1. Root hairs arise from
a) Zone of cell division
b) Zone of cell elongation
c) One of cell maturation
d) All of these
Explanation: Root hairs arise from one of cell maturation
2. Find out the incorrect statement:
a) Root hair absorbs water and mineral from the soil.
b) Root increases in length due to region of elongation.
c) Meristematic region have thin walled cell with dense cytoplasm.
d) Root cannot synthesize plant growth regulators.
Explanation: "Root cannot synthesize plant growth regulators". This is incorrect.
3. Which of the following is an exception for the modification of the tap root?
a) Carrot
b) Turnip
c) Sweet potato
d) All of these
Explanation: Sweet potato
4. Prop or pillar roots are found in
a) Carrot
b) Sweet potato
c) Banyan tree
d) Maize
Explanation: Prop or pillar roots are found in banyan tree.
5. Maize and sugarcane contain
a) Storage root
b) Stilt root
c) Pneumatophores
d) Prop roots
Explanation: Maize and sugarcane contain stilt root.
6. Find out the incorrect statement:
a) Sweet potato has root modification for storage of food.
b) Still root arises from lower nodes of the stem.
c) Rizophora posses pneumatophores.
d) Pneumatophores are meant for anaerobic respiration.
Explanation: "Pneumatophores are meant for anaerobic respiration". This is incorrect.
7. Which of the following is incorrect of stem?
a) It is developed from the plumule of embryo of a germinating seed.
b) It bears nodes and internodes
c) It bears only terminal bud not axillary bud.
d) Its main function is spreading of branches and bear leaves, flowers and fruits.
Explanation: It bears only terminal bud not axillary bud.
8. Functions of stem are
a) Conduct water, mineral and photosynthates.
b) Some perform storage food, support and protection
c) Some perform function of vegetative propagation
d) All of these
Explanation: All of these
9. Young stems are generally
a) Woody
b) Dark brown in color
c) Green and photosynthetic
d) All of these
Explanation: Young stems are generally green and photosynthetic.
10. Underground stem stores food in the following except
a) Zaminkand
b) Colocasia
c) Ginger
d) Sugarcane
Explanation: Sugarcane