Plant reproduction

Question 1

Function of petals/ nectarines

Answer 1

attracts insects for pollination

Question 2

function of stamen

Answer 2

male reproductive parts (anther, Filament)

Question 3

function of anther

Answer 3

(top bit of stamen) produces pollengrains

Question 4

function of filament

Answer 4

supports the anther

Question 5

function of carpel

Answer 5

Female reproductive part- contains Ovary

Question 6

function of stigma

Answer 6

female part of the plant where pollen lands

Question 7

function of style

Answer 7

supports the stigma and is the tube which links male and female gametes

Question 8

ovule

Answer 8

contains female gametes

Question 9

function of pollen

Answer 9

produced by anther- each matured pollen grain contains a tube cell consisting of a tube nucleus and male gamete

Question 10

definition of pollination

Answer 10

pollen grains are transferred from the stamen to the stigma

Question 11

difference between wind and insect pollinated plants

Answer 11

insect- petals are coloured to attract plants
flowers are scented and sweet
nectaries are to attract insects

Question 12

difference between wind and insect pollinated plants

Answer 12

wind- pollen is light and smooth so it travels easily and does not clump together

• pollen produced in great quantities
• anthers loosely attached and dangle out

Question 13

what is pollination?

Answer 13

the movement of pollen grains from the anther of one flower to the stigma of another

Question 14

advantage of cross pollination?

Answer 14

genetic diversity which keeps it resistant to disease

Question 15

why is it important that seeds are widely dispersed?

Answer 15

decreases competition

Question 16

describe a way seeds can be dispersed:

Answer 16

1- wind dandelions get parachuted to a new destination as they have fluff heads which allows them to fly away

Question 17

describe a way seeds can be dispersed:

Answer 17

2- animal burdock seeds have hook which can easily latch on to for example dog’s fur which will then distribute them to a new destination

Question 18

describe a way seeds can be dispersed:

Answer 18

3- explosion pea shoots and poppy seeds explode and fly out, allowing

Question 19

describe what happens after the pollen grain lands on the stigma

Answer 19

a pollen tube grows from the stigma down into the style into the ovary where it enters the micropyle. the ovule produces a. seed and the ovary becomes a fruit.