N4 Unit 2 Part A

Question 1

What is sexual reproduction?

Answer 1

A type of reproduction which involves two parents

Question 2

What is the female sex cell in animals?

Answer 2

Egg cell

Question 3

What is the male sex cell in animals?

Answer 3

Sperm cell

Question 4

Where are egg cells made?

Answer 4

Ovary

Question 5

Where are sperm cells made?

Answer 5

Testes

Question 6

What is fertilisation?

Answer 6

The process where the nucleus of the sperm fuses with the nucleus of the egg cell.

Question 7

What is internal fertilisation?

Answer 7

Where the sperm cell and egg cell meet are carry out fertilisation inside the body.

Question 8

How is a young mammal protected and fed during fetal development?

Answer 8

Protected by the amniotic fluid in the uterus and gets food from the placenta.

Question 9

How is a young mammal protected after birth?

Answer 9

Protected by their parents.

Question 10

What is external fertilisation?

Answer 10

Where the sperm cell and egg cell meet are carry out fertilisation outside the body.

Question 11

What is the female sex cell in plants?

Answer 11

Ovule

Question 12

What is the male sex cell in plants?

Answer 12

Pollen

Question 13

What is the function of the anther?

Answer 13

To make pollen

Question 14

What is the function of the ovary?

Answer 14

To make ovules

Question 15

What is the function of the stigma?

Answer 15

To catch pollen

Question 16

What is the function of the sepal?

Answer 16

To protect the flower before it opens

Question 17

What is the function of the petals?

Answer 17

To attract insects

Question 18

Which part of the flower develops into the fruit after fertilisation?

Answer 18

Ovary

Question 19

Which part of the flower develops into seeds after fertilisation?

Answer 19

Ovules

Question 20

What is pollination?

Answer 20

The transfer of pollen from the anther of one flower to the stigma of another.

Question 21

Describe the process of wind pollination.

Answer 21

Wind pollination involves the wind blowing pollen from one plant to another.

Question 22

Describe the process of insect pollination.

Answer 22

Insect pollination involves an insect transferring pollen from one plant to another.

Question 23

How does animal internal seed dispersal work?

Answer 23

Seeds are surrounded by succulent fruit to encourage animals to eat them.

Question 24

How does wind seed dispersal work?

Answer 24

Seeds are attached to structures which allow them to be caught by the wind.

Question 25

How does animal external seed dispersal work?

Answer 25

Seeds are attached to structures which can be caught on animal’s fur.

Question 26

What is asexual reproduction?

Answer 26

A type of reproduction which involves one parent

Question 27

Name three types of asexual reproduction in plants.

Answer 27

Blubs, tubers and runners

Question 28

What is the function of the seed coat?

Answer 28

To protect the seed.

Question 29

What is the function of the embryo?

Answer 29

Becomes the new plant

Question 30

What is the function of the food store?

Answer 30

Provides energy for growth

Question 31

What is germination?

Answer 31

The process by which a plant grows from a seed into a seedling

Question 32

Name the three factors seeds require in order to germinate.

Answer 32

Water, oxygen and a suitable temperature

Question 33

What is propagation?

Answer 33

To produce more plants

Question 34

What type of plants use tubers?

Answer 34

Potato

Question 35

What type of plants use runners?

Answer 35

Strawberry plant

Question 36

What type of plants use leaflets?

Answer 36

Mexican hat plant

Question 37

What type of plants use bulbs?

Answer 37

Daffodil

Question 38

What is artificial propagation?

Answer 38

A human-made method of producing more plants.

Question 39

What is a cutting?

Answer 39

A section of stem or leaf is cut and rooting hormone is used to encourage roots to grow.

Question 40

What is tissue culture?

Answer 40

A new plant is made from a few cells taken from a donor plant.

Question 41

What is hydroponics?

Answer 41

A method for growing plants without soil.

Question 42

Give one example of a plants used for raw materials and name the product produced.

Answer 42

Pine trees - furniture

Question 43

Give five examples of plants used to provide us with food.

Answer 43

Tomato, potato, banana, wheat and rice.

Question 44

How can plants provide us with fuel?

Answer 44

Trees are cut down and used as fuel for cooking and heating.

Question 45

Name three uses of plants.

Answer 45

Food, fuels and medicines.

Question 46

Give one example of a plant used to make a medicine.

Answer 46

Opium poppy - morphine

Question 47

What is pharming?

Answer 47

Genetically modifying a plant so that it produces a medicine.

Question 48

Give one advantage of pharming.

Answer 48

The product will be much easier and cheaper to produce than is currently possible.