reproduction in flowering plants

Question 1

8 characteristics of living things?

Answer 1

movement
respiration
sensitivity
growth
reproduction
excretion
nutrition
control

Question 2

what is asexual reproduction?

Answer 2

only one cell is required
cells in one part of the body decide my mitosis (cell division) and then break off from the parent to form a new organism
all offspring’s are genetically identical

Question 3

what is sexual reproduction?

Answer 3

two gametes (sex cells) needed
2 cells involved (male and female)
each gamete has half set of chromosomes (23)
the offspring is not genetically identical

Question 4

what is fertilisation?

Answer 4

male gamete move to the female gamete and fuse together

Question 5

what is the new cell formed called, after fertilisation?

Answer 5

zygote

Question 6

what is pollination?

Answer 6

transfer of pollen from the male anther of a plant to the female stigma of a plant

Question 7

two types of pollination?

Answer 7

self pollination
cross pollination

Question 8

two methods of pollination?

Answer 8

wind
animals (birds/bees)

Question 9

describe wind pollinated flowers?

Answer 9

they are different in structure because they do not have to attract insects but do need to be exposed to the wind

Question 10

describe insect pollinated flowers

Answer 10

they are adapted to attracts insects to them to enable transfer of pollen

Question 11

pollen in wind pollinated flower

Answer 11

pollen grains are very small, smooth and light to carry in wind
lots of them (large numbers)

Question 12

pollen in insect pollinated flowers

Answer 12

large, sticky grains with barbs for hooking onto insect fur

Question 13

stamen in wind pollinated flower

Answer 13

stamens are outside so that they are exposed to the wind so that pollen can be blown away

Question 14

stamens/anther in insect pollinated flower

Answer 14

stamens inside so insect has to make contact positioned to run pollen onto insects

Question 15

stigma in wind pollinated flowers

Answer 15

stigma outside so exposed to the wind
stigma are feathery to catch pollen carried by wind

Question 16

stigma in insect pollinated flower

Answer 16

inside the flower to make sure of contact
+ sticky to collect the pollen

Question 17

nectar in wind pollinated flower

Answer 17

no scent or nectar as no need to attract insects

Question 18

nectar in insect pollinated flower

Answer 18

nectar and scent present as a reward

Question 19

petals in wind pollinated flower

Answer 19

petals are small and green as there is no need to attract insects

Question 20

petals in insect pollinated flower

Answer 20

large petals, brightly coloured to attract insects