[MCQ]Biology MCQs For WBCS Exam||SET 24

 

 Biology MCQs For WBCS Exam

WBCS BIOLOGY MCQ Q1. 

Which of the following structures is thought to be exceptionally rich in hydrolytic enzymes?

(a) Lysosomes

(b) Microsome

(c) Chromosomes

(d) Endoplasmic reticulum

Ans. (a)

WBCS BIOLOGY MCQ Q2. 

The selective digestion of cytoplasmic organelles by the lysosomes is called

(a) Osmotrophy

(b) Autophagy

(c) Heterophony

(d) Autolysis

Ans. (b)

WBCS BIOLOGY MCQ Q3. 

The arrangement of outer and central microtubules in a cilium is called the

(a) 9 + 1 pattern

(b) 9 + 2 pattern

(c) 8 + 2 pattern

(d) 8 + 1 pattern

Ans. (b)

WBCS BIOLOGY MCQ Q4. 

Ureotelic animals are those that eliminate the nitrogenous wastes predominantly in the form of

(a) Uric acid

(b) Ammonia

(c) Amino acids

(d) Urea

Ans. (d)

WBCS BIOLOGY MCQ Q5. 

Animal species living in chronic shortage of water generally excrete uric acid as the principal nitrogenous waste product

(a) Because uric acid can be stored in the body for long periods

(b) Uric acid is highly soluble in water and can be easily eliminate

(c) The kidneys are unable convert uric acid into urea

(d) Enzymes for the formation of urea are absent

Ans. (a)

WBCS BIOLOGY MCQ Q6. 

Which one of the following sets of animals produces the same substance as their chief excretory product?

(a) Cockroach, camel and lizard

(b) Man, dog and camel

(c) Amoeba, ant and antelope

(d) Fowl, fish and frog

Ans. (b)

WBCS BIOLOGY MCQ Q7. 

A freshwater fish must continuously

(a) Acquire water and get rid of salt

(b) Get rid of both water and salt

(c) Acquire both water and salt

(d) Get rid of water and acquire salt

Ans. (d)

WBCS BIOLOGY MCQ Q8. 

A nephridium of an earthworm drains materials directly from the

(a) Gut

(b) Coelom

(c) Lymph

(d) Blood

Ans. (b)

WBCS BIOLOGY MCQ Q9. 

The basic unit of a vertebrate kidney is the

(a) Ureter

(b) Nephron

(c) malpighian tubule

(d) Islets of langerhans

Ans. (b)

WBCS BIOLOGY MCQ Q10. 

Nephrons are connected with

(a) Respiratory system

(b) Nervous system

(c) Circulatory system

(d) Excretory system

Ans. (d)

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