Other Root Modification

Q. Which of the following is NOT true for epiphytes?

1. They are usually found in tropical rain forests.
2. Their roots contain velamen tissues.
3. The roots are hygroscopic.
4. They have tentacles over leaves.

Q. Which root amongst the following grows against gravitational force?

1. Prop roots
2. Stilt roots
3. Buttress roots
4. Pneumatophores

Q. Raphides are needle-like crystals of calcium oxalate which are specially found in

1. Pistia
2. Rosa
3. Asparagus
4. Dahlia

Q. Root tuft passes as columella and then forms gastral cone in

1. Hyalonema
2. Spongia
3. Spongilla
4. Cliona

Q. Pneumatophores are found in

1. Asparagus
2. sugarcane
3. Rhizophora
4. banyan tree

Q. explain the secondary growth in the vascular tissue of a dicot stem

Q. Which root amongst the following grows against gravitational force?

1. Prop roots
2. Stilt roots
3. Buttress roots
4. Pneumatophores

Q. Velamen present in orchids help in

1. synthesizing plastids
2. respiration
3. absorption of moisture from air
4. synthesizing food

Q.

What is meant by modification of root? What type of modification of root is found in the

(a) Banyan tree

(b) Turnip

(c) Mangrove trees