biology MCQs – Page 65

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 Review each marked answer and report any item that may be outdated or unclear.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
1281. The frequency of a character is found to be increasing when __________?
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A. It is dominant

B. It is inheritable

C. It is recessive

D. It is adaptable

1282. More water is reabsorbed in blood due to _________ ?
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A. More anti-diuretic hormone

B. Lesser anti-diuretic hormone

C. Active functioning of pancreas

D. Inactivity of pituitary gland

1283. All are functions of hypothalamus, but, _________ ?
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A. Regulation of sleep and emotions

B. Regulation of blood osmotic pressure

C. Regulation of body temperature

D. Regulation of anti-diuretic hormones
1284. Self pollination is not possible in ________ ?
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A. Dioecious plants

B. Pawpaw

C. Flowers

D. both A andB
1285. Chromatid is _________ ?
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A. One half of chromosome

B. Complete chromosome

C. Haploid chromosome

D. Duplicate chromosome

1286. Serum differs from blood in________?
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A. Lacking globulins

B. Lacking albumins

C. Lacking clotting factors

D. Lacking antibodies

1287. Study of interaction of living organisms with other organisms and their environment relates with ___________ ?
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A. Botany

B. Pharmacology

C. Ecology

D. Social biology

1288. Kind of cellular respiration which occurs in presence of oxygen is _________ ?
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A. Acidic respiration

B. Nitrogenous respiration

C. Aerobic respiration

D. Anaerobic respiration
1289. Which of the following secrete hydrochloric acid in stomach?
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A. Epithelial

B. Oxyntic

C. Goblet

D. Mucosa

1290. What is the number of True Ribs in human body?
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A. 16

B. 18

C. 14

D. 12

1291. How many bones does a baby have_______?
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A. None of these

B. 300

C. 212

D. 206

1292. Leprosy bacillus was invented by :__________?
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A. Fleming

B. Koch

C. Hansen

D. Harvey

1293. What is called movement of cell against concentration gradient ?
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A. Active Transport

B. Osmosis

C. Diffusion

D. Passive Transport

1294. Number of cells that are destroyed in adults by apoptosis are ________ ?
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A. 10 to 20 billion cells

B. 50 to 70 billion cells

C. 15 to 25 billion cells

D. 20 to 35 billion cells

1295. If two opposite alleles come together, one finding morphological expression masking the other, the fact is described as law of _________ ?
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A. Inheritance

B. Segregation

C. Dominance

D. Limiting factor

1296. Which fungus is known as Green Mold ?
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A. Penicillium

B. Mucus

C. Aspergillus

D. None of the above

1297. Banana belongs to which category?
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A. tree

B. grass

C. herb

D. None of these

1298. Blood does not clot in the blood vessels due to the presence of ___________?
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A. Fibrinogen

B. Heparin

C. Thrombin

D. Prothrombin

1299. Human body makes about 20 million erythrocytes in__________?
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A. Two Seconds

B. Three Seconds

C. One Second

D. Four Seconds

1300. A gene is said to be dominant, if _________?
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A. It is never expressed in any condition

B. It is expressed only in heterozygous

C. It expresses its effect only in heterozygous state

D. It is expressed both in heterozygous and heterozygous condition