reproduction

Question 1

reproduction

Answer 1

the process by which members of a species produce offspring

Question 2

sexual reproduction

Answer 2

involves fusion of 2 sex cells (gametes)

Question 3

asexual reproduction

Answer 3

not involve sex cells
- offspring are genetically identical to one another and parent

Question 4

how many human diploid and haploid cells

Answer 4

diploid = 46 chromosomes
has double set of chromosomes
haploid= 23 chromosomes
single set of chromosomes

Question 5

anther

Answer 5

produces pollen which contains male gametes

Question 6

petal

Answer 6

brightly coloured which attracts insects

Question 7

stigma

Answer 7

where pollen grains attach

Question 8

style

Answer 8

where pollen tubes grow

Question 9

ovary

Answer 9

produces ovules which contain female gametes

Question 10

sepal

Answer 10

protect unopened flower

Question 11

filament

Answer 11

hold anther in position for pollination

Question 12

stamen

Answer 12

collective for male parts of flower

Question 13

pollination

Answer 13

transfer of pollen grains from anther to stigma

Question 14

fertilisation

Answer 14

fusion of nucleus of male gamer (haploid) with the nucleus of female games (haploid) to form zygote (diploid) which divides to form embryo

Question 15

male reproductive system:
1. testes
2. sperm duct
3. penis
4. urethra

Answer 15

1. produces sperm
2. carries sperm from testes to penis
3. inserted into vagina during copulation and deposits sperm
4. tube where sperm leaves body

Question 16

female reproductive system:
1. ovary
2. oviduct
3. uterus
4. vagina

Answer 16

1. produces ova (female gametes)
2. carries ova from ovary to uterus and is site of fertiliasation
3. embryo implants here and develop into fetus
4. penis inserted during copulation, exit canal for birth

Question 17

stages between fertilisation and implantation

Answer 17

1. ovum released from ovary
2. sperm swim towards ovum
3. 1 sperm fertilise 1 ovum
4. zygote divides
5. cells continue to divide to form blastocyst
6. blastocyst divides and moves in uterus
7. blastocyst implants in wall of uterus
8. implantation of blastocyst completed