sexual reproduction in plants

Question 1

do flowers contain male and female gametes

Answer 1

yes

Question 2

where are the female gametes found

Answer 2

in the carpel

Question 3

what does the carpel consist of

Answer 3

ovary
style
stigma

Question 4

where are the male gametes found

Answer 4

in the stamen

Question 5

what does the stamen consist of

Answer 5

anther
filament

Question 6

stigma

Answer 6

end bit that the pollen grains attach to

Question 7

style

Answer 7

rod like section that supports the stigma

Question 8

ovary

Answer 8

contains female gametes inside ovules

Question 9

anther

Answer 9

contains pollen grains that produce the male gametes (ovum)

Question 10

filament

Answer 10

the stalk that supports the anther

Question 11

pollination is the

Answer 11

transfer of pollen from an anther to a stigma, so that the male gametes can fertilise with the female gametes

Question 12

cross pollination

Answer 12

a type of sexual reproduction where pollen is transferred from the anther of one plant to the stigma of another

Question 13

what helps cross pollinating plants to pollinate

Answer 13

insects or the wind

Question 14

how can plants be adapted for insect pollination (4)

Answer 14

• brightly coloured petals to attract insects
• scented flowers and nectaries to attract insects
• sticky pollen grains that stick to insects as they go from plant to plant
• stigma also sticky so any pollen grain picked up by an insect on other plants will stick to the stigma

Question 15

adaptations of plants for wind pollination

Answer 15

• The anthers and stigmas of wind pollinated flowers hang outside the flower so that:
  
  • pollen can easily be
    blown away by the
    wind
  • pollen can easily be
    caught by the stigmas
    of other
    flowers
• large feathery stigma to catch pollen as its carried past by the wind. also usually hangs outside the flower