Biology - Mock Test 292

Question 2911

Mutations used in agriculture are?

A) lethal and recessive B) artificially induced and recessive C) lethal and dominant D) none of the above

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Question 2912

Which of the following is an example of a point mutation?

A) Thalassaemia B) Night blindness C) Sickle cell anaemia D) Down‟s syndrome

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Question 2913

The plant that was made popular by “DE VRIES mutation theory”:?

A) Triticum vulgare B) Oenothera lamarkiana C) Pisum sativum D) Primula vulgaris

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Question 2914

Which of the following is a mutagen?

A) SO2 B) CO2 C) CO D) HNO2

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Question 2915

Which of the following is not heritable?

A) Point mutation B) Chromosomal mutation C) Somatic mutation D) Gene mutation

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Question 2916

Allosomes are?

A) bead like structure on chromosomes B) sex chromosomes C) rounded bodies D) node like structure on chromosomes

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Question 2917

Continuity of germplasm theory by WEISMANN was proposed in?

A) 1838 B) 1883 C) 1865 D) 1859

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Question 2918

Chromosome theory of heredity was postulated by?

A) Charles Darwin B) Gregor Mendel C) Sutton and Boveri D) Har Gobind Khorana

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Question 2919

The surface of nerve fibers bears narrow areas called?

A) Schwann cells B) Schwann nodes C) Nodes of Ranvier D) Nissl‟s granules

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Question 2920

Bombay duck and hilsa are examples of?

A) freshwater fish B) marine fish C) breeds of sheep D) breeds of ducks

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