Gentics and Evoloution MCQ question and answer with solution

41

Which one of the following is an example of vestigial organ in man?

A) Jaw apparatus B) Ear muscles C) Canine teeth D) Humerus

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Answer & Solution

Answer: Option B

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42

Crops usually take nitrogen from the soil in the form of

A) Nitrite and ammonia B) Nitrate and amino acid C) Nitric acid and ammonia D) Nitrate and ammonia

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Answer & Solution

Answer: Option D

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43

According to Darwin's theory of evolution, long necks in giraffes

A) arose because of constant attempt to reach leaves on tall trees, generation after generation B) do not give them any special advantage and is just an accident C) give them advantage in finding food, because of which those with long necks survive D) is a result of the special weather prevalent in African Savannah

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Answer & Solution

Answer: Option C

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44

In the history of plant tissue culture, the first tissue to be cultured as a callus came from hybrid

A) Wheat plant B) Tobacco plant C) Maize plant D) Rice plant

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Answer & Solution

Answer: Option B

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45

Fitness according to Darwin refers to

A) reproductive fitness B) physiological fitness C) spiritual fitness D) None of the above

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Answer & Solution

Answer: Option A

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46

The paper entitled "Nondisjunction as a Proof of Chromosome Theory of Heredity" was described by

A) Bridges in 1916 B) Crew in 1912 C) Tautum in 1947 D) Lederberg in 1947

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Answer & Solution

Answer: Option A

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47

The tendency towards the development of which of the following seems to be more stable?

A) Female buds B) Male buds C) Hermaphrodite buds D) Either A or C

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Answer & Solution

Answer: Option D

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48

According to Mendel's explanation, when two factors for alternative expression of a trait are brought together by fertilization,

A) Only the dominant trait expresses itself masking the expression of the recessive trait B) Only the recessive trait expresses itself masking the expression of the dominant trait C) Both the dominant trait and the recessive trait express themselves D) None of the above

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Answer & Solution

Answer: Option A

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49

The study of extinct animals is called

A) Herpetology B) Ornithology C) Geology D) Palaeontology

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Answer & Solution

Answer: Option D

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50

Which of the organs given below is/are homologous?
1. Flipper of a seal
2. Wing of a bat
3. Arm of a man
4. Wing of a moth
Which of the statements given above is/are correct?

A) 2, 3 and 4 B) 3 and 4 C) 1, 2 and 3 D) All of these

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Answer & Solution

Answer: Option C

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Gentics and Evoloution MCQ question and answer with solution | Biology Gk MCQs