[MCQ]Biology MCQs For WBCS Exam||SET 18

 

 Biology MCQs For WBCS Exam

 

WBCS BIOLOGY MCQ Q1. 

Which one of the following is responsible for guttation?

(a) Root pressure

(b) Transpiration

(c) Photosynthesis

(d) Osmosis

Ans. (a)

WBCS BIOLOGY MCQ Q2. 

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

urea?

(a) Dorsal aorta

(b) Hepatic portal vein

(c) Renal artery

(d) Hepatic artery

Ans. (c)

WBCS BIOLOGY MCQ Q3. 

Pressure exerted in the treachery elements of a xylem as a result of metabolic activity of roots

which forces the water into xylem vessel and upwards into the stem for a certain height is

(a) Osmotic pressure

(b) Root pressure

(c) Atmospheric pressure

(d) Turgor pressure

Ans. (b)

WBCS BIOLOGY MCQ Q4. 

In what ways do lymph capillaries differ from blood capillaries?

(a) Lymph capillaries contain red blood cells

(b) Lymph capillaries have a wall of only one cell layer

(c) Lymph capillaries begin with blind ends throughout interstitial fluid

(d) Contain plasma

Ans. (c)

WBCS BIOLOGY MCQ Q5. 

In a closed circulatory system, blood is completely enclosed within

(a) The skeleton

(b) Sinuses

(c) Vessels

(d) Hearts

Ans. (c)

WBCS BIOLOGY MCQ Q6. 

Which is the most correct statement?

(a) Most of the water that filters into Bowman‟s capsule is reabsorbed

(b) One-half of the water that filters into Bowman‟s capsule is reabsorbed

(c) One-half of the glucose that filters into Bowman‟s capsule is reabsorbed

(d) None of the salts that are filtered in Bowman‟s capsule are reabsorbed

Ans. (a)

WBCS BIOLOGY MCQ Q7. 

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

(a) Fishes

(b) Reptile

(c) Birds

(d) Amphibians

Ans. (a)

WBCS BIOLOGY MCQ Q8. 

Which of the following parts of the nephron is least permeable to water?

(a) Proximal tubule

(b) Descending limb of the loop of Henle

(c) Ascending limb of the loop of Henle

(d) Collecting duct

Ans. (c)

WBCS BIOLOGY MCQ Q9. 

The mechanism of uric acid excretion in nephron is

(a) Diffusion

(b) Ultra filtration

(c) Osmosis

(d) Secretion

Ans. (b)

WBCS BIOLOGY MCQ Q10. 

Hemoglobin is found in

(a) All invertebrates

(b) Only in vertebrates

(c) Earthworm and rabbit

(d) Cockroach and earthworm

Ans. (c)

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