The Leaf and Its Parts

Q.

What is a leaf blade?

Q. Mesophyll tissue in the isobilateral leaf is

1. differentiated into palisade and spongy parenchyma with chloroplasts
2. differentiated into palisade and spongy collenchyma
3. undifferentiated
4. differentiated into palisade and spongy parenchyma without chloroplasts.

Q. Stomata in a mustard leaf are:

1. Kidney shaped
2. Dumb-bell shaped
3. Rectangular
4. Barrel-shaped

Q. The formation of secondary meristems; interfascicular cambium and cork cambium from differentiated parenchyma cells is dedifferentiation.

1. True
2. False

Q. Which of the following is not the part of the leaf?

1. Petiole
2. Lamina
3. Internode
4. Leaf base

Q.

The pulvinus helps the touch-me-not to

1. Rapidly close the leaves on touch

2. Supports the leaves

3. Provide water to the leave during emergency

4. Make the leaves more stiff

Q. Where do leaves arise on the stem?

1. Apex
2. Nodes
3. Anywhere on the stem
4. Internodes

Q.

Study the following statements and select the option with correct statements.
I. Pulvinus leaf base is present in some leguminous plants.
II. In Eichhornia, the petioles expand, becomes green and synthesize food.
III. Opposite phyllotaxy is seen in guava.

1. I and II

2. I and III

3. II and III

4. I, II and III

Q. Leaf arises from

1. root apical meristem
2. shoot apical meristem
3. lateral meristem
4. intercalary meristem