biology MCQs – Page 64

Practise multiple-choice questions from biology for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

biology Mcqs
1261. What is hibernation and aestivation________?
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A. adaptation of animals to escape from predators

B. hermal adaptation shown by animals

C. wind adaptation shown by animals

D. none of the above

1262. The expected number of RBCs in a single drop, or microliter, of blood is _________ million in Women.
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A. 4.0 to 5.2 million

B. 4.5 to 6.2 million

C. 3.2 to 7.2 million

D. 3.4 to 6.8 million

1263. An adult human normally has______?
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A. >12 molar teeth

B. 6 molar teeth

C. 10 molar teeth

D. 8 molar teeth

1264. Circular disc shaped structure with a round hole is ___________ ?
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A. Horoid coat

B. Ciliary body

C. Iris

D. Pupil

1265. The structure of DNA was proposed by_________?
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A. Watson and Crick

B. William Harvey

C. Charles Darwin

D. Louis Pasture

1266. The term gene was first used by _______?
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A. Lemark

B. Cuvier

C. Johannsen

D. Mendel

1267. The enzyme which is secreted by salivary gland is?
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A. Pepsin

B. Ptyalin

C. Bile

D. Lactalase

1268. The Process of egg formation in the female is called ________?
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A. oogenesis

B. None of these

C. Oviduct

D. oocyte

1269. Who discovered glucose?
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A. Mandel

B. Emil Fischeraf

C. Emil Fischer

D. Anselme Payen

1270. Pus is formed by the dead _____________cells.
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A. Platelets

B. Hemoglobin

C. RBCs

D. White Blood Cells
1271. Tjio and Levans contribution is very significant because they __________ ?
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A. Pointed out mutational changes

B. Detected sex linkage

C. Identified barr bodies

D. Gave the number of human chromosomes
1272. There are about _________ muscles in human beings.
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A. 300

B. 703

C. 650

D. 206

1273. Special kind of protein containing iron is called as _________ ?
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A. White blood cell

B. Hemoglobin

C. Hormones

D. Red blood cell

1274. The number of alveoli in human lungs is estimated to be around:_________?
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A. 800 millions

B. 1 billion

C. 500 millions

D. 150 millions

1275. Which of the following viruses has caused thousands of deaths globally as an emergent virus?
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A. MERS

B. OC43

C. SARS-CoV-2

D. HKUt

1276. Father of genetics?
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A. Darwin

B. Morgan

C. Mendal

D. Aristotle

1277. How many liters of saliva inhale by a Human?
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A. 2 Liter

B. 1 Liter

C. Half Liter

D. 3 Liter

1278. Among the following which one is a diploblastic organism?
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A. Hydra

B. Squids

C. Crabs

D. Earthworm

1279. The number carpels in our feet is__________?
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A. 16

B. 0

C. 14

D. 7

1280. BCG immunisation is for:__________?
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A. None of the above

B. Tuberculosis

C. Leprosy

D. Cancer