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Question (11)

QN005568

Which stage is most likely to be found floating and repeatedly coming to water surface for air?

(A) Egg
(B) Larva
(C) Pupa
(D) Adult

Correct Answer: B

Explanation:

Larva respires at water surface

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Question (12)

QN005569

A mosquito egg develops into larva in 2 days and larva into pupa in 3 days. Total time before pupa stage is:

(A) 3 days
(B) 4 days
(C) 5 days
(D) 6 days

Correct Answer: C

Explanation:

2 + 3 = 5 days

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Question (13)

QN005570

If eggs hatch on Day 1 and larvae appear on Day 3, what is egg stage duration?

(A) 1 day
(B) 2 days
(C) 3 days
(D) 4 days

Correct Answer: B

Explanation:

3 − 1 = 2 days

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Question (14)

QN005571

Which stage of mosquito is most different in structure from adult?

(A) Egg
(B) Larva
(C) All are similar
(D)

Correct Answer: B

Explanation:

Larva looks completely different from adult

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Question (15)

QN005572

If 100 eggs are laid and only 60 become larvae, what is the percentage survival to larva stage?

(A) 40%
(B) 50%
(C) 60%
(D) 70%

Correct Answer: C

Explanation:

(60/100) × 100 = 60%

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Question (16)

QN005573

What is the correct sequence of frog life cycle stages?

(A) Tadpole → Egg → Frog → Froglet
(B) Egg → Tadpole → Froglet → Adult frog
(C) Egg → Froglet → Tadpole → Adult
(D) Adult → Egg → Tadpole → Froglet

Correct Answer: B

Explanation:

Egg → tadpole → froglet → adult

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Question (17)

QN005574

Which stage of frog is called spawn?

(A) Tadpole
(B) Egg mass
(C) Froglet
(D) Adult

Correct Answer: B

Explanation:

Spawn is cluster of frog eggs

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Question (18)

QN005575

How many major stages are there in frog life cycle?

(A) 2
(B) 3
(C) 4
(D) 5

Correct Answer: C

Explanation:

Egg, tadpole, froglet, adult

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Question (19)

QN005576

A tadpole develops legs in 9 weeks and becomes froglet in 12 weeks. How many weeks does metamorphosis take?

(A) 2 weeks
(B) 3 weeks
(C) 4 weeks
(D) 5 weeks

Correct Answer: B

Explanation:

12 − 9 = 3 weeks

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Question (20)

QN005577

If frog eggs hatch in 4 days, what is duration of embryo stage approximately?

(A) 1–2 days
(B) 3–4 days
(C) 5–6 days
(D) 7–8 days

Correct Answer: B

Explanation:

Embryo stage lasts about 3–4 days

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Question (11)

Which stage is most likely to be found floating and repeatedly coming to water surface for air?

Explanation:

Link:

Question (12)

A mosquito egg develops into larva in 2 days and larva into pupa in 3 days. Total time before pupa stage is:

Explanation:

Link:

Question (13)

If eggs hatch on Day 1 and larvae appear on Day 3, what is egg stage duration?

Explanation:

Link:

Question (14)

Which stage of mosquito is most different in structure from adult?

Explanation:

Link:

Question (15)

If 100 eggs are laid and only 60 become larvae, what is the percentage survival to larva stage?

Explanation:

Link:

Question (16)

What is the correct sequence of frog life cycle stages?

Explanation:

Link:

Question (17)

Which stage of frog is called spawn?

Explanation:

Link:

Question (18)

How many major stages are there in frog life cycle?

Explanation:

Link:

Question (19)

A tadpole develops legs in 9 weeks and becomes froglet in 12 weeks. How many weeks does metamorphosis take?

Explanation:

Link:

Question (20)

If frog eggs hatch in 4 days, what is duration of embryo stage approximately?

Explanation:

Link:

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