Question

Hi!

define chemotropism give one example of chemotropism state whether this example is of the positive chemotropism or negative chemotropism .​

Answer 1

Define chemotropism.

A directional movement due to Chemical change.

Ex: Pollen tube toward 0vule

The growth of pollen tube towards ovule induced by chemical (stigmatic fluid).

Pollen tube grow down the style due to chemical substance produced by ovule during fertilisation.

Positive: Towards stimulus

Negative: Away from stimulus

Answer 2

Answer:

It is the response of plant due to chemical stimulus .

Explanation:

The directional movement of plant or its part towards or away from the chemical stimulus is called chemotropism .

For example , the pollen tube moves towards the ovule .