Question

1. (i) Draw a diagram to show open stomatal pore
and label it:
(a) Guard cells (b) Chloroplast.
(ii) State two functions of stomata.
(iii) How do guard cells regulate the opening and
closing of stomatal pore?​

Answer 1

a)This is the labelled diagram of Stomata..

b)Two functions of Stomata are:-

They allow for gas exchange acting as an entryway for carbon dioxide (CO2) and releasing the Oxygen (O2) that we breath.

The other main function is regulating water movement through transpiration.

c)The opening and closing of stomata are controlled by the guard cells. When water flows into the guard cells, they swell up and the curved surface causes the stomata to open. When the guard cells lose water, they shrink and become flaccid and straight thus closing the stomata

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Answer 2

Explanation:

(ii) State two functions of stomata:-They are pores surrounded by specialized parenchymatic cells, called guard cells. Stomata have two main functions, namely they allow for gas exchange acting as an entryway for carbon dioxide (CO2) and releasing the Oxygen (O2) that we breath. The other main function is regulating water movement through transpiration.

(iii) How do guard cells regulate the opening and

closing of stomatal pore? :-The opening and closing of stomata are controlled by the guard cells. When water flows into the guard cells, they swell up and the curved surface causes the stomata to open. When the guard cells lose water, they shrink and become flaccid and straight thus closing the stomata.