EVERYDAY SCIENCE

SCIENCE

BOTANY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Root hairs are extensions from of what part of the root?
A
The endodermis.
B
The epidermis.
C
The stele.
D
The cortex.
Explanation: 

Detailed explanation-1: -The outer epidermal cells of the root’s root are what grow as the root hairs.

Detailed explanation-2: -Roots hairs are cylindrical extensions of root epidermal cells that are important for acquisition of nutrients, microbe interactions, and plant anchorage.

Detailed explanation-3: -Root hairs usually arise as protrusions from the external, lateral walls of epidermal cells, although in a few species they originate from cortical cells one or two layers beneath the epidermis.

Detailed explanation-4: -The extensions of epidermal cells of a root are called root hair which helps in respiration.

Detailed explanation-5: -A waxy layer is called a cuticle which covers the epidermal surface and provides a cell of root bear root hair that increases the surface area for water absorption.

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