Ch40

Question 1

Vegetative propagation
Does it have a gamete
What does it divide by

Answer 1

Is asexual reproduction in plants
No gametes eg flowers
Divides by Mitosis

Question 2

What are the two types

Answer 2

Natural propagation

Artificial propagation

Question 3

4 parts are used for natural propagation

Answer 3

Stem
Root
Leaf
Bulbs

Question 4

What 4 methods are used in artificial propagation?

Answer 4

Cuttings
Grafting
Layering
Micropropagation

Question 5

What is cutting?

Answer 5

Cutting is cheap,simple. The parent plant stem is removed from parent plant to allow new roots and leaves to form.

Question 6

What is grafting?

Answer 6

Grafting is the joining of one plant with a second, it is combined with qualities of two plants into one
Eg apple tree grafted to crab apple

Question 7

What is layering?

Answer 7

Layering is when a growth of a new plant from a stem that is still attached to the parent plant, branch of parent plant is bent down covered in soil but the tip is exposed to air the tip will eventually become stem meaning covered part becomes root system. Eventually separating.eg strawberries

Question 8

What is micropropagation?

Answer 8

Also known as tissue culturing. This involves use of culture medium (agar) and growth regulators. It is when large numbers of plants produced from small plant pieces (single cell)

Question 9

Advantages of sexual reproduction

Answer 9

• Off spring shows variations

* less competition

Question 10

Disadvantages of sexual reproduction

Answer 10

• it is a complex process may depend on outside

* agents - slow growth

Question 11

Advantages of asexual (vegetative)reproduction

Answer 11

• simple process as no outside agents needed

* rapid growth

Question 12

Disadvantage of asexual reproduction

Answer 12

• no variations

* more competition, overcrowding