Flower Reproduction

Question 1

What is natural cutting?

Answer 1

One part of the plant detaches and takes root

Question 2

What is artificial cutting?

Answer 2

One part of the plant is cut off in order to make it grow roots

Question 3

What is layering?

Answer 3

A stalk takes root without detaching from the plant

Question 4

What is the cycle of flowering plants?

Answer 4

1) Development: development of flowers which contain male and female organs
2) Pollination: transportation of pollen from the anther in the stamen to the stigma in the pistil
3) Fertilization: the union of a male and female sex cell
4) Fructification: formation of fruit containing seeds
5) Germination: development of the embryo inside the seed which grows roots and a stalk

Question 5

What parts are in the stamen and what are their purposes?

Answer 5

Anther: contains pollen, the male reproductive organ
Filament: holds the anther
Pollen: tiny grains that contain sperm cells
Pollen tube: grows from a pollen grain to an ovule

Question 6

What parts are in the pistil and what are their purposes

Answer 6

Stigma: sticky top that receives pollen during fertilization
Style: tube on top of the ovary
Ovary: female reproductive organ containing ovules
Ovule: reproductive cell which will become the seed when fertilized by pollen

Question 7

What are the steps of self pollination?

Answer 7

1) pollen is transferred from anther to the stigma
2) pollen tubes grow from the pollen grains to the ovules
3) sperm cells move from the pollen tubes into the ovules, fertilizing the eggs in the ovules
4) the petals fall off the flower
5) the fertilized ovules become seeds

Question 8

What is the difference between self-pollination and cross-pollination?

Answer 8

In self-pollination the pollen comes from the same plant or flower.
In cross-pollination the pollen comes from a different plant or flower.