Biological Classification
Test 3

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which kingdom includes prokaryotic organisms?

Monera
Protista
Fungi
Plantae
1

Kingdom Monera consists of all prokaryotic organisms, including bacteria and archaebacteria.

Which of the following organisms lacks a cell wall?

Mycoplasma
Eubacteria
Fungi
Cyanobacteria
1

Mycoplasma completely lack a cell wall, making them different from bacteria, fungi, and cyanobacteria.

Which of the following is NOT a characteristic of Kingdom Plantae?

Presence of cell wall
Autotrophic mode of nutrition
Heterotrophic members
Chlorophyll-containing cells
3

Kingdom Plantae primarily includes autotrophic organisms, but some parasitic plants exist. However, they are exceptions and not a general characteristic.

Which of the following statements about viruses is incorrect?

Viruses contain both DNA and RNA as genetic material.
Viruses are obligate intracellular parasites.
Viruses cannot replicate outside a host cell.
Viruses lack a cellular structure.
1

Viruses contain either DNA or RNA, but never both, as their genetic material.

Which of the following statements about Kingdom Monera is incorrect?

Monerans are unicellular prokaryotic organisms.
Monerans include both autotrophic and heterotrophic members.
Monerans lack membrane-bound organelles.
Monerans reproduce only by sexual reproduction.
4

Monerans primarily reproduce asexually through binary fission, not sexual reproduction.

Which of the following best describes the structure of a virus?

A cellular organism with a nucleus
An acellular structure with a protein coat and nucleic acid
A prokaryotic cell with a cell wall
A multicellular organism with organelles
2

Viruses are acellular entities consisting of a protein coat (capsid) surrounding either DNA or RNA as their genetic material, but they lack cellular structures like a nucleus or organelles.

Which of the following statements about Kingdom Monera is incorrect?

Monerans are unicellular prokaryotic organisms.
Monerans contain membrane-bound organelles.
Monerans reproduce mainly through binary fission.
Monerans lack a well-defined nucleus.
2

Monerans are prokaryotic organisms and lack membrane-bound organelles such as mitochondria and the nucleus.

Which of the following groups includes organisms that can fix atmospheric nitrogen?

Fungi
Cyanobacteria
Dinoflagellates
Slime moulds
2

Cyanobacteria such as Nostoc and Anabaena can fix atmospheric nitrogen using specialized cells called heterocysts.

Which of the following fungi reproduces sexually through zygospores?

Rhizopus
Saccharomyces
Penicillium
Puccinia
1

Rhizopus, a member of Phycomycetes, reproduces sexually through zygospores.

Which of the following is a characteristic feature of prions?

They contain both DNA and RNA
They lack a nucleic acid genome
They infect only plants
They are surrounded by a lipid membrane
2

Prions are infectious protein particles that lack DNA or RNA, unlike viruses and viroids.

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