Biological Classification Chapter-Wise Test 13

Correct answer Carries: 4.

Wrong Answer Carries: -1.

How do slime moulds resemble both fungi and protozoa?

They photosynthesize like plants
They show amoeboid movement but form spores
They lack a cell membrane
They reproduce sexually like animals
2

Slime moulds exhibit amoeboid movement like protozoa but reproduce by forming spores like fungi.

Which of the following statements about prions is incorrect?

Prions are infectious proteins.
Prions contain both DNA and RNA.
Prions cause neurodegenerative diseases.
Prions lack a cellular structure.
2

Prions are infectious proteins that lack nucleic acids (DNA or RNA), making option 2 incorrect. They are unique in causing neurodegenerative diseases (option 3) by inducing misfolding of normal proteins. Prions are acellular (option 4) and consist solely of misfolded proteins (option 1).

Which of the following is a fungal disease caused by a member of Basidiomycetes?

Rust disease
Ergot disease
Ringworm
Powdery mildew
1

Rust disease, caused by Puccinia, belongs to the Basidiomycetes class of fungi.

Which of the following statements about protozoans is incorrect?

All protozoans are unicellular.
Protozoans show both autotrophic and heterotrophic modes of nutrition.
Protozoans reproduce only sexually.
Protozoans move using structures like flagella, cilia, or pseudopodia.
3

Protozoans can reproduce both asexually (by binary fission) and sexually.

Which of the following organisms is used in genetic and biochemical research?

Rhizopus
Neurospora
Aspergillus
Mucor
2

Neurospora is widely used in genetic and biochemical research due to its well-known life cycle and easy cultivation.

Which of the following organisms is an example of a ciliated protozoan?

Amoeba
Euglena
Plasmodium
Paramecium
4

Paramecium is a ciliated protozoan that uses cilia for movement and feeding.

Which of the following statements about cyanobacteria is incorrect?

Cyanobacteria perform oxygenic photosynthesis.
Cyanobacteria contain membrane-bound organelles.
Cyanobacteria are capable of nitrogen fixation.
Cyanobacteria are classified under Kingdom Monera.
2

Cyanobacteria are prokaryotic and lack membrane-bound organelles like mitochondria or the nucleus.

Which of the following statements about lichens is correct?

Lichens are formed by a symbiotic association of fungi and algae.
Lichens grow well in highly polluted environments.
Lichens cannot survive in extreme conditions.
Fungi in lichens perform photosynthesis.
1

Lichens are formed by a symbiotic association between fungi and algae, where algae perform photosynthesis.

Which of the following fungal classes includes yeast?

Phycomycetes
Ascomycetes
Basidiomycetes
Deuteromycetes
2

Yeast (Saccharomyces) belongs to the class Ascomycetes and reproduces by budding.

Which type of bacteria plays a crucial role in the nitrogen cycle by oxidizing ammonia to nitrites?

Cyanobacteria
Nitrosomonas
Rhizobium
Clostridium
2

Nitrosomonas is a nitrifying bacterium that converts ammonia into nitrites, playing a key role in the nitrogen cycle.

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