Stomata

Q. Stomata are surrounded by guard cells.

1. True
2. False

Q.

The structure in the leaves of plants which is responsible for exchange of oxygen and carbon dioxide is ___________.

1. Stomata

2. Pores

3. Chlorophyll

4. None of these

Q. What is stomata?

Q.

The tiny pores through which leaves take in carbon dioxide from the atmosphere are known as:

1. Phloem

2. Stomata

3. Spiracles

4. Xylem

Q.

Stomatal openings are surrounded by__.

Q. Leaves have tiny pores called _______ through which they exchange gases.

1. lenticels
2. stomata
3. spiracles
4. guard cells

Q.

In Cactus, photosynthesis is carried out in__.

Q. During photosynthesis, plants take in ________ and release _________.​

1. oxygen; carbon dioxide​

2. carbon dioxide​; oxygen​

Q.

The tiny pores from which leaves take up carbon dioxide from the atmosphere are known as___

Q. How do plants exchange gases?

Q. Opening and closing of stomata is due to

1. Pressure of gases inside the leaves.
2. Changes of turgor pressure in guard cells.
3. Effect of hormones.
4. Their genetic constitution.

Q. Which of the following statements support(s) the fact that the upper surface of a leaf is usually greener than the lower surface?

i. More chlorophyll is present on the upper surface to absorb more light.
ii. There are more stomata present on the upper surface than the lower surface.
iii. More sugar is formed on the lower surface.
iv. The green leaves look greener under the hot Sun.

Q. ___________ are the structures in a plant body that help in the process of transpiration.

1. Stems
2. Chloroplasts
3. Stomata
4. Dead cells

Q. During photosynthesis, plants take in ________ and release _________.​

1. carbon dioxide​; oxygen​

2. oxygen; carbon dioxide​

Q. Here is a question for you
The organ A of a tree have a large number of tiny pores called B on their surface. The gas C present in air
enter the organ A through B and utilised in food making process D .The gas E produced during D goes out through the same pores B. Identify A, B, C, D and E.

Q.

Which of the following does not have a modification of leaf?

1. Cactus

2. Onion

3. Venus flytrap

4. Neem

Q. ____________ is the byproduct of photosynthesis reaction.

1. Water
2. Chlorophyll
3. Oxygen
4. Carbon dioxide

Q. ____________ is the byproduct of photosynthesis reaction.

1. Water
2. Carbon dioxide
3. Chlorophyll
4. Oxygen

Q. Stomatal aperture and stomatal pore are same or different