set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Stomata open and close due to

a) genetic clock

b) pressure of gases inside the leaves

c) circadian rhythm

d) turgor pressure of guard cells

Question : 2

Study the following statements :

1. Silviculture is the branch of Botany in which we study about development of forest.
2. Branch of Agriculture concerned with the production of crops called as Agronomy.
3. Agrostology is the study of grass.
4. Spermology is the study of fruits.

a) 1, 2 and 3

b) 1 and 2

c) 2 and 3

d) 1, 2, 3 and 4

Question : 3

Plants are formed like parent plant from

a) Cut stem

b) Both of the above

c) Seeds

d) None of the above

Question : 4

If a cell swells, after being placed in solution, the solution is

a) hypotonic

b) hypertonic

c) neutral

d) isotonic

Question : 5

Which one of the following correctly represents the normal adult human dental formula ?

a) $2/2, 1/1, 3/2, 3/3$

b) $3/3, 1/1, 3/2, 1/1$

c) $2/2, 1/1, 2/2, 3/3$

d) $3/3, 1/1, 3/3, 3/3$

Question : 6

Which part of the alimentary canal does not secrete any enzyme?

a) Oesophagus

b) Mouth

c) Stomach

d) Duodenum