Structure of flowering plants (Chapter 24)

Question 1

Types of Roots

Answer 1

1. Tap Roots eg. Carrot

2. Fibrous Roots eg. grasses

Question 2

Function of roots

Answer 2

1. anchor the plant in the soil
2. absorb water and mineral salts from the soil
3. transport the absorbed materials to the shoots
4. store food in some plants

Question 3

Zones in a root

Answer 3

1. Protection
2. Cell Production (mertsematic zone)
3. Elongation (with plant growth regulators such as auxins)
4. Differentiation (elongated cells develop into different tissues)

Question 4

Different tissues

Answer 4

1. Dermal Tissue (epidermis) protects the plant
2. Ground Tissue, found between dermal and vascular
3. Vascular Tissue, (xylem and phloem) which transports materials.

Question 5

Meristem

Answer 5

A meristem is a plant tissue capable of mitosis

Question 6

Herbaceous plants

Answer 6

Herbaceous plants do not contain wood (or lignin)

Question 7

Woody plants

Answer 7

Woody plants contain wood (or lignin)

Question 8

Function of stem

Answer 8

1. Support the aerial parts of the plant
2. Transport water and minerals from the roots to the leaves and flowers.
3. transport food made in the leaves to the roots
4. Carry out photosynthesis
5. May store food.

Question 9

Sessile leaves

Answer 9

leaves without a petiole (joined directly to the stem)

Question 10

Two types of Venation

Answer 10

Parallel and net

Question 11

Functions of leaves

Answer 11

1. Make food
2. Exchange gases
3. Lose water in transpiration
4. Store food.

Question 12

Two types of xylem

Answer 12

xylem tracheids

xylem vessels

Question 13

Lignin

Answer 13

Lignin is a hard, strong chemical. It is found in some plant call walls and makes these walls very strong.

Question 14

Does a xylem have lignin

Answer 14

yes

Question 15

Does a phloem have lignin

Answer 15

no

Question 16

Monocots

Answer 16

Single Cotyledon
Long, narrow leaf
veins are parallel
vascular bundles scattered 
flower parts in multiples of three

Question 17

Dicots

Answer 17

Two cotyledons
Broad leaf
network of veins
ring of vascular bundles 
flower parts in multiples of four or five