Reproduction in plants

Question 1

What is Asexual reproduction?

Answer 1

A new offspring is produced by a single parent plant.

Question 2

What is Sexual reproduction?

Answer 2

A new offspring is produced by a two parent plant.

Question 3

What is a flower?

Answer 3

The reproductive part of a plant.

Question 4

What is a Hermaphrodite, Perfect or Bisexual flower?

Answer 4

Flowers with both male and female reproductive parts.

Question 5

What is a Unisexual or Incomplete flower?

Answer 5

Flowers with only one reproductive part, either female or male.

Question 6

What are Staminate flowers?

Answer 6

Flowers with only male parts

Question 7

What are Pistillate flowers?

Answer 7

Flowers with only female parts.

Question 8

What are the functions of a flower?

Answer 8

Plays a role in reproduction, makes fruits and attracts animals to help pollination.

Question 9

What are the parts of a flower?

Answer 9

Petal, sepal, stamen, filament, pistil, ovules, ovary, anther, style and stigma.

Question 10

What is a Sepal?

Answer 10

Green leaf like parts of the flower that holds and protects it.

Question 11

What is a Petal?

Answer 11

The brightly colours parts of the flower that attracts insects to help with pollination.

Question 12

What is a Stamen?

Answer 12

The male parts of the flower, consisting of the filament and anther which makes pollen grains.

Question 13

What is a Filament?

Answer 13

The male part of the flower that supports the anther.

Question 14

What is a Anther?

Answer 14

The male part of the flower that makes pollen grains.

Question 15

What is a Pistil?

Answer 15

The female parts of the flower which is made up of the ovary, ovules, stigma and style.

Question 16

What is an Ovary?

Answer 16

The female part of the flower where seeds are made.

Question 17

What is an Ovule?

Answer 17

Female part of the flower which becomes the seed of the fruit.

Question 18

What is a Stigma?

Answer 18

Female part of the flower above the Style where pollen grains are brought or stuck on its sticky surface so that it can go down into the style.

Question 19

What is a Style?

Answer 19

Female part of the flower which is a tube that goes down to the ovary.

Question 20

What is Pollination?

Answer 20

Transfer of pollen grains from the anther to the stigma of a flower.

Question 21

What are the agents of Pollination?

Answer 21

Birds, bees, humans, wind, water, insects and other animals.

Question 22

What is Self-pollination?

Answer 22

Transfer of pollen grains from the anther to the stigma of the sane flower and flowers belonging to the same plant.

Question 23

What is Cross-Pollination?

Answer 23

Transfer of pollen grains from the anther to the stigma of different flowers of the same species.

Question 24

What is fertilization?

Answer 24

The fusion of a male and female sex cells.

Question 25

What is a zygote?

Answer 25

A fertilized egg.

Question 26

What is the process of fertilization?

Answer 26

1. Pollen tube goes down to style and penetrates egg.
2. Two male nuclei pass down pollen tube into the embryo.
3. One nucleus fuses with nucleus in ovule to form a zygote.
4. Zygote divides and develops into embryo which eventually becomes a new plant.

Question 27

What are the five differences between a wind and insect pollinated flower?

Answer 27

Wind Pollinated Flower:
1. Flowers don’t have scent.
2. Has dull colours.
3. Filament is thin and hang outside.
4. Pollen grains are light and numerous in amount.
5. Stigma is feathery to catch pollen and hang outside.
Insect Pollinated Flower:
1. Flowers have a scent.
2. Has brightly coloured petals.
3. Filament is strong and inside.
4. Pollen grains are sticky and are few in amount.
5. Stigma is hairy and sticky and is inside.

Question 28

What is Germination?

Answer 28

When a seed starts to grow into a new plant.

Question 29

What are the parts of a seed?

Answer 29

Plumule, Testa, Radicle, Hilum, Cotyledon and Microhpyle.

Question 30

What is the function of the Plumule?

Answer 30

The developing shoot.

Question 31

What is the function of the Testa or seed coat?

Answer 31

For protection.

Question 32

What is the function of the Radicle?

Answer 32

Develops into the root system.

Question 33

What is the function of the Cotyledon?

Answer 33

Stored food.

Question 34

What is the function of the Microphyle?

Answer 34

Small hole where pollen tube was attatched to ovule. Absorbs water during germination

Question 35

What is the function of the Hilum or seed scar?

Answer 35

Points where seed was attatched in the pod.

Question 36

What is Asexual reproduction in plants?

Answer 36

Refers to the propagation of plants by means of vegetative parts and does not involve gametes.(sex cells)

Question 37

What is the Natural method?

Answer 37

The natural method of plant propagation refers to techniques and processes that occur in nature without human intervention.

Question 38

Examples of the Natural methods:

Answer 38

Rhizomes-Bamboo, tumerick, ginger
Tubers- Yam, cassava, potatoe
Runners- berries, cucumber, citrus fruits
Bulbs- Onion, garlic, broccoli
Corm corm- dasheen, banana, oats
suckers.

Question 39

What is the Artificial method?

Answer 39

The artificial method of plant propagation refers to techniques and processes that are deliberately carried out by humans to reproduce plants asexually.

Question 40

Examples of the Artificial methods:

Answer 40

Layering, culting, grafting, stem cutting, macoting and tissue cutting.