biology MCQs – Page 71

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 Review each marked answer and report any item that may be outdated or unclear.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
1401. Amylase becomes denatured at an alkaline pH of:__________?
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A. 7

B. 9

C. 8

D. 6

1402. The higher animals have special organs for exchange of gases as their skin is ___________ ?
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A. Thick

B. Thin

C. Soft

D. Hard

1403. The pelvic girdle connect the leg with_________?
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A. Shoulder

B. Vertebral column

C. Skull

D. Rib cage

1404. The membrane covering the lungs is a________?
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A. Pleura

B. Mesothelium

C. Peritoneum

D. Pericardium

1405. A chromosome with centromere near the middle is called _________ ?
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A. Telocentric

B. Metacentric

C. Submetacentric

D. Acrocentric

1406. Blood vessels which carry deoxygenated blood are called__________?
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A. Veins

B. None of these

C. Arteries

D. Capillaries

1407. Stamens are not usually pendulous in plants pollinated by __________ ?
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A. Wind

B. Water

C. Rain

D. Insects
1408. How many nucleosomes are found in helical coil of 30 nm chromatin fibre ____?
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A. 9

B. 12

C. 10

D. 06
1409. Apiculture means:____________?
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A. Honey bee farming

B. Horse forming

C. Chicken farming

D. Silkworm farming

1410. At level above _____ , sound turns into harmful noise pollution?
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A. 100db

B. 80db

C. 30db

D. 120db

1411. Which blood cells are called Soldiers of the body_________?
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A. All of the above

B. WBC

C. RBC

D. Platelets

1412. Chlorophyll is a naturally occurring chelate compound in which central metal is
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A. None of these

B. magnesium

C. copper

D. iron

1413. Epiphytes are plants which depend on other plants for________?
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A. food

B. shade

C. None of these

D. mechanical support
1414. Who is the father of biology?
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A. None of above

B. Ronald Fisher

C. Aristotle

D. Albert Einstein

1415. The place of centromere where spindle fibres get attached is_________?
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A. Kinetochore

B. Centromere region

C. all of these

D. Kinochore

1416. Which is the smallest gland in human body ______?
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A. . Pineal Gland

B. Parathyroid

C. Pituitary Gland

D. Adrenal Gland

1417. The food conducting tissue of a plant is __________ ?
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A. Xylem

B. Phloem

C. Collenchyma

D. Parenchyma

1418. Ultra Microscopic viruses are the main cause of__________?
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A. Cholera

B. Malaria

C. Mumps

D. Measles

1419. The small intestine has three parts. The first part is called________?
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A. Oesophagus

B. Duodenum

C. None of these

D. Larynx

1420. Which organelles contain its own DNA?
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A. All of these

B. chloroplast

C. mitochondria

D. nucleus