Structure of the Leaf

Q.

Photosynthesis in a cactus is carried out by ________.

1. Flowers

2. Thorns

3. Leaves

4. Stem

Q.

The leaf is attached to the plant stem by the ________

1. Peduncle

2. Vein

3. Midrib

4. Petiole

Q.

A leaf mainly consists of two parts-lamina and ___.

Q.

Veins transport food and nutrients to different parts of the leaf.

1. Chlorophyll

2. Petiole

Q. What is the petiole of a plant?

1. A stalk that attaches the leaf blade to the stem.
2. The region of attachment of the leaf with the stem.
3. The flat green part of a leaf.
4. A pigment that imparts the green colour to the leaves.

Q. Identify the correctly matched pair from the following.

1. Lamina - Transports water
2. Midrib - Supports leaf
3. Vein - Absorbs sunlight
4. None of the above

Q.

In some plants, the leaf base swells up and forms a __ that can lose water rapidly.

Q. The leaf is attached to the plant stem by the ________.

1. petiole
2. midrib
3. peduncle
4. vein

Q. What are the functions of the network of veins in a leaf?

Q.

Identify the error(s) in the given statements:

Petiole is a flat, thin, green and broad part of the leaf.

Q.

A thick vein in the middle of the leaf is _____.

1. lamina

2. petiole

3. anvil

4. midrib

Q. is a swollen leaf base which can rapidly lose water.

1. Petiole
2. Pulvinus
3. Lamina

Q. Match the parts of the leaf depicted in the image with the descriptions given.

a. Midrib

b. Lamina

c. Petiole

d. Veins

1. i-c, ii-b, iii-d, iv-a

2. i-a, ii-b, iii-c, iv-d

3. i-d, ii-c, iii-b, iv-a

4. i-b, ii-a, iii-d, iv-c

Q.

The exchange of gases as well as water vapour occurs through tiny pores called ___ (i) ___ present at the ___(ii)___ surface of the leaf.

1. (i) stomata (ii) lower

2. (i) lenticel, (ii) upper

3. (i) stomata, (ii) upper

4. (i) veins (ii) lower

Q. Calyx closely resembles leaves as each it of it posses three leaf traces. What are leaf traces?

Q.

A thick vein in the middle of the leaf is _____.

1. Lamina

2. Petiole

3. Both of these

4. Midrib

Q.

In some plants, the leaf base can swell up and form a ___ that can lose water rapidly.

1. Calyx

2. Corolla

3. Both b and c

4. Pulvinus

Q.

The thick main vein in the center, separating the leaf into two parts, depicted in the image below is known as the ____________.

1. midrib

2. venation

3. blade

4. pedicel

Q.

Which of the following attaches the leaf to the stem?

1. Lamina
2. Midrib
3. Veins
4. Petiole

Q. The broad part of a leaf is called ______.

1. petiole
2. vein
3. midrib
4. lamina

Q.

Sam while walking through a paddy field uprooted a paddy and observed that their roots are different from the roots of the plant 'X' growing in his garden. Which among the following statements are true?

1. X has fibrous root system.
2. X has parallel venation.
3. X could be hibiscus.
4. X could be groundnut plant with parallel venation.

Q. On the auspicious occasion of Diwali, Raj was served food on a banana leaf. Raj was curious to identify the parts of the leaf. Can you help him out?

The broad green part of the leaf is called ____ (i) ____ and the stalk of the leaf is called ___(ii)____.

1. (i) Petiole, (ii) Midrib

2. (i) Midrib, (ii) Lamina

3. (i) Stomata, (ii) Petiole

4. (i) Lamina, (ii) Petiole