Reproduction

Question 0

Sexual reproduction

Answer 0

-using pollinations

•wind pollination

Question 1

Asexual reproduction

Answer 1

-also cloning
-runners grow roots out sideways
E.g. Strawberry plants/potatoes

Question 2

Fertilisation in Gametes

3 part answer

Answer 2

1. ) pollen grain lands on stigma
2. ) pollen tube grows out of pollen grain, down style-ovary
3. ) fertilised female gamete forms seed which grows into fruit

Question 3

Germination conditions

Answer 3

• water: activate enzymes (brake down food reserves in the seed).
• Oxygen: respiration (energy for growth.
• Temperature: good temp for enzymes in the seed to work

Question 4

Male part of flower

Answer 4

Stamen

• anther
• filament

Question 5

Female part of flower

Answer 5

Carpel

• stigma
• style

Question 6

The male gamete

Answer 6

• made in anther

- found in pollen grain

Question 7

The female gamete

Answer 7

Found in carple/ovary

Called ovule

Question 8

Petals

Answer 8

Large to attract insects for pollination

Question 9

Anther

What does it do

Answer 9

Makes pollen

Question 10

Filament

Answer 10

Filament holds up the anther

Question 11

Stigma

Answer 11

Exposed so that wind can easily blow pollen away

Question 12

Style

What goes down it

Answer 12

Pollen nucleus goes down the style in the pollen tube

Question 13

Ovary

Answer 13

Holds the ovules

Question 14

Ovules (where the ……will be fertilised)

Answer 14

The female eggs which will be fertilised

Question 15

Nectary

Answer 15

Taken by insects to fertilise a plant

Question 16

Sepals

Answer 16

Protect the bud whilst development

Question 17

Stamen

Answer 17

Enclosed within flower so that insects must make contact

Question 18

Carpel

Female/or male

Answer 18

Female; stigma, style, ovary.

Question 19

3 insect pollinated flowers

Answer 19

-Lilly

Question 20

Wind pollinated flower

Answer 20

Grass flowers

Question 21

Pollination

Answer 21

When pollen from an anther lands on the female stigma

Question 22

Self pollination

Answer 22

Pollen from an anther lands on a flower from the same plant which is genetically identical

Question 23

What stimulates the pollen tube to grow?

Answer 23

Plant hormones + chemicals on the surface of the stigma

Question 24

Why do pollen grains only produce tubes in flowers of their own species?

Answer 24

Because the pollen is a very specific shape and is not compatible with different flowers.

Question 25

When does fertilisation occur?

Answer 25

The process occurs after pollination.

Question 26

What type of DIVISION occurs to produce an embryo plant from the diploid zygote formed after fertilisation?

Answer 26

Mitosis

Question 27

What part of the flower develops into a seed?

Answer 27

Ovule

Question 28

Why do seeds need to be dispersed away from the parent plant?

Answer 28

So they don't have to compete for sunlight and water and nutrients.

Question 29

What are the four mechanisms for seed dispersal?

Answer 29

Wind, water, animal and fruit.

Question 30

When do women begin their menstrual cycle?

Answer 30

When they reach puberty.

Question 31

What are the 4 hormones involved with the menstrual cycle?

Answer 31

* Oestrogen * Progesterone * FSH * LH

Question 32

FSH

Answer 32

(Follicle stimulating hormone) | Releases egg

Question 33

LH

Answer 33

Leutinising hormone | -makes egg burst

Question 34

Where is oestrogen and progesterone produced?

Answer 34

Ovary

Question 35

What happens on day one if the menstrual cycle

Answer 35

Period begins

Question 36

What does oestrogen in women cause?

Answer 36

1. ) extra hair on underarms and public area 2. ) hips to widen 3. ) development of breasts 4. ) ovum release and start of periods

Question 37

What does the testosterone in men cause?

Answer 37

1. ) extra hair on face and body 2. ) muscles to develop 3. ) penis and testicles enlarge 4. ) sperm production 5. ) deepening of voice

Question 38

What is made in the testis?

Answer 38

Sperm

Question 39

Where is the scrotum and what does it contain?

Answer 39

Behind the penis and contains festes

Question 40

What is the sperm duct and what does it carry Sperm towards?

Answer 40

Muscular tube that carries sperm from the testes towards the urethra.

Question 41

What do the glands produce?

Answer 41

Liquid that's added to sperm to make semen