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Biology 11: Test #4 > Roots > Flashcards

Flashcards in Roots Deck (11)
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1

Review reading assignment

For roots

2

Primary root

Large main root

3

Secondary root

A smaller root

4

Tap root system

Plant has one main (primary) root. Smaller roots branch off of it

5

Fibrous root system

There is NO primary root. It is simply a network of many secondary roots

6

Root parts

Epidermis
Cortex
Endodermis
Vascular cylinder

7

Epidermis

Outer layer. Absorbs water and minerals from the soil. Root hairs.

8

Root hairs

Increase the absorptive surface area

9

Cortex

Found beneath the epidermis. In some roots, used to store nutrients. (Carrots/turnips=good)

10

Endodermis

Surrounds the vascular cylinder. Ensures a one way flow of water into the root. Prevents water from escaping

11

Vascular cylinder

Found at the center of the root. Contains xylem and phloem