Page 2 - 2.4-Home Assignment-(Obj & Subj) Coordination in Plants-(i)

7 Plant response to environment is mainly through
a. Induction of dormancy
b. Abscission of parts
c. Synthesis of pigments
d. Growth

8 Which one regulates plant growth
a. Commensalism
b. Climate
c. Hormones
d. Habitat

9 If the movement is towards the stimuli the response is
a. positive
b. negative
c. no response
d. neutral
10 Example of external stimuli is
a. Hormones
b. Light
c. Feeling hot
d. Feeling hungry

Subjective

Q.NO QUESTIONS Marks Level

1. Mention the two types of movements shown by plants in response to 1 E
stimuli.

2. What is tropic movement? 1 E

3. a) What do you mean by directional response of plants to touch? 3 Av
b) Define i) Stimulus ii) Response

4. a) Give three examples of external stimuli to which plants react. 3 Av
b) How do the plant cells change their shapes to produce
movements?

5. a) Differentiate between growth dependent and growth independent 3 D
movements.
b) Coordination in plants and animals are quite different from each
other. Justify.
6. How does the Touch-me-not plant detect touch and how do the 3 D
leaves move in response?