Reproduction

Question 1

What part of a plant develops into a fruit?

Answer 1

the ovary

Question 2

what part of a plant develops into a seed?

Answer 2

the ovule

Question 3

what fertilised part of a plant eventually develops into an embryo plant?

Answer 3

the zygote

Question 4

How many chromosomes in a haploid cell?

Answer 4

Only one set of chromosomes - half the full number

Question 5

How many chromosomes in a diploid cell?

Answer 5

full set of chromosomes

Question 6

differences between sexual and asexual reproduction?

Answer 6

Sexual reproduction requires two gametes; asexual reproduction does not
offspring produced through sexual reproduction is similar to both parent organisms but not identical, whereas organisms produced through asexual reproduction are genetically identical
Sexual reproduction increases genetic diversity, asexual reproduction causes reduced genetic diversity

Question 7

what is fertilisation?

Answer 7

the fusion of a male and a female gamete cell to form a zygote that undergoes cell division and eventually develops into an embryo.

Question 8

Difference in petals between insect and wind pollinated flowers?

Answer 8

insect-pollinated flowers have big, bright and colorful petals to attract insects
wind-pollinated flowers do not have petals

Question 9

Difference in stigmas between insect and wind pollinated flowers?

Answer 9

insect-pollinated: sticky and positioned in the middle of the corolla
wind-pollinated: feathery to increase surface area chances of catching pollen blown from wind

Question 10

Difference in anthers between insect and wind pollinated flowers?

Answer 10

insect-pollinated: enclosed in the corolla, close to the stigma
wind-pollinated: exposed, hanging out of the flower to increase chances of wind blowing pollen away

Question 11

Describe the event that lead to seed formation?

Answer 11

The growth of the pollen tube is stimulated by the sweet sugary solution in the stigma. Digestive enzymes produced by the pollen tube then cause the pollen tube to grow down the stigma, style and ovary and enter through the micropyle. The nucleus of the pollen fuses with the nucleus of the ovule to form a zygote. The wall of the ovule hardens and becomes the seed coat. Ovary grows to become fruit.