40 - Vegetative Propogation

Question 1

Vegetative propagation

Answer 1

A type of asexual reproduction in plants

Question 2

Asexual reproduction

Answer 2

The production of a new individual from one parent

Question 3

Natural vegetative propagation

Answer 3

Stem- runners - strawberry
Root - suckers - raspberry
Leaf - leaflets - Devils backbone
Bud - new growth points on all plants - onion

Question 4

Artificial vegetative propagation

Answer 4

Cutting - small piece of parent plant + root powder, IBA or NAA
Layering - stem bent into soil, growth regulators added, climbing plants, clematis
Grafting - shoot (scion) of one plant attached to the root system (stock) of another plant - roses/apples
Tissue culture - growing a large number of plantlets in nutrient medium from small tissue samples - expensive + labour intensive

Question 5

Advantages of seed (sexual) reproduction

Answer 5

Variation
Disease resistance
Less overcrowding due to seed dispersal
Dormant seeds survive in soil

Question 6

Advantages of vegetative (asexual) reproduction

Answer 6

Simple process
No external agent needed
Young plants show fast growth
Little waste