Question

Explain how are root modified to perform various functions

Answer 1

Answer:

pata nahi

baise

Explanation:

absorb water

absorb minerals

absorb nitrogen

for hrowtj

Answer 2

$\sf\underline{ Root }$ :-

⟶ The underground part of the flowering plant is called root.

⟶ There are two types of roots, they are :-

1. Tap root
2. Fibrous root

$\sf\underline{ Root \: \: Modification }$ :-

⟶ Root of some plants change their shap and structure to perform some addition functions, by absorption and conduction such types lg modification is known as root modification.

⭐ Types of root modification and it's function :-

There are 8 types of root modification they are :-

1. Storage roots
2. Prop roots
3. Stilt roots
4. Respiratory roots
5. Velamen roots
6. Parasite roots
7. Nodular roots
8. Photosynthetic roots

$\huge{ 1) }$ $\sf\underline{ Storage \: \: roots }$ :-

⟶ Roots of some plants store food materials.

⟶ Due to this they are swollen.

⟶ Ex :- Carrot

$\huge{ 2) }$ $\sf\underline{ Prop \: \: roots }$ :-

⟶ Roots of some trees arise from heavy branches.

⟶ They hang in air and enter into soil.

⟶ They give pillar like support to the heavy branches.

⟶ Ex :- Banyan tree

$\huge{ 3) }$ $\sf\underline{ Stilt \: \: roots }$

⟶ Roots of some plants arise from the lower nodes of the stem.

⟶ They give mechanical support of the plant.

⟶ Ex :- Sugarcane

$\huge{ 4) }$ $\sf\underline{ Respiratory \: \: roots }$ :-

⟶ Roots of some plants grow in swampy area.

⟶ They grow vertically upwards in to the air.

⟶ Their openings on their surfaces help to get oxygen for respiration.

⟶ Ex :- Avicenna

$\huge{ 5) }$ $\sf\underline{ Velamen \: \: roots }$

⟶ Roots of some plants are found on the branches of other plants.

⟶ The function of these adventitious roots is to absorb moisture from atmosphere.

⟶ Ex :- Vanda

$\huge{6) }$ $\sf\underline{ Parasite \: \: roots }$ :-

⟶ The plants that are depend upon some other plants for their food and water called parasite plants.

⟶ They are two types :-

1. Complete parasite
2. Partial parasite

⟶ Ex :- Cuscuta, Viscum

$\huge{7) }$ $\sf\underline{ Nodular \: \: roots }$ :-

⟶ Roots having nodules are called nodular roots.

⟶ These are present in the members of Fabaceae.

⟶ Rhizobium bacteria live in the root nodules and they fix atmospheric nitrogen.

⟶ Ex :- Groundnut

$\huge{ 8) }$ $\sf\underline{ Photosynthetic \: \: roots }$ :-

⟶ Roots of some plants become chlorophyllous.

⟶ In these plants normal, green leaves are reduced.

⟶ They perform photosynthesis.

⟶ Ex :- Taeniophyllum