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Question (41)

QN008389

Which three domains were proposed by Carl Woese?

(A) Plantae, Animalia, Fungi
(B) Bacteria, Archaea, Eukarya
(C) Monera, Protista, Animalia
(D) Fungi, Plantae, Protista

Correct Answer: B

Explanation:

Carl Woese proposed Bacteria, Archaea and Eukarya.

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Question (42)

QN008390

Which observation best supports the idea that biodiversity evolved gradually?

(A) All organisms have identical structures
(B) Fossils show progression from simpler to complex forms
(C) All organisms appeared simultaneously
(D) Organisms never changed habitats

Correct Answer: B

Explanation:

Fossil records show gradual changes over time.

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Question (43)

QN008391

Why is the Purple Frog scientifically important?

(A) It represents an ancient amphibian lineage
(B) It is a flowering plant
(C) It lacks genetic material
(D) It is a marine organism

Correct Answer: A

Explanation:

The Purple Frog belongs to an ancient amphibian group.

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Question (44)

QN008392

The species name sahyadrensis in the Purple Frog indicates

(A) Food habit
(B) Habitat temperature
(C) Place of discovery
(D) Body symmetry

Correct Answer: C

Explanation:

Species names may indicate place of discovery.

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Question (45)

QN008393

Which ecological consequence may occur if one species disappears from an ecosystem?

(A) Ecosystem becomes stronger immediately
(B) Dependent species may also decline
(C) Biodiversity automatically increases
(D) Climate remains unchanged

Correct Answer: B

Explanation:

Species are interconnected in ecosystems.

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Question (46)

QN008394

Which human activity directly threatens biodiversity evolution and survival?

(A) Conservation of forests
(B) Pollution and deforestation
(C) Wildlife protection
(D) Habitat restoration

Correct Answer: B

Explanation:

Pollution and habitat destruction reduce biodiversity.

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Question (47)

QN008395

Why do mangrove forests reduce cyclone damage?

(A) They increase pollution
(B) Their biodiversity acts as a protective barrier
(C) They eliminate rainfall
(D) They prevent tides completely

Correct Answer: B

Explanation:

Mangroves protect coastal areas from cyclone impacts.

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Question (48)

QN008396

Which feature would best help classify a newly discovered pond organism as Protista?

(A) Absence of nucleus
(B) Presence of true nucleus and locomotory structures
(C) Presence of flowers
(D) Multicellular body without tissues

Correct Answer: B

Explanation:

Protists are unicellular eukaryotes with locomotory structures.

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Question (49)

QN008397

Which evolutionary advancement allowed better prey capture in cnidarians?

(A) Tentacles with specialised cells
(B) Absence of tissues
(C) Presence of spores
(D) Lack of movement

Correct Answer: A

Explanation:

Tentacles helped cnidarians capture prey actively.

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Question (50)

QN008398

Which conclusion best summarises the evolution of biodiversity?

(A) Diversity developed randomly without structural change
(B) Structural and functional adaptations produced survival advantages over time
(C) All organisms evolved from vertebrates directly
(D) Biodiversity depends only on climate

Correct Answer: B

Explanation:

Biodiversity evolved through gradual adaptations and structural changes.

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Question (41)

Which three domains were proposed by Carl Woese?

Explanation:

Link:

Question (42)

Which observation best supports the idea that biodiversity evolved gradually?

Explanation:

Link:

Question (43)

Why is the Purple Frog scientifically important?

Explanation:

Link:

Question (44)

The species name sahyadrensis in the Purple Frog indicates

Explanation:

Link:

Question (45)

Which ecological consequence may occur if one species disappears from an ecosystem?

Explanation:

Link:

Question (46)

Which human activity directly threatens biodiversity evolution and survival?

Explanation:

Link:

Question (47)

Why do mangrove forests reduce cyclone damage?

Explanation:

Link:

Question (48)

Which feature would best help classify a newly discovered pond organism as Protista?

Explanation:

Link:

Question (49)

Which evolutionary advancement allowed better prey capture in cnidarians?

Explanation:

Link:

Question (50)

Which conclusion best summarises the evolution of biodiversity?

Explanation:

Link:

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