1. Angiosperms are characterized by the presence of
a) Roots and stem
b) Leaf and flowers
c) Fruit
d) All of these
Explanation: All of these
2. In majority of dicot, the direct elongation of the radicle leads to the formation of
a) Primary root
b) Secondary root
c) Tertiary root
d) None of these
Explanation: In majority of dicot, the direct elongation of the radicle leads to the formation of primary root
3.The primary root and its branches constitute
a) Fibrous root system
b) Tap root system
c) Both (a) and (b)
d) None of these
Explanation: Tap root system
4. In wheat (monocot)
a) Primary root is short lived
b) Primary root replaced by fi brous roots
c) Fibrous roots arises from the base of stem
d) All are correct
Explanation: All are correct
5. Adventitious roots are found in
a) Grass
b) Monestra
c) Banyan tree
d) All of these
Explanation: All of these
6. Adventitious roots arise from part other than
a) Hypocotyl
b) Epicotyl
c) Plumule
d) Radicle
Explanation: Adventitious roots arise from part other than radicle.
7. Functions of root are
a) Absorption of water and mineral from soil
b) Anchoring of plant in soil
c) Storage of food material and synthesis of plant growth regulator
d) All of these
Explanation: All of these
8. What is the number of regions in which a root is divided?
a) 1
b) 2
c) 3
d) 4
Explanation: 3
9. Root is covered at the apex by a thimble-like structure called
a) Root cap
b) Radicle
c) Coleorhiza
d) Coleoptile
Explanation: Root cap
10. The root region is arranged proximal to distal part in the following manner
a) Zone of cell elongation‒ Zone of cell maturation ‒ Zone of cell division
b) Zone of cell division ‒ Zone of cell elongation ‒ Zone of cell maturation
c) Zone of cell maturation‒ Zone of cell elongation ‒ Zone of cell division
d) Zone of cell maturation ‒ Zone of cell division ‒ Zone of cell elongation
Explanation: Zone of cell maturation‒ Zone of cell elongation ‒ Zone of cell division