unit 4

Question 1

what is a plant?

Answer 1

Plants are multicellular organisms, made up of eukaryotic plants cells. They have autotrophic nutrition and are capable of making tissues

Question 2

what do they do for eating?

Answer 2

photosynthesis

Question 3

how plants can be classified and their parts?

Answer 3

Sedless:
- Non-vascular system : Hepatica
- Simple Vascular System : Mosses
- Complex vascular system : Ferns
Bryophytes
Plants with seed:
- Complex vascular system:
- No fruits: Gymnosperms
- Has fruits: Angiosperms
Spermatophytes

Question 4

Parts of a plant

Answer 4

Roots
Stem
Leaves

Question 5

Parts of roots

Answer 5

Secondary roots
Neck
Primary Root
Root hairs
Growth Zone
Root cap

Question 6

parts of stem

Answer 6

Terminal bud
Axillary bud
Node
Internode
Branch

Question 7

parts of leaves

Answer 7

Underside
Top
Veins
Margin
Petiole

Question 8

how is it done photosynthesis?

Answer 8

water+minerals+C02+sunlight -> organic matter+ O2

Question 9

how is it done nutrition?

Answer 9

1. absorption of water and minerals
2. transportation of xylem sap to chlorophyl area
3. photosynthesis
4. Pholem sap is transported to the rest of the plant
5. Cell respiration
6. Elimination of waste substances

Question 10

interaction

Answer 10

tropism and nastic movement

Question 11

reproduction

Answer 11

Asexual
– spores
– vegetative reproduction
– bulbs
– tubers
– stolons
– rhizomes

Question 12

Angiosperm flower parts normal, female and male

Answer 12

NORMAL
Petals
Sepals
Pedicel
FEMALE
Name stamen
Anther
Filament
MALE
Name carpel
Stigma
Style
Ovary

Question 13

stages of reproduction

Answer 13

1. production of pollen grains
2. pollination
3. fertilisation
4. seed formation
5. fruit formation
6. germination

Question 14

uses in plants

Answer 14

food, antipollution, construction, medicinal, ornamental, textile