science

Question 1

ovulation

Answer 1

the process where a mature egg is released from an ovary, ready to be fertilised

Question 2

fertilisation

Answer 2

process where the sperm and the ovum fuse in one of the oviducts and form a zygote

Question 3

cell division

Answer 3

process where new cells are formed for growth, repair and replacement in the body

Question 4

implantation

Answer 4

the attachment of a fertilised egg to the wall of the uterus at the start of pregnancy

Question 5

placenta

Answer 5

an organ in the uterus which nourishes and provides vital nutrients for the foetus via the umbilical cord

Question 6

what things does the placenta exchange?

Answer 6

mother provides:
oxygen
water
vitamins
drugs (some)
viruses (almost all)
nutrients

baby:
carbon dioxide
water
waste products

Question 7

uterus

Answer 7

if the egg is fertilised, it implants on the wall of the uterus and develops into a foetus

Question 8

cervix

Answer 8

neck or opening of the uterus

Question 9

vagina

Answer 9

connects cervix to outside of the body

Question 10

ovum

Answer 10

female sex cell

Question 11

ovary

Answer 11

after puberty, ovum is released from the ovary once every 28 days

Question 12

oviduct

Answer 12

carries the ovum from the ovary to the uterus - egg is fertilised there

Question 13

sperm

Answer 13

male sex cell

Question 14

testes

Answer 14

produce sperm

Question 15

scrotum

Answer 15

skin which holds the testes

Question 16

urethra

Answer 16

tube through which urine leaves the body

Question 17

gland

Answer 17

provides nutrients to the sperm

Question 18

pollination

Answer 18

the act of transferring pollen grains from the male anther of a flower to the female stigma

Question 19

sepal

Answer 19

protect & support flower

Question 20

anther

Answer 20

produces male sex cells (pollen)

Question 21

stigma

Answer 21

traps pollen

Question 22

ovary

Answer 22

produces ovules

Question 23

style

Answer 23

where the pollen tube grows down to ovules

Question 24

insect pollination

Answer 24

• bright petals to attract insects
• scented with nectar
• moderate amount of pollen
• sticky pollen grains
  -anthers are stiff and firmly attached
• stigma inside to get pollen grains stuck

Question 25

wind pollination

Answer 25

skibaiden

Question 26

when the forces are balanced

Answer 26

object is still
moving objects continue to move at the same speed.