1. Which stem act as an organ of perennation?
a) Potato
b) Ginger
c) Colocasia
d) All of these
Explanation: All of these
2. Which of the following is a gourd?
a) Cucumber
b) Pumpkins
c) Watermelon
d) All of these
Explanation: All of these
3. Which of the following is correct about gourds?
a) Stem tendril develops from apical bud.
b) Stem tendril are slender and spirally coiled.
c) Stem tendril doesn’t help in climbing.
d) Stem tendril develops from radicle.
Explanation: Stem tendril are slender and spirally coiled.
4. Select the incorrect matching:
a) Thorn ‒ Citrus, Bougainvillea
b) Flattened stem ‒ Opuntia
c) Underground stem ‒ Turmeric
d) Stem tendril ‒ Colocasia
Explanation: "Stem tendril ‒ Colocasia". This is incorrect.
5. The lateral branches original from basal and underground portion of the main stem, grow
horizontally beneath the soil and then come out obliquely upward giving rise to leafy shoots
seen in case of
a) Banana
b) Pineapple
c) Chrysanthemum
d) All of these
Explanation: All of these
6. A slender lateral branch arises from the base of the main axis and after growing aerially for
sometime arch downward to touch the ground seen in case of
a) Mint
b) Jasmine
c) Pistia
d) All of these
Explanation: All of these
7. A lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of
roots are found in aquatic plants like
a) Pistia
b) Eichhornia
c) Wolffia
d) Both (a) and (b)
Explanation: Both (a) and (b)
8. Select the correct statement from the following:
A. Fleshy cylindrical stem in Euphorbia carry out photosynthesis.
B. Pistia and eichhornia are example of offset.
C. Underground stem of grass and strawberry spread to new niche and when older part die
new plants are formed.
D. Thorns are woody, straight and pointed.
a) A and B only
b) B and D only
c) B and C only
d) All of these
Explanation: All of these
9. The most important vegetative organ for photosynthesis is
a) Stem
b) Leaf
c) Root
d) All of these
Explanation: The most important vegetative organ for photosynthesis is leaf.
10. Which of the following is correct about leaf?
a) It has originated from root apical meristem.
b) It is arranged in basipetal order.
c) It arises from axillary bud.
d) It bears a bud in its axil.
Explanation: It bears a bud in its axil.