What can a green leaf be compared to?
A green leaf is compared to a factory as it manufactures food for the plant.
Does photosynthesis occur in leaves?
In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment chlorophyll. Chlorophyll absorbs certain portions of the visible spectrum and captures energy from sunlight.
What is the stomata and what does it do?
Stomata (Fig. 1) are small pores on the surfaces of leaves and stems, bounded by a pair of guard cells, that control the exchange of gases—most importantly water vapour and CO2—between the interior of the leaf and the atmosphere.
What is stomata class 9th?
Stomata are the small pores in leaves of plants. They act as lungs. Stomata take in carbon dioxide and give out oxygen during photosynthesis and visa versa during respiration, thus enabling the exchange of gasses.
What is stomata and draw a Labelled diagram?
Stomata are the tiny pores present on the surface of the epidermal leaves. tomato helps in the exchange of gases and transpiration. the opening and closing of the stomata is due to the help of guard cells which are also known as kidney shaped cells.
Who is the opening and closing of stomata controlled?
Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata.
What are the factors that affect the opening and closing of stomata?
The four factors affecting opening and closing of stomata are: (1) Light (2) Water Content of Epidermal Cells (3) Temperature and (4) Mineral Elements.
Why do stomata close at night?
Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. In leaves, they typically open during the day to favor CO2 diffusion when light is available for photosynthesis, and close at night to limit transpiration and save water.
What will happen if stomata are closed?
If stomata are closed in plant then the plant will not be able to exchange the gases like carbon dioxide and oxygen and then due to this they will be not able to perform photosynthesis and then will naturally die because of no food and nutrients.
Do most plants close their stomata at night?
Closed for the Night In order to minimize excessive water loss, stomata tend to close at night, when photosynthesis is not occurring and there is less benefit to taking in carbon dioxide.