IGCSE A Level Biology Practice Test 88

Mammalian Heart Multiple Choice Questions (MCQ) PDF - 88

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Mammalian Heart Questions and Answers PDF Download: Quiz 88

MCQ 436: When an artery dilates the lumen becomes

A) constricted

B) wider

C) disappear

D) none of others

MCQ 437: From the soil, the inorganic ions can be loaded in the root hair through

A) diffusion

B) active transport

C) partial osmosis

D) differential osmosis

MCQ 438: Reabsorption of useful molecules or ions in kidneys occur through

A) diffusion

B) active transport

C) partial osmosis

D) differential osmosis

MCQ 439: Which option is incorrect? Rate of transpiration is

A) maximum during the night

B) zero at night

C) proportional to the active transport of water through root hairs

D) depends upon the thickness of the cuticle

MCQ 440: During the day, stomata remain

A) open

B) close

C) semi open

D) semi close

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