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Question (11)

QN0031438

A student compares the life cycles of a bean plant and a mosquito. Which statement is common to both?

(A) Both begin as eggs.
(B) Both pass through different stages before becoming adults.
(C) Both live only in water during the early stages.
(D) Both have larval and pupal stages.

Correct Answer: B

Explanation:

Both plants and animals undergo a series of developmental stages during their life cycles, although the stages are different.

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Question (12)

QN0031439

A gardener sows bean seeds in moist soil inside a dark room. The seeds germinate but later the seedlings become weak. Which is the best explanation?

(A) Darkness prevents germination.
(B) Seeds require sunlight for germination.
(C) Sunlight is needed after germination for healthy growth.
(D) Water is harmful after germination.

Correct Answer: C

Explanation:

Bean seeds can germinate without light, but seedlings require sunlight for proper growth.

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Question (13)

QN0031440

A student observes tiny water droplets on the edges of grass leaves early in the morning. This observation provides evidence that plants

(A) reproduce
(B) excrete excess water
(C) breathe only at night
(D) absorb minerals from air

Correct Answer: B

Explanation:

Plants remove excess water through their leaves, showing the characteristic of excretion.

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Question (14)

QN0031441

Which of the following observations best proves that a plant is a living organism?

(A) It is fixed at one place.
(B) It grows, responds to stimuli and reproduces.
(C) It has green leaves only.
(D) It remains in the soil throughout its life.

Correct Answer: B

Explanation:

Growth, response to stimuli and reproduction are essential characteristics of living beings.

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Question (15)

QN0031442

A science student records the following observations during an experiment: Pot A: No germination Pot B: No germination Pot C: Germination Pot D: Germination Which conclusion is most appropriate?

(A) Sunlight is essential for bean seed germination.
(B) Air and proper moisture are essential for bean seed germination.
(C) Excess water speeds up germination.
(D) Dry soil improves germination.

Correct Answer: B

Explanation:

Bean seeds germinate when they receive sufficient air and the right amount of water.

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Question (16)

QN0031443

A mosquito larva repeatedly comes to the surface of stagnant water. What is the most likely reason?

(A) To search for food floating on water.
(B) To escape sunlight.
(C) To obtain air for respiration.
(D) To lay eggs.

Correct Answer: C

Explanation:

Mosquito larvae live in water but breathe atmospheric air by coming to the water surface.

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Question (17)

QN0031444

During a nature walk, a student notices a young frog with four legs and a small tail. Which stage of the frog's life cycle is being observed?

(A) Spawn
(B) Tadpole
(C) Froglet
(D) Adult frog

Correct Answer: C

Explanation:

A froglet has developed legs but still retains a small tail, which disappears later.

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Question (18)

QN0031445

Which of the following observations would NOT support the conclusion that an object is living?

(A) It grows in size with time.
(B) It produces young ones of its own kind.
(C) It moves only when someone pushes it.
(D) It responds when touched.

Correct Answer: C

Explanation:

Movement caused by an external force is not a characteristic of living beings.

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Question (19)

QN0031446

A student wants to prevent grains stored at home from germinating during the rainy season. Which condition should be ensured?

(A) Keep the grains moist.
(B) Store the grains in a dry place with very little moisture.
(C) Expose the grains to heavy rain.
(D) Soak the grains in water before storage.

Correct Answer: B

Explanation:

Seeds require water for germination. Keeping grains dry prevents unwanted germination.

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Question (20)

QN0031447

A teacher asks students to identify the only set in which all members are living.

(A) Mushroom, bean seed, frog, mango tree
(B) Wooden log, mushroom, frog, mosquito
(C) Bean seed, bicycle, frog, plant
(D) Mosquito larva, pencil, bean plant, frog

Correct Answer: A

Explanation:

A bean seed is a living structure in a dormant state. The other three are also living organisms, whereas a wooden log, bicycle and pencil are non-living.

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Question (11)

A student compares the life cycles of a bean plant and a mosquito. Which statement is common to both?

Explanation:

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Question (12)

A gardener sows bean seeds in moist soil inside a dark room. The seeds germinate but later the seedlings become weak. Which is the best explanation?

Explanation:

Link:

Question (13)

A student observes tiny water droplets on the edges of grass leaves early in the morning. This observation provides evidence that plants

Explanation:

Link:

Question (14)

Which of the following observations best proves that a plant is a living organism?

Explanation:

Link:

Question (15)

A science student records the following observations during an experiment: Pot A: No germination Pot B: No germination Pot C: Germination Pot D: Germination Which conclusion is most appropriate?

Explanation:

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Question (16)

A mosquito larva repeatedly comes to the surface of stagnant water. What is the most likely reason?

Explanation:

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Question (17)

During a nature walk, a student notices a young frog with four legs and a small tail. Which stage of the frog's life cycle is being observed?

Explanation:

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Question (18)

Which of the following observations would NOT support the conclusion that an object is living?

Explanation:

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Question (19)

A student wants to prevent grains stored at home from germinating during the rainy season. Which condition should be ensured?

Explanation:

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Question (20)

A teacher asks students to identify the only set in which all members are living.

Explanation:

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