Question

HI GUYZZ!!
Explain the primary and secondary functions of roots??

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Answer 1

Answer:

PRIMARY FUNCTION:-

• absorbtion of water and nutrients.
• anchoring the plant in the soil.

SECONDARY FUNCTION:-

• storage of foods.
• helps in propagation.

• some times roots fulfill the requirement of oxygen ..i.e succulent root

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Answer 2

Explanation:

Primary or Main Functions of Roots:

1. Anchorage:

Roots take part in fixation of the plant and supporting the aerial shoot system.

2. Absorption of Water:

Roots absorb water from soil.

3. Absorption of Minerals:

Roots absorb mineral salts from soil.

ADVERTISEMENTS:

4. Prevention of Soil Erosion:

Roots hold the soil particles firmly to prevent soil erosion.

5. Transport:

They take part in transport of absorbed water and minerals to shoot system. Similarly, root has channels for the flow of organic food from aerial parts.

Rootless Plants:

Many plants growing in aquatic habitats do not possess roots because there is little requirement for absorption of water and mineral salts, e.g., Wolffia, Utricularia, Myriophyllum, Ceratophyllum. In other aquatic plants roots develop only for balancing (e.g., Lemna, Pistia) and fixation (e.g., Hydrilla).

Secondary or Accessory Functions of Roots:

1. Storage:

It occurs in fleshy roots.

Examples of fleshy tap roots .

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(i) Conical, e.g., Carrot

(ii) Fusiform, e.g., Radish

(iii) Napiform, e.g., Beet, Turnip and

(iv) Tuberous, e.g., Mirabilis.

ADVERTISEMENTS:

Depending upon their shape and grouping, adventitious fleshy roots are of six types:

(a) Tuberous (root tubers), e.g., Sweet Potato

(b) Fasciculated, e.g., Asparagus, Dahlia

(c) Palmate, e.g., Orchis