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Question (1)

QN0026486

A botanist discovers a plant with true roots, stems and leaves but no seeds. It reproduces by spores and requires water for fertilisation. To which group does it belong?

(A) Bryophyta
(B) Pteridophyta
(C) Gymnosperm
(D) Angiosperm

Correct Answer: B

Explanation:

Presence of vascular tissues, spore reproduction and dependence on water indicate that the plant belongs to Pteridophyta.

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Question (2)

QN0026487

A species of bird is found naturally only in the Western Ghats and nowhere else in the world. Such a species is called:

(A) Migratory species
(B) Invasive species
(C) Endemic species
(D) Exotic species

Correct Answer: C

Explanation:

Species restricted to a particular geographical region are called endemic species.

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Question (3)

QN0026488

A student collected an organism from a pond. It is unicellular, possesses a true nucleus and can photosynthesise. Under Whittaker's system, it should be placed in:

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

Correct Answer: B

Explanation:

Unicellular organisms with a true nucleus are classified under Protista.

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Question (4)

QN0026489

Which feature would best help a scientist distinguish bacteria from Amoeba?

(A) Habitat
(B) Locomotion
(C) Presence of a membrane-bound nucleus
(D) Size

Correct Answer: C

Explanation:

Amoeba possesses a membrane-bound nucleus, whereas bacteria do not.

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Question (5)

QN0026490

Four organisms are listed below: P – Moss, Q – Fern, R – Pine, S – Mango. Which sequence correctly represents increasing adaptation to life on land?

(A) P → Q → R → S
(B) Q → P → R → S
(C) P → R → Q → S
(D) Q → R → P → S

Correct Answer: A

Explanation:

Adaptation to terrestrial life increased from bryophytes to pteridophytes, gymnosperms and angiosperms.

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Question (6)

QN0026491

A farmer grows two crop varieties, one drought-resistant and another pest-resistant. Maintaining both varieties mainly helps in:

(A) Reducing biodiversity
(B) Increasing food insecurity
(C) Reducing risk of crop failure
(D) Eliminating pollinators

Correct Answer: C

Explanation:

Maintaining biodiversity reduces the risk of crop failure and improves food security.

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Question (7)

QN0026492

A scientist discovers a multicellular organism with chitinous cell walls and absorptive nutrition. It should be classified under:

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

Correct Answer: D

Explanation:

Chitinous cell walls and absorptive heterotrophic nutrition are characteristic features of fungi.

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Question (8)

QN0026493

Which pair of organisms would most likely have the closest evolutionary relationship?

(A) Tiger and Lion
(B) Tiger and Mango
(C) Tiger and Earthworm
(D) Lion and Fern

Correct Answer: A

Explanation:

Tiger and lion belong to the same genus, Panthera, indicating close evolutionary relationship.

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Question (9)

QN0026494

An organism possesses a backbone, gills during early life and lungs in adulthood. It belongs to:

(A) Fish
(B) Reptilia
(C) Amphibia
(D) Mammalia

Correct Answer: C

Explanation:

Amphibians have gills during larval stages and lungs in adult stages.

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Question (10)

QN0026495

If all fungi disappeared from forests, the most immediate consequence would be:

(A) Increased decomposition
(B) Accumulation of dead organic matter
(C) Increase in soil fertility
(D) Increase in oxygen production

Correct Answer: B

Explanation:

Fungi are important decomposers; without them dead organic matter would accumulate.

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Question (1)

A botanist discovers a plant with true roots, stems and leaves but no seeds. It reproduces by spores and requires water for fertilisation. To which group does it belong?

Explanation:

Link:

Question (2)

A species of bird is found naturally only in the Western Ghats and nowhere else in the world. Such a species is called:

Explanation:

Link:

Question (3)

A student collected an organism from a pond. It is unicellular, possesses a true nucleus and can photosynthesise. Under Whittaker's system, it should be placed in:

Explanation:

Link:

Question (4)

Which feature would best help a scientist distinguish bacteria from Amoeba?

Explanation:

Link:

Question (5)

Four organisms are listed below: P – Moss, Q – Fern, R – Pine, S – Mango. Which sequence correctly represents increasing adaptation to life on land?

Explanation:

Link:

Question (6)

A farmer grows two crop varieties, one drought-resistant and another pest-resistant. Maintaining both varieties mainly helps in:

Explanation:

Link:

Question (7)

A scientist discovers a multicellular organism with chitinous cell walls and absorptive nutrition. It should be classified under:

Explanation:

Link:

Question (8)

Which pair of organisms would most likely have the closest evolutionary relationship?

Explanation:

Link:

Question (9)

An organism possesses a backbone, gills during early life and lungs in adulthood. It belongs to:

Explanation:

Link:

Question (10)

If all fungi disappeared from forests, the most immediate consequence would be:

Explanation:

Link:

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