Biological Classification
Test 4

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following is an example of a eukaryotic unicellular organism?

Nostoc
Amoeba
Rhizobium
Mycoplasma
2

Amoeba is a unicellular eukaryotic organism belonging to Kingdom Protista.

What is the main mode of reproduction in bacteria under favorable conditions?

Binary fission
Conjugation
Budding
Spore formation
1

Bacteria primarily reproduce through binary fission, a rapid asexual mode of reproduction under favorable conditions.

Which of the following statements about viruses is incorrect?

Viruses can be crystallized.
Viruses require a host cell to replicate.
Viruses contain ribosomes for protein synthesis.
Viruses are acellular structures.
3

Viruses lack ribosomes and depend on the host's cellular machinery for protein synthesis.

Which of the following statements about viruses is correct?

Viruses are acellular organisms.
Viruses can reproduce independently.
Viruses possess both DNA and RNA in the same particle.
Viruses have their own ribosomes for protein synthesis.
1

Viruses are acellular entities that require a host cell for replication and lack independent metabolism.

Which of the following statements about Kingdom Monera is incorrect?

Monerans include both autotrophic and heterotrophic organisms.
Monerans have membrane-bound organelles.
Monerans reproduce primarily by binary fission.
Monerans include cyanobacteria and bacteria.
2

Monerans lack membrane-bound organelles since they are prokaryotic organisms.

Which characteristic is unique to fungi compared to plants?

Presence of chlorophyll
Heterotrophic mode of nutrition
Cell wall made of cellulose
Production of seeds
2

Unlike plants, fungi lack chlorophyll and obtain nutrients through heterotrophic absorption.

Which of the following is an example of a saprophytic bacterium?

Lactobacillus
Rhizobium
Plasmodium
Trypanosoma
1

Lactobacillus is a saprophytic bacterium involved in curd formation from milk.

Which of the following is a characteristic feature of Kingdom Protista?

Multicellular body organization
Presence of a true nucleus
Lack of membrane-bound organelles
Prokaryotic nature
2

Protists are unicellular eukaryotic organisms that have a well-defined nucleus and membrane-bound organelles.

Which of the following adaptations help cyanobacteria to survive in aquatic environments?

Heterocysts for nitrogen fixation
Formation of cilia for movement
Multicellular body organization
Chloroplasts for photosynthesis
1

Cyanobacteria possess heterocysts, specialized cells that help fix nitrogen in aquatic environments.

Which of the following organisms exhibits both autotrophic and heterotrophic modes of nutrition?

Euglena
Spirogyra
Rhizopus
Paramecium
1

Euglena can perform photosynthesis in the presence of light but switches to heterotrophic nutrition in the absence of light.

Performance Summary

Score:

Category Details
Total Attempts:
Total Skipped:
Total Wrong Answers:
Total Correct Answers:
Time Taken:
Average Time Taken per Question:
Accuracy:
0