flowering plants

Question 1

what do plants produce?

Answer 1

pollen

Question 2

what is the male gamete?

Answer 2

the nucleus inside the pollen

Question 3

what is the male part of the flower called?

Answer 3

the stamen

Question 4

what is the female part of the flower called?

Answer 4

the stigma

Question 5

what are the 2 methods of pollination?

Answer 5

the pollen is transferred to insects
pollen is transferred by the wind

Question 6

where is pollen produced?

Answer 6

in the anther

Question 7

what is the ova?

Answer 7

the gamete produced in the ovules found in the ovary within the female part of the flower

Question 8

what is cross- pollination?

Answer 8

the transfer of pollen from the anther of one flower to the stigma of another flower on another part

Question 9

what is self- pollination?

Answer 9

when the pollen doesn’t reach a different plant

Question 10

what does the sepal do?

Answer 10

protects the unopened flower

Question 11

what do the petals do?

Answer 11

they are brightly coloured in insect-pollinated flowers to attract insects

Question 12

what does the anther do?

Answer 12

produces and releases the male sex cell

Question 13

what is the stigma?

Answer 13

top of the female part of the flower which collects pollen grains

Question 14

what is the ovary?

Answer 14

produces the female sex cell (ovum)

Question 15

what is the ovule?

Answer 15

contains the female sex cell

Question 16

why do insects often visit flowers?

Answer 16

to collect nectar which provides the insects with energy

Question 17

what happens as the insect enters the flower in search of nectar?

Answer 17

it brushes against the anthers which deposits sticky pollen onto the insect’s body

Question 18

what happens if the insect visits another flower?

Answer 18

it may brush against the stigma- depositing some of the pollen it collected from the first flower- resulting in pollination

Question 19

features of an insect pollinated flower: petals?

Answer 19

large and brightly coloured to attract insects

Question 20

features of an insect pollinated flower: scent and nectar?

Answer 20

scent is present- entices insects to visit the flower

Question 21

features of an insect pollinated flower: number of pollen grains?

Answer 21

moderate- insects transfer pollen grains efficiently with a high chance of successful pollination

Question 22

features of an insect pollinated flower: pollen grains?

Answer 22

larger, sticky and or spiky to attach to insects and be carried away

Question 23

features of an insect pollinated flower: anthers?

Answer 23

inside flower, stiff and firmly attached to brush against insects

Question 24

features of an insect pollinated flower: stigma?

Answer 24

inside flower, sticky so pollen grains stick to it when an insect brushes past

Question 25

how does pollination occur in wind- pollinating flowers?

Answer 25

when ripe, the anthers open and shed their pollen into the open air
the pollen is either then blown by the wind until it lands on the stigma of a plant by the same species- resulting in pollination

Question 26

features of a wind pollinated flower: petals?

Answer 26

small and dull in colour- often green or brown

Question 27

features of a wind pollinated flower: scent and nectar?

Answer 27

absent scent- no need to waste energy producing scent and nectar as there is no need to attract insects

Question 28

feature of a wind pollinated flower: number of pollen grains?

Answer 28

large amounts- most pollen grains are not transferred to another flower so the more produced, the better the chance of some successful pollination occurring

Question 29

features of a wind pollinated flower: pollen grains?

Answer 29

smooth, small and light so they are easily blown by the wind

Question 30

features of a wind pollinated flower: anthers?

Answer 30

outside flower, swinging loose on long filaments to release pollen grains easily

Question 31

features of a wind pollinated flower: stigma?

Answer 31

outside flower , feathery to catch drifting pollen grains

Question 32

why do most plants carry out pollination via cross- pollination?

Answer 32

it increases the genetic variation in the offspring