Plant Reproduction

Question 1

What is asexual reproduction?

Answer 1

Asexual reproduction is the formation of offspring from only one parent.

Question 2

What are runners?

Answer 2

Stems that grow from the base of the plant and eventually grow a new shoot and new plant
Eg: Strawberries

Question 3

What is sexual reproduction?

Answer 3

Involves two gametes joining together

Question 4

What is the function of a sepal?

Answer 4

The sepals protect the flower when it is a bud

Question 5

What do petals do?

Answer 5

Petals protect the internal parts of the flower. In many plants, the petals are brightly coloured in order to attract insects to the flower.

Question 6

What is the carpel?

Answer 6

The carpel is the female part of the flower.
Each carpel produces an egg cell.
The nucleus of the egg is the female gamete.
Some flowers have more than one carpel.

Question 7

What is the stamen?

Answer 7

The stamen is the male part of the flower.
The stamen produces pollen grains.
The nucleus in the pollen grain is the male gamete.
Most flowers have a large number of stamens.

Question 8

Name the parts of the carpel?

Answer 8

Stigma, ovary, style

Question 9

What is the stigma?

Answer 9

The stigma is the place where pollen grains will land.

Question 10

What is the style?

Answer 10

The style connects the stigma to the ovary. In some plants the style is very short.

Question 11

What is the ovary?

Answer 11

The ovary contains one or more ovules. Each ovule produces an egg. The nucleus
of the egg is the female gamete.

Question 12

Name the parts of the stamen

Answer 12

Pollen, anther, filament

Question 13

What is the filament?

Answer 13

The filament is a stalk that supports the anther. It ensures that the anthers are located high up in the flower, so that the pollen can leave the flower more easily.

Question 14

What is the anther?

Answer 14

The anther makes pollen grains. The nucleus in each pollen is the male gamete.

Question 15

What is pollination?

Answer 15

The transfer of pollen from a stamen to a carpel.

Question 16

Name the types of pollination?

Answer 16

Wind, insect, self

Question 17

Describe the process of fertilisation

Answer 17

Pollen are carried by wind or by an insect to the top of the carpel. The pollen then forms a tube which grows down through the carpel. The pollen nucleus, which is the male gamete, passes down the pollen tube. It joins to the nucleus of the egg, which is the female gamete. Fertilisation takes place in the base of the carpel. Fertilisation results in the formation of a single cell called a zygote. The zygote will grow to form a seed. A seed consists of a young plant surrounded by a food supply. The seed or seeds become surrounded by another food supply which is called the fruit.
Fertilisation

Question 18

Name the parts of the seed

Answer 18

Testa, plumule, radicle, food supply

Question 19

What are the necessary conditions for germination?

Answer 19

Oxygen
Water
Suitable temperature

Question 20

What are the main events in germination?

Answer 20

Food from the seed allows the root and shoot to grow.
The root grows down into the soil.
The shoot grows up into the air.
Once the shoot emerges above the ground it forms green leaves and begins to make food for itself.