Bright Tutorials Bright Tutorials
ICSE Class 7 Biology Question 4 of 16

Photosynthesis and Respiration — Question 6

Back to all questions
6
Question

Question 2

Draw a neat diagram of "opened and closed stomata" and answer the following questions :

  1. Label the following in the diagram : Guard cells, Stoma, Nucleus, Inner wall, Outer wall and Chloroplast.
  2. Mention the condition of guard cells during open and closed stomata.
  3. Write the specific location of these structures in the plant body.
  4. Name three important processes of plants in which the stomata are involved.
  5. Are the stomata open or closed during the day and night respectively ?
Answer
  1. Diagram of opened and closed stomata are given below:
Draw a neat diagram of opened and closed stomata and answer the following questions : Concise Biology Solutions ICSE Class 7.

  1. During open stomata, guard cells are turgid as they absorb water. Conversely, when stomata are closed, guard cells are flaccid as the water is drawn out.

  2. Stomata are found mainly on the lower surface of the leaves.

  3. Three important processes of plants in which the stomata are involved are :

    1. Photosynthesis
    2. Transpiration
    3. Respiration

  4. Stomata are open during the day and closed at night.