Neurospora
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d) Penicillium chrysogenum.
Explanation
Answer:(b)
Q.11
elect the correct combination of the statements (a-d) regarding the characteristics of certain organisms: (a) Methanogens are Archaebacteria which produce methane in marshy areas. ( b) Nostoc is a filamentous blue - green alga which fixes atmospheric nitrogen. (c) Chemosynthetic autotrophic bacteria synthesise cellulose from glucose. (d) Mycoplasma lacks a cell wall and can survive without oxygen.
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a) b and c
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b) a, b, c
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c) b, c, d
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d) a, b, d.
Explanation
Answer:(d)
Q.12
Match the following:
Column I
Column II
Column III
a) Ascomycetes
(i) Trichoderma
p) Aplanospores
b) Phycomycetes
(ii) Neurospora
q) No sexual spores
c) Deuteromycetes
(iii) Albugo
r) Conidiospores
d) Basidiomycetes
(iv) Amantia
s) Oospores
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a) a-(ii)-s, b-(i)-q, c-(iii)-p, d-(iv)-r.
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b) a-(ii)-p, b-(i)-q, c-(iii)-r, d-(iv)-s.
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c) a-(ii)-r, b-(iii)-p, c-(i)-r, d-(iv)-q
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d) a-(iii)-q, b-(i)-s, c-(ii)-r, d-(iv)-q
Explanation
Answer:(c)
Q.13
How many of the following fungi belong to the class Ascomycetes. Ustilago, Trichoderma, Aspergillus, Albugo, Saccharomyces, Mucor, Lycoperdon, Claviceps, Amantia, Neurospora, Penicillium.
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a) 4
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b) 5
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c) 6
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d) 7
Explanation
There are four major groups of fungi: Zygomycota, Ascomycota (sac fungi), Basidiomycota (club fungi), and Deuteromycota (fungi imperfecti). Ascomycotina are commonly known as the Sac Fungi, due to their sac-like appendage ... Aspergilli are filamentous fungi of the ascomycete class. Aspergillus- Ascomycetes Claviceps- Ascomycetes Saccharomyces- Ascomycetes Neurospora- Ascomycetes Penicilium- Ascomycetes Mucor- Phycomycetes Albugo- Phycomycetes Lycoperdon- Basidiomycetes Amantia- Basidiomycetes Ustilago - Basidiomycetes Trichoderma - Deuteromycetes Explanation provided by S. Gokhulavasan Answer:(c)
Q.14
Which among the following are protistan algae?
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a) Slime moulds and Ciliates
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b) Chrysophytes and Dinoflagellates
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c) Chrysophytes and Slime moulds
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d) Euglenoids and Ciliates
Explanation
Answer:(b)
Q.15
Choose the correct match:
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a) Zoospores – Endogenous – Sexual spores.
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b) Conidiospores – Endogenous – Asexual spores.
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c) Ascospores – Endogenous – Sexual spores.
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d) Basidiospores – Exogenous – Asexual spores.
Explanation
Answer:(c)
Q.16
Obligate parasitic fungi on plants are seen in:
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a) Phycomycetes.
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b) Ascomycetes
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c) Basidiomycetes.
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d) Deuteromycetes.
Explanation
Answer:(a)
Q.17
Trichodesmium erythreum causes red sea, but red tide is caused by some members of dinoflagellates, it also causes paralytic shell fish poisoning due to a toxin called Saxitoxin. The member is: `
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a) Vorticella
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b) Ceratium
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c) Noctiluca
0%
d) Gonyaulux
Explanation
Answer:(d)
Q.18
Hook shaped outgrowth or clamp connections are used for proper distribution of dikaryon at the time of cell division. It is found in which group of fungi:
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a) Basidiomycetes
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b) Ascomycetes
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c) Phycomycetes
0%
d) Oomycetes
Explanation
Answer:(a)
Q.19
ow many organisms in the list given below contain the fruiting body- Ascocarp? Saccharomyces, Agaricus, Pythium, Ustilago, Peziza, Neurospora, Erysiphae, Penicillium, Rhizopus, Claviceps.
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a) 5
0%
b) 6
0%
c) 7
0%
d) 8
Explanation
Answer:(b)
Q.20
Prions are composed largely of Prp-proteins, discovered by Stanley B Prusiner. The disease associated with Prions is/are:
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a) Kuru (Laughing disease).
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b) Madcow disease.
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c) Creutzfeldt – Jakob disease.
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d) All the above.
Explanation
Answer:(d)
Q.21
Moneran cell wall is mainly composed of:
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a) Polysaccharides and amino acids.
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b) Lipids and amino acids
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c) Polysaccharides and silica.
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d) Cellulose and silica.
Explanation
Answer:(a)
Q.22
Which among the following organisms in kingdom Monera completely lack a cell wall?
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a) Halophiles.
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b) Cyanobacteria.
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c) Mycoplasma.
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d) Euglenoids.
Explanation
Answer:(c)
Q.23
Organisms which contribute to the formation of diatomaceous earth belong to:
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a) Dinoflagellates
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b) Euglenoids.
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c) Slime moulds.
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d) Chrysophytes.
Explanation
Answer:(d)
Q.24
The members of this group are either free-living or parasitic. They have flagella. The parasitic forms cause diseases such as sleeping sickness. This description is that of:
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a) Ciliated protozoans.
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b) Flagellated protozoans
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c) Sporozoans.
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d) Euglenoids.
Explanation
Answer:(b)
Q.25
Choose the incorrect option:
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a) Mucor – Phycomycetes
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b) Alternaria – Deuteromycetes
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c) Aspergillus – Basidiomycetes
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d) Neurospora – Ascomycetes
Explanation
Answer:(c)
Q.26
Mesosomes in bacteria are considered equivalent to mitochondria. What is correct for mesosomes?
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a) They contain respiratory enzymes like cytochrome oxidase and dehydrogenase
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b) They are infoldings of cell membrane to increase surface area.
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c) They are attached to nucleoid to provide energy during binary fission and help in nucleoid separation and septa formation.
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d) All of the above.
Explanation
Answer:(d)
Q.27
Who demonstrated that the extract of the virus infected plants of tobacco could cause infection in healthy plants:
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a) D.J. Ivanowsky
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b) M.W. Beijerinek.
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c) W.M. Stanley
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d) Louis Pasteur
Explanation
Answer:(b)
Q.28
The protein coat of virus is known as:
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a) Capsid.
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b) Capsomeres.
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c) Nucleoid.
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d) Glycocalyx.
Explanation
Answer:(a)
Q.29
atch Column I with Column II.
Column I
Column II
a) Water mould
Saprolegnia
b) Spongy mushroom
Peziza
c) Cup fungus
Morchella
d) Puffball
Lycoperdon
e) Bracket fungi
Polypores
f) Budding fungus
Saccharomyces
g) Beard of old man
Usnea
h) Wonder drug
Penicillium
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a) a→1, b→2, c→3, d→4, e→5, f→6,g→7 h→8
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b) a→1, b→3, c→2, d→4, e→5, f→6,g→7 h→8
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c) a→1, b→3, c→2, d→5, e→4, f→7,g→6 h→8
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d) a→1, b→3, c→2, d→5, e→4, f→6,g→7 h→8
Explanation
Answer:(b)
Q.30
Red rot of sugarcane is caused by:
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a) Albugo candida
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b) Claviceps purpurea.
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c) Phytophthora infestans
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d) Colletotrichum falctum
Explanation
Answer:(d)
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