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Total MCQs Published:

8,265

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Biology MCQs

Biology MCQs

Hemoglobin is found in

– by 0

(a) All invertebrates
(b) Only in vertebrates
(c) Earthworm and rabbit
(d) Cockroach and earthworm

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In which of the following groups of animal the heart pumps only deoxygenated blood?

– by 0

(a) Fishes
(b) Reptile
(c) Birds
(d) Amphibians

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In a closed circulatory system, blood is completely enclosed within

– by 0

(a) The skeleton
(b) Sinuses
(c) Vessels
(d) Hearts

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Which one of the following blood vessels in mammals would normally carry the largest amount of urea?

– by 0

(a) Dorsal aorta
(b) Hepatic portal vein
(c) Renal artery
(d) Hepatic artery

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Which one of the following is responsible for guttation?

– by 0

(a) Root pressure
(b) Transpiration
(c) Photosynthesis
(d) Osmosis

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Watson and Crick composed the model of DNA structure in

– by 0

(a) 1953
(b) 1943
(c) 1955
(d) 1963

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Rh factor derives its name from

– by 0

(a) Monkey
(b) Ape
(c) Rhino
(d) Human care

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“Barr body” is derived from

– by 0

(a) Autosomes in males
(b) Autosomes in females
(c) X-chromosome in female
(d) X-chromosome in males

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Mutations used in agriculture are

– by 0

(a) Lethal and recessive
(b) Artificially induced and recessive
(c) Lethal and dominant
(d) None of the above

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Which of the following is a mutagen?

– by 0

(a) SO2
(b) CO2
(c) CO
(d) HNO2

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