Reproduction in plants

Question 1

Function of stamen

Answer 1

Male reproductive organ of plant

Question 2

Function of carpel

Answer 2

Female reproductive organs of plant

Question 3

Function of filament

Answer 3

Elevates anther exposing it to wind and pollinators

Question 4

Function of anther

Answer 4

Contains and releases pollen (make gamete)

Question 5

Function of ovary

Answer 5

Produces ovules (female gamete)

Question 6

Function of style

Answer 6

Elevates stigma exposing to wind and pollinaters

Question 7

Function of stigma

Answer 7

Catches pollen from wind and pollinators

Question 8

Function of sepal

Answer 8

Thick protective leaves n outside of bud, peel back after flower blooms

Question 9

Function of receptacle

Answer 9

Connects stem to flower

Question 10

Define pollination

Answer 10

The transfer of pollen from the anther to the stigma

Question 11

Define cross pollintation

Answer 11

Transfer of pollen from anther to the stigma of a flower on another plant of the same species

Question 12

Define self pollination

Answer 12

Transfer of pollen from the anther to the stigma of the same flower or another flower on the same plant

Question 13

Petals in wind vs insect pollinated flowers

Answer 13

Wind= Drab, uncoloured or green
Insect= Bright and colourful

Question 14

Odours in wind vs insect pollinated flowers

Answer 14

Wind= No scent
Insect= To attract pollinators

Question 15

Pollen adaptation in wind vs insect pollinated flowers

Answer 15

Wind= Dry and light- adapted to be carried over large distances, in large quantities
Insect= Sticky/patterened

Question 16

2 Implications of asexual reproduction

Answer 16

1) Less variation of genes
2) Single plant can reproduce

Question 17

Define stem cells

Answer 17

Unspecialised cells that divide by mitosis that becomes specialised

Question 18

Explain what FSH does

Answer 18

1) Stimulates egg maturation in the follicles of the ovary
2) Stimulates the follicles in the ovaries to release oestrogen

Question 19

Germination means

Answer 19

A seed spouting

Question 20

Germination requires 3 factors

Answer 20

1) Suitable temperature (right season)
2) Oxygen (Needed for respiration to produce energy for cell division
3) Water (soften seed)

Question 21

How a protein is made [3]

Answer 21

1) DNA always remains in the nucleus
2) DNA is copied to form mRNA (Messenger RNA) in the nucleus
3) Ribosomes convert the genetic sequences into a chain of amino acids which folds to form a protein