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Question (21)

QN008519

An organism is multicellular, absorbs nutrients from dead matter and does not photosynthesise. In the five-kingdom system, it belongs to

(A) Protista
(B) Plantae
(C) Fungi
(D) Animalia

Correct Answer: C

Explanation:

Fungi are heterotrophs that absorb nutrients from dead and decaying matter.

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Question (22)

QN008520

Which of the following best explains why classification systems changed over time?

(A) Organisms changed rapidly every century
(B) Scientists preferred shorter names
(C) New evidence and technologies improved understanding
(D) Old systems were illegal to use

Correct Answer: C

Explanation:

Scientific classifications evolve as new discoveries and technologies emerge.

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Question (23)

QN008521

Which technological advancement greatly influenced changes in biological classification?

(A) Telescope
(B) Microscope
(C) Steam engine
(D) Compass

Correct Answer: B

Explanation:

Microscopes revealed microorganisms and cellular differences.

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Question (24)

QN008522

A moving unicellular organism was initially thought to be animal-like. Which discovery would most strongly justify placing it in Protista instead of Animalia?

(A) Presence of tissues
(B) Presence of organs
(C) Unicellular eukaryotic organisation
(D) Presence of vertebral column

Correct Answer: C

Explanation:

Protists are unicellular eukaryotes.

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Question (25)

QN008523

The Rigveda and Brihat Samhita classified animals on the basis of

(A) DNA sequences
(B) habitat, behaviour and ecological roles
(C) cell structure
(D) chromosome number

Correct Answer: B

Explanation:

Ancient Indian texts grouped animals by habitat, behaviour and ecological roles.

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Question (26)

QN008524

Which ancient Indian contribution resembles Aristotle’s habitat-based grouping?

(A) Three-domain system
(B) Binomial nomenclature
(C) Classification of animals into terrestrial, aquatic and aerial groups
(D) Five-kingdom classification

Correct Answer: C

Explanation:

Animals were grouped as terrestrial, aquatic and aerial.

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Question (27)

QN008525

A scientist finds an organism that is unicellular, heterotrophic and lacks a true nucleus. It would be classified under

(A) Monera
(B) Protista
(C) Fungi
(D) Animalia

Correct Answer: A

Explanation:

Lack of a true nucleus indicates a prokaryote belonging to Monera.

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Question (28)

QN008526

Why was the two-kingdom system insufficient for classifying bacteria?

(A) Bacteria are multicellular
(B) Bacteria possess tissues
(C) It did not account for major cellular differences among unicellular organisms
(D) Bacteria are extinct organisms

Correct Answer: C

Explanation:

The system failed to distinguish prokaryotes from eukaryotes.

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Question (29)

QN008527

Which kingdom in Whittaker’s system contains organisms that obtain nutrients by absorption and often act as decomposers?

(A) Animalia
(B) Fungi
(C) Plantae
(D) Protista

Correct Answer: B

Explanation:

Fungi absorb nutrients and commonly function as decomposers.

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Question (30)

QN008528

Which scientist proposed the three-domain system based on genetic evidence?

(A) Robert Whittaker
(B) Aristotle
(C) Carl Woese
(D) Ernst Haeckel

Correct Answer: C

Explanation:

Carl Woese proposed the three-domain classification system.

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Question (21)

An organism is multicellular, absorbs nutrients from dead matter and does not photosynthesise. In the five-kingdom system, it belongs to

Explanation:

Link:

Question (22)

Which of the following best explains why classification systems changed over time?

Explanation:

Link:

Question (23)

Which technological advancement greatly influenced changes in biological classification?

Explanation:

Link:

Question (24)

A moving unicellular organism was initially thought to be animal-like. Which discovery would most strongly justify placing it in Protista instead of Animalia?

Explanation:

Link:

Question (25)

The Rigveda and Brihat Samhita classified animals on the basis of

Explanation:

Link:

Question (26)

Which ancient Indian contribution resembles Aristotle’s habitat-based grouping?

Explanation:

Link:

Question (27)

A scientist finds an organism that is unicellular, heterotrophic and lacks a true nucleus. It would be classified under

Explanation:

Link:

Question (28)

Why was the two-kingdom system insufficient for classifying bacteria?

Explanation:

Link:

Question (29)

Which kingdom in Whittaker’s system contains organisms that obtain nutrients by absorption and often act as decomposers?

Explanation:

Link:

Question (30)

Which scientist proposed the three-domain system based on genetic evidence?

Explanation:

Link:

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