Reproduction In Plants

Question 1

Why do living things reproduce?

Answer 1

Living things reproduce to ensure continuity of their kind

Question 2

What do the male parts of the flower consist of?

Answer 2

The anther, and the filament.

Question 3

What do the female parts of a flower consist of?

Answer 3

The stigma, style, ovary, and ovule.

Question 4

True or False:
The anther contains pollen grains.

Answer 4

True

Question 5

True or False:
The anther supports the filament.

Answer 5

False.
The filament supports the anther.

Question 6

Which part of a flower contains male reproductive cells?

Answer 6

The pollen grains.

Question 7

What is contained in the ovary?

Answer 7

Ovules.

Question 8

What connects the stigma to the ovary?

Answer 8

The style.

Question 9

True or False:
The ovules contain eggs.

Answer 9

False:
The ovules contain egg cells

Question 10

True or False:
Some plants have both male and female parts in the same flower.

Answer 10

True.

Question 11

True or False:
Some plants have either male or female parts inside single flower.

Answer 11

True.

Question 12

What are the four processes involved in the reproduction of flowering plants?

Answer 12

1. Pollination
2. Fertilisation
3. Dispersal
4. Germination

Question 13

True or False:
Parents pass on their characteristics to their young when they reproduce.

Answer 13

True.

Question 14

What is pollination?

Answer 14

Pollination is the process by which pollen grains from the anther are transferred to the stigma of a flower.

Question 15

True or False:
Flowers can be pollinated by insects and birds.

Answer 15

True.

Question 16

True or False:
Wind cannot pollinate flowers.

Answer 16

False. Some pollen grains are transferred by wind.

Question 17

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

Answer 17

Self-pollination within the same flower, or across flowers on the same plant.

Cross-pollination occurs across flowers from different plants of the same kind.

Question 18

True or False:
Plants of different kinds
can reproduce through cross-pollination.

Answer 18

False.

Cross-pollination occurs across flowers from different plants of the same kind.

Question 19

What is fertilisation?

Answer 19

Fertilization is the fusion of the male reproductive cell with the egg cell.

Question 20

What happens to pollen grains when they land on the surface of the stigma?

Answer 20

Each pollen grain produces a pollen tube.

Question 21

Where do pollen tubes:
1. grow from?
2. pass through?
3. head towards?

Answer 21

Pollen tubes grow:
1. down from the stigma,
2. through the style,
3. to the ovary.

Question 22

True or False:
When the pollen tube reaches the the ovule, the female reproductive cell in the pollen tube fuses with egg cell.

Answer 22

False:
The pollen tube carries the male productive cell.

Question 23

True or False:
After fertilisation, most of the flower parts usually wither drop off

Answer 23

True.

Question 24

True or False:
After fertilisation, the ovary develops into seeds.

Answer 24

False.
The ovary enlarges and becomes a fruit, while the ovules in it develop into seeds.

Question 25

What is **sexual reproduction** in flowering plants?

Answer 25

The formation of new plants from seeds that involves the fusion of male and female reproductive cells.

Question 26

What is **dispersal**?

Answer 26

The **scattering of fruits or seeds** is called dispersal.

Question 27

True or False: Plants scatter or disperse their seeds as near as possible.

Answer 27

False. Plants need to ensure their seeds are dispersed as far away as possible.

Question 28

What happens when plants grow too closely together?

Answer 28

They compete for sunlight, water, and minerals.

Question 29

Name 4 methods of fruit/seed dispersal.

Answer 29

1. **Animal** dispersal 2. **Water** dispersal 3. **Wind** dispersal 4. **Splitting** /**Explosive** action

Question 30

What is **germination**?

Answer 30

Germination is when, given suitable conditions, seeds develop into young plants.

Question 31

What do seeds need to germinate?

Answer 31

1. Air 2. Water 3. Suitable temperature

Question 32

Which part of the baby plant grows first?

Answer 32

The root.

Question 33

Does a baby plant make its own food?

Answer 33

No. A baby plant is unable to make its own food.

Question 34

Where do baby plants get their nutrients from?

Answer 34

Baby plants get their nutrients from the food stored in its **seed leaves**.

Question 35

When does a young plant start making its own food?

Answer 35

A young plant makes its own food **ater it develops leaves**

Question 36

How do non-flowering plants reproduce?

Answer 36

They produce **spores** which can grow into new plants.

Question 37

True or False: Spores are microscopic.

Answer 37

True.

Question 38

What is the main way in which spores are dispersed?

Answer 38

Spores are mainly dispersed by wind.

Question 39

Describe 3 ways in which animals aid in dispersal

Answer 39

1. Seeds are **discarded by animals** after eating the fruit. 2. Eaten seeds are **passed out in animal droppings**. 3. Seeds with bristles, sticky hairs, or hooks are dispersed by **sticking to animal fur, or human clothing**.

Question 40

Name some features that fruits or seeds might need for water dispersal.

Answer 40

They should be **waterproof**, and should **float** in water.

Question 41

How do some fruits/seeds use wind dispersal?

Answer 41

They are usually **light and small**, easily carried by wind. Some have **wing-like structures** that help them stay longer in the air.

Question 42

What is splitting / explosive action?

Answer 42

It is when fruits split open to shoot their seeds in different directions.

Question 43

True or False: Splitting / Explosive action only happens when fruits are ripe.

Answer 43

False: Some fruits split open only after they have dried up.