M.C.Q (1 Marks)

MCQ 11 Mark

An important criterion for modern day classification is:

A
Resemblances in Morphology.
✓
Anatomical and physiological traits.
C
Breeding habits.
D
Presence or absence of notochord.

Answer

Correct option: B.

Anatomical and physiological traits.

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MCQ 21 Mark

Which of the following is an indicator of air pollution?

A
Mycorrhiza.
B
Agaricus.
✓
Lichens.
D
Common mushrooms.

Answer

Correct option: C.

Lichens.

Lichens are the indicators of air pollution. Lichens are the association between fungi and algae. They do not grow in polluted areas.

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MCQ 31 Mark

Viruses are non$-$cellular organisms but replicate themselves once they infect the host cell. To which of the following kingdom do viruses belong to?

A
Monera.
B
Protista.
C
Fungi.
✓
None of the above.

Answer

Correct option: D.

None of the above.

Since viruses are considered as borderline case between living and non$-$living things; no kingdom has been specified for them.

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MCQ 41 Mark

Reverse transcriptase is:

A
$\text{RNA}$ dependent $\text{RNA}$ polymerase.
B
$\text{DNA}$ dependent $\text{RNA}$ polymerase.
C
$\text{DNA}$ dependent $\text{DNA}$ polymerase.
✓
$\text{RNA}$ dependent $\text{DNA}$ polymerase.

Answer

Correct option: D.

$\text{RNA}$ dependent $\text{DNA}$ polymerase.

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MCQ 51 Mark

Which amongst kingdom animalia has become recently extinct?

A
Snow leopard.
B
Indian macaque.
✓
Cheetah.
D
Tiger.

Answer

Correct option: C.

Cheetah.

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MCQ 61 Mark

Potato spindle tuber disease is caused by:

A
Phycobionts.
B
Virus.
C
Bacteria.
✓
Viroids.

Answer

Correct option: D.

Viroids.

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MCQ 71 Mark

Rhizopus belongs to:

✓
Zygomycetes
B
Basidiomycetes
C
Ascomycetes
D
Deuteromycetes

Answer

Correct option: A.

Zygomycetes

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MCQ 81 Mark

Most of the lichens consist of:

A
Blue$-$green algae and Basidomycetes.
✓
Blue$-$green algae and Ascomycetes.
C
Red algae and Ascomycetes.
D
Brown algae and Phycomycetes.

Answer

Correct option: B.

Blue$-$green algae and Ascomycetes.

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MCQ 91 Mark

In prokaryotes, the genetic material is:

✓
Linear $\text{DNA}$ without histones.
B
Circular $\text{DNA}$ with histones.
C
Circular $\text{DNA}$ without histones.
D
Linear $\text{DNA}$ with histones.

Answer

Correct option: A.

Linear $\text{DNA}$ without histones.

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MCQ 101 Mark

Which of the following is used in biochemical and genetic work?

A
Claviceps.
B
Aspergillus.
✓
Neurospora.
D
Mucor.

Answer

Correct option: C.

Neurospora.

Neurospora is used in biochemical and genetic work, it belongs to class Ascomycetes.

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MCQ 111 Mark

Which is the correct word for relationship between algae and fungi in lichens?

A
Parasitism.
✓
Symbiosis.
C
Commensals.
D
Pathogens.

Answer

Correct option: B.

Symbiosis.

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MCQ 121 Mark

A dikaryon is formed when.

A
Meiosis is arrested.
B
The two haploid cells do not fuse immediately.
C
Cytoplasm does not fuse.
✓
None of the above.

Answer

Correct option: D.

None of the above.

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MCQ 131 Mark

All eukaryotic unicellular organisms belong to:

A
Monera.
B
Protista.
✓
Fungi.
D
Bacteria.

Answer

Correct option: C.

Fungi.

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MCQ 141 Mark

Absorptive heterotrophic nutrition is exhibited by:

A
Algae
✓
Fungi.
C
Bryophytes.
D
Pteridophytes.

Answer

Correct option: B.

Fungi.

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MCQ 151 Mark

What is true about Trypanosoma?

✓
Polymorphic.
B
Monogenetic.
C
Facultative parasite.
D
Non$-$pathogenic.

Answer

Correct option: A.

Polymorphic.

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MCQ 161 Mark

Bacteria that live in hot springs are called:

A
Halophiles.
✓
Thermoacidophiles.
C
Methanogens.
D
None of the above.

Answer

Correct option: B.

Thermoacidophiles.

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MCQ 171 Mark

Which one of the following character was not used by $R.H.$ Whittaker for biological classification?

✓
Physiological characters.
B
Thallus organisation.
C
Phylogenetic relationships.
D
Cell structure.

Answer

Correct option: A.

Physiological characters.

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MCQ 181 Mark

Nuclear dimorphism is shown by:

A
Plasmodium.
✓
Paramecium.
C
Amoeba.
D
Trypanosoma.

Answer

Correct option: B.

Paramecium.

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MCQ 191 Mark

Which one of the following micro$-$organisms is used for production of citric acid in industries?

A
Penicillium citrinum.
✓
Aspergillus niger.
C
Rhizopus nigricans.
D
Lactobacillus bulgaricus.

Answer

Correct option: B.

Aspergillus niger.

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MCQ 201 Mark

Which of the following is true for viruses?

A
They invariably contain $\text{DNA}$.
✓
They multiply only inside the host cell.
C
They occur only inside bacteria.
D
Their genetic material is $\text{RNA}$.

Answer

Correct option: B.

They multiply only inside the host cell.

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MCQ 211 Mark

Genetic information in Paramecium is contained in:

✓
Micronucleus.
B
Macronucleus.
C
Both $(a)\ \& \ (b).$
D
Mitochondria.

Answer

Correct option: A.

Micronucleus.

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MCQ 221 Mark

Taxonomy without phylogeny is similar to bones without flesh” is the statement of:

A
Oswald Tippo.
B
John Hutchinson.
✓
Takhtajan.
D
Bentham and Hooker.

Answer

Correct option: C.

Takhtajan.

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MCQ 231 Mark

Phylogenetic classification is based on:

A
Utilitarian system.
B
Habits.
C
Overall similarities.
✓
Common evolutionary descent.

Answer

Correct option: D.

Common evolutionary descent.

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MCQ 241 Mark

A non$-$photosynthetic aerobic nitrogen fixing soil bacterium is:

A
Rhizobium.
B
Clostridium.
✓
Azotobacter.
D
Klebsiella.

Answer

Correct option: C.

Azotobacter.

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MCQ 251 Mark

Plant decomposers are:

✓
Monera and Fungi.
B
Fungi and Plants.
C
Protista and Animalia.
D
Animalia and Monera .

Answer

Correct option: A.

Monera and Fungi.

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MCQ 261 Mark

A spore producing plant is $.........$

A
Rose
✓
Bread mould
C
Potato
D
Ginger

Answer

Correct option: B.

Bread mould

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MCQ 271 Mark

If two or more species occupy overlapping areas, they are:

A
Sibling.
B
Allochronic.
C
Keystone.
✓
Sympatric.

Answer

Correct option: D.

Sympatric.

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MCQ 281 Mark

Match the columns:
Basidiomycetes $– A$. Agaricus.
Ascomycetes $– B$. Albugo.
Phycomycetes $– C$. Trichoderma.
Deuteromycetes $– D$. Saccharomyces.

A
$\text{1-D, 2-A, 3-B, 4-C.}$
✓
$\text{1-A, 2-D, 3-B, 4-C.}$
C
$\text{1-A, 2-B, 3-D, 4-C.}$
D
$\text{1-C, 2-D, 3-A, 4-B.}$

Answer

Correct option: B.

$\text{1-A, 2-D, 3-B, 4-C.}$

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MCQ 291 Mark

Cauliflower mosaic virus contains:

A
$\text{ssRNA.}$
B
$\text{dsRNA.}$
✓
$\text{dsDNA}$.
D
$\text{dsDNA.}$

Answer

Correct option: C.

$\text{dsDNA}$.

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MCQ 301 Mark

A taxon is:

A
A group of related families.
B
A group of related species.
C
A type of living organisms.
✓
A taxonomic group of any ranking.

Answer

Correct option: D.

A taxonomic group of any ranking.

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MCQ 311 Mark

Organisms living in salty areas are called as.

A
Methanogens.
✓
Halophiles.
C
Heliophytes.
D
Thermoacidophiles.

Answer

Correct option: B.

Halophiles.

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MCQ 321 Mark

Associations between Mycobiont and Phycobiont are found in.

A
Mycorrhiza.
B
Root.
✓
Lichens.
D
$\text{BGA}.$

Answer

Correct option: C.

Lichens.

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MCQ 331 Mark

Proteins of capsomeres are made up of:

A
Nucleic acids
B
Carbohydrates
C
Fats
✓
Amino acids

Answer

Correct option: D.

Amino acids

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MCQ 341 Mark

Binomial Nomenclature was given by:

A
Aristotle.
✓
Linnaeus.
C
John Ray.
D
Huxley.

Answer

Correct option: B.

Linnaeus.

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MCQ 351 Mark

African sleeping sickness is due to:

A
Plasmodium vivax transmitted by tse$-$tse fly.
B
Trypanosoma lewsii transmitted by bed bug.
✓
Trypanosoma gambiense transmitted by Glossina palpalis.
D
Entamoeba gingivalis spread by house fly.

Answer

Correct option: C.

Trypanosoma gambiense transmitted by Glossina palpalis.

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MCQ 361 Mark

Which of the following is not correctly matched?

A
Late blight of potato $-$ Phytophthora infestans.
✓
Covered smut of barley $-$ Ustilago nuda.
C
Root knot disease $-$ Meloidogyne javanica.
D
Smut of bajra $-$ Tolysporium penicillariae

Answer

Correct option: B.

Covered smut of barley $-$ Ustilago nuda.

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MCQ 371 Mark

In bacterial chromosomes, the nucleic acid polymers are:

A
Linear $\text{DNA}$ molecule.
✓
Circular $\text{DNA}$ molecule.
C
Of two types$\text{-DNA}$ and $\text{RNA}$.
D
Linear $\text{RNA}$ molecule.

Answer

Correct option: B.

Circular $\text{DNA}$ molecule.

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MCQ 381 Mark

A system of classification in which a large number of traits are considered, is:

A
Artificial system.
B
Synthetic system.
✓
Natural system.
D
Phylogenetic system.

Answer

Correct option: C.

Natural system.

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MCQ 391 Mark

Choose the correct pair.

A
Parasitic fungi $–$ feeds on plants and animals.
B
Saprotrophic fungi $–$ feeds on dead and decaying organic matter.
C
Symbiotic fungi $–$ mycorrhiza.
✓
All of the above are true.

Answer

Correct option: D.

All of the above are true.

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MCQ 401 Mark

Influenza virus has:

A
$\text{DNA}.$
✓
$\text{RNA}.$
C
Both $(a)$ and $(b).$
D
Only proteins and no nucleic acids.

Answer

Correct option: B.

$\text{RNA}.$

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MCQ 411 Mark

Rickettsiae constitute a group under:

✓
Bacteria.
B
Viruses.
C
Independent group between bacteria and viruses.
D
Fungi.

Answer

Correct option: A.

Bacteria.

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MCQ 421 Mark

Tobacco mosaic virus is a tubular filament of size:

A
$700 \times 30\ nm.$
B
$300 \times 10\ nm.$
C
$300 \times 5\ nm.$
✓
$300 \times 18\ nm.$

Answer

Correct option: D.

$300 \times 18\ nm.$

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MCQ 431 Mark

On the basis of attack of host, viruses are classified into:

A
Two types
✓
Three types
C
Four types
D
Five types

Answer

Correct option: B.

Three types

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MCQ 441 Mark

The five kingdom classification was proposed by.

✓
$R.H.$ Whittaker.
B
$C.$Linnaeus.
C
$A.$ Roxberg.
D
Virchow.

Answer

Correct option: A.

$R.H.$ Whittaker.

$R. H$. Whittaker proposed five kingdom classification in $1959$. Monera, Protista, Fungi, Plantae and Animalia are the five kingdoms according to $R. H$. Whittaker.

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MCQ 451 Mark

Adhesive pad of fungi penetrates the host with the help of:

✓
Mechanical pressure and enzymes.
B
Hooks and suckers.
C
Softening by enzymes.
D
Only by mechanical pressure.

Answer

Correct option: A.

Mechanical pressure and enzymes.

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MCQ 461 Mark

During the formation of bread it becomes porous due to release of $CO_2$ by the action of:

✓
Yeast.
B
Bacteria.
C
Virus.
D
Protozoans.

Answer

Correct option: A.

Yeast.

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MCQ 471 Mark

Members of phycomycetes are found in.

Aquatic habitats.
On decaying wood.
Moist and damp places.
As obligate parasites on plants.

Choose from the following options.

A
None of the above.
B
$i$ and $iv$
C
$ii$ and $iii$
✓
All of the above.

Answer

Correct option: D.

All of the above.

Phycomycetes is the group of fungi which is characterized by aseptate and coenocytic mycelium. They can live in a wide variety of habitat. They can be aquatic or saprotrophic or parasitic or could be living in moist and damp places. Some examples of phycomycetes are Rhizopns $($black bread mould$)$, Mucor $($dung mould$)$, Albugo $($parasitic fungi$)$.

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MCQ 481 Mark

The closely related morphologically similar sympatric populations, but reproductively isolated, are designated as:

A
Clines.
B
Demes.
C
Demes.
✓
Sibling species.

Answer

Correct option: D.

Sibling species.

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MCQ 491 Mark

Ustilago caused plant diseases are called smuts because:

A
They parasitise cereals.
B
Mycelium is black.
✓
They develop sooty masses of spores.
D
Affected parts become completely black.

Answer

Correct option: C.

They develop sooty masses of spores.

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MCQ 501 Mark

Yeast$-$Saccharomyces cerevisiae is used in the industrial production of:

A
Citric acid.
B
Tetracycline.
✓
Ethanol.
D
Butanol.

Answer

Correct option: C.

Ethanol.

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BIOLOGY M.C.Q (1 Marks)

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