Isobilateral Leaf

Q. During water stress, the bulliform cells:
(a) Become turgid
(b) Become flaccid
(c) Make the leaves curl inwards

1. only (a)
2. only (b)
3. (a) and (b)
4. (b) and (c)

Q. Bamboo and grasses elongate by the activity of:

1. Apical meristem
2. Lateral meristem
3. Secondary meristem
4. Intercalary meristem

Q. Which of the following is not true for plant cells?

1. Bulliform cells are present only in isobilateral leaves
2. Subsidiary cells are part of the stomatal apparatus
3. Lenticels are pores in woody plants for gas exchange
4. Companion cells are part of the epidermal tissue system