Biology – Class 11 Mock Test 9

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Question 1 of 10

1. How many regions is the vertebral column divided into?

Question 1 of 10

Question 2 of 10

2. What are osmoregulators?

Animals which can change their osmolarity sometimes

Animals which cannot excrete out waste

Animals which can change their osmolarity

Animals which cannot change their body osmolarity

Question 2 of 10

Question 3 of 10

3. Excretion of which of the following is for the adaptation of water conservation?

Ammonia

Urea

Carbon dioxide

Uric acid

Question 3 of 10

Question 4 of 10

4. What percentage of body weight of an adult human is contributed by muscles?

20-30%

30-40%

40-50%

10-20%

Question 4 of 10

Question 5 of 10

5. Which of these is an example of pivot joint?

Between carpal and metacarpal of thumb

Knee joint

Between the carpals

Between atlas and axis

Question 5 of 10

Question 6 of 10

6. Macula densa of DCT are sensitive to magnesium ions.

True

False

Question 6 of 10

Question 7 of 10

7. Which of the following runs parallel to the Henle’s loop?

Renal vein

Ureters

Renal artery

Vasa recta

Question 7 of 10

Question 8 of 10

8. Which of the following is not correct regarding PCT?

It secretes potassium ions

It maintains the ionic balance of the body

It absorbs HCO₃^- ions

It does not maintain the pH

Question 8 of 10

Question 9 of 10

9. What are diuretics?

Substances which increase the glucose content in the urine

Substances which change the colour of the urine

Substances which decrease the urine formation

Substances which increase the urine formation

Question 9 of 10

Question 10 of 10

10. The kidney is retroperitoneal.

False

True

Question 10 of 10