Leaf

Q.

What are the adaptations of a leaf for Photosynthesis?

Q.

Differentiate between reticulate and parallel venation.

Q.

The green colour pigment present in the leaves is called chlorophyll.

1. True

2. False

Q.

Label the parts of the leaf.

1. (1)-Stipule (2)-Vein (3)-Margin (4)-Lamina

2. (1)-Stipule (2)-Vein (3)-Lamina (4)-Margin

3. (1)-Petiole (2)-Midrib (3)-Lamina (4)-Vein

4. (1)-Petiole (2)-Vein (3)-Midrib (4)-Margin

Q.

What are sunken stomata? Explain with an example.

Q.

What are the plants having parallel venation?

Q.

Give two disadvantages of transpiration.

Q.

Grass leaves curl inwards during very dry weather due to

1. Flaccidity of bulliform cells

2. Closure of stomata

3. Tyloses in vessels

4. Shrinkage of air spaces in spongy mesophyll

Q.

What is the main function of stomata?

Q.

List the factors that affect the rate of transpiration.

Q.

Does the size of the leaf affect photosynthesis?

Q.

What is the main reason why the leaves in a cactus are reduced to spines?

1. To reduce the loss of water.

2. For protection from predators.

3. So that larger surface area of the stem is exposed.

4. None of the above.

Q.

What venation is mango leaf?

Q. The _____ help in transporting food and water to different regions of the leaf.

1. stomata
2. veins
3. lamina
4. petiole

Q.

What are the similarities and differences between the leaves of banana and mango?

Q.

Give two examples of a sessile leaf.

Q.

What is the composition of chloroplasts?

Q.

The arrangement of ___, in the lamina (or leaf blade) is known as venation of the leaf.

Q. The lines on the leaf are called _____.

1. venation
2. midrib
3. veins
4. all of these

Q.

Write one main function of leaf spines.

Q.

Define venation

Q.

Give two examples of each of the following:

Simple leaf

Q. The diagram shows types of venation in the leaves. What does 'P' and 'Q' represents?

1. P - Parallel venation, Q - Parallel venation
2. P - Parallel venation, Q - Reticulate venation
3. P - Reticulate venation, Q - Parallel venation
4. P - Reticulate venation, Q - Reticulate venation

Q.

What type of venation is seen in this leaf?

1. Parallel

2. ​Reticulate

3. None of these

4. Both of these

Q.

Do animal cells have chlorophyll?

Q.

Food prepared in leaves are stored as

1. Starch

2. None of these

3. Fats

4. Cellulose

Q.

Tiny pores present on the leaf surface are called ___.

Q.

What is the leaf anatomy seen in C₄ plants?

Q.

Which of the following are correct statements?

1) A bud is present in the axil of petiole in both simple and compound leaves.

2) A bud is present in the axil of every leaflet.

3) A bud is present in the axil of a branch.

4) The rachis of a compound leaf represents the midrib of the leaf.

1. (1) and (2) only

2. (2) and (3) only

3. (1) and (4) only

4. (1), (2), (3) and (4)

Q.

Parallel venation is not found in

1. Sugarcane

2. Peepal

3. Maize

4. Wheat