Conical fleshy roots occur in

How many of the following statements are consistent with the functions of the root?
$I$ - Absorption of water and minerals from the soil
$II$ - Providing a proper anchorage to the plant parts
$III$ - Storing reserve food material
$IV$ - Synthesis of plant growth regulators

Given below are two statements.
$Statement-I$: In root hair, the outer layer of the cell wall is composed of pectin.
$Statement-II$: In root hair, the inner layer of the cell wall is composed of chitin.
Choose the correct answer from the options given below with reference to the structure of root hair.

Buttress roots are found in ...... .

Which one of the following expressions is associated with a 'mangrove plant'?

Water is absorbed by