Roots for Mechanical Support

Q.

What are pneumatophores?

Q.

Write two examples of plants with prop roots.

Q.

The aerial roots of banyan tree are not considered as true roots. Give reasons.

Q.

Supporting roots of sugarcane arise from:

1. lower nodes of stem

2. aerial branches of stem

3. internodes of stem

4. radicle

Q. Which is incorrect match?

1. Adventitious root – Sweet potato
2. Stilt root – Turnip
3. Tap root – Carrot
4. Prop root – Banyan Tree

Q.

What are the roots of the banyan tree which are used for support called?

Q.

The essential functions of roots are anchorage and absorption of water and minerals in the terrestrial plant. What functions are associated with the roots of aquatic plants. How are roots of aquatic plants and terrestrial plants different?

Q.

It is easier to pull out a wheat or maize plant, but it is difficult to pull out a tomato or brinjal plant. Why is it so?

Q. The modified supporting roots called prop roots and stilt roots are seen respectively in (i) Banyan and Maize (ii) Banyan and Sugarcane (iii) Maize and Banyan (iv) Sugarcane and Maize.

1. i and ii only
2. i and iv only
3. ii only
4. iii only
5. i only

Q. Clinging roots are found in

1. Orchids
2. Trapa
3. Podostemon
4. Screwpine

Q.

define stilt roots

Q. Which is incorrect match?

1. Tap root – Carrot
2. Prop root – Banyan Tree
3. Adventitious root – Sweet potato
4. Stilt root – Turnip

Q. Which of the following plants possesses culm?

1. Zingiber
2. Bamboo
3. Cocos
4. Cuscuta

Q. Roots are modified to perform specific functions other that their normal functions. The given figure shows modification of the roots of mangrove plant. Select the incorrect option regarding it.

1. The stilt roots of red mangrove help in breathing.
2. The root system is highly entangled, hugh and extensive under the water.
3. A large number of animals such as small fishes, crustaceans, seahorses, etc., find shelter in this root system.
4. Besides providing mechanical support, these roots also perform photosynthetic functions in the plant.

Q. Betel has

1. Clinging roots
2. Respiratory roots
3. Fleshy roots
4. Photosynthetic roots

Q. Assertion :Avicennia has pneumatophores. Reason: Pneumatophores help the plant to get oxygen for respiration.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Which is incorrect match?

1. Tap root – Carrot
2. Prop root – Banyan Tree
3. Adventitious root – Sweet potato
4. Stilt root – Turnip

Q. Select the mismatched pair.

1. Slit roots - Sugarcane
2. Tap root system - Dicots
3. Fibrous root system - Monocots
4. Fasciculated roots - Curcuma

Q. Date Palm is?

1. Caudex
2. Deliquescent
3. Culm
4. Excurrent

Q. Still roots are

1. Primary root
2. Secondary root
3. Tap root
4. Adventitious root