REPRODUCTION - ANIMALS

Question 1

Name this type of cell

Answer 1

sperm cell

Question 2

Name this type of cell

Answer 2

egg cell

Question 3

Where are egg cells produced?

Answer 3

ovaries

Question 4

Where are sperm cells produced?

Answer 4

Testis / Testicles

Question 5

Describe 3 adaptations of a sperm cell to help it swim to the egg cell

Answer 5

1. tail
2. streamlined - uses less energy to swim
3. mitochondria - to produce energy to swim

Question 6

why egg cells are so large

Answer 6

1. bigger target for sperm cell
2. contains a food store

Question 7

What reproductive process is shown?

Answer 7

fertilisation

Question 8

What is implantation?

Answer 8

embryo implants = sticks to the wall of the uterus

Question 9

What is the name & role of A?

Answer 9

testes

produce sperm cells

Question 10

What is the name & role of B?

Answer 10

sperm duct

carries sperm from testes to the penis

Question 11

What is the name & role of D?

Answer 11

urethra

carries urine & sperm out of the body

Question 12

What is the name & role of 1?

Answer 12

vagina

where the penis enters the female to

release sperm cells during sex

Question 13

What is the name & role of 2?

Answer 13

cervix

a ring of muscle to keep baby in place

Question 14

What is the name & role of 4?

Answer 14

uterus / womb

a muscular bag where baby develops until birth

Question 15

What is the name & the role of 7?

Answer 15

two ovaries

contain undeveloped egg cells

one egg cell is released monthly

Question 16

What is the name & role of 5?

Answer 16

two oviducts

tubes that carry the monthly egg cell to the uterus

Question 17

Name 8 physical changes that happen to boys during puberty

Answer 17

1. voice breaks / changes
2. penis and testes grow (produce sperm cells)
3. grow facial hair
4. shoulders widen
5. grow pubic and underarm hair
6. grow taller
7. body odour
8. emotional changes

Question 18

Name 7 physical changes that happen to girls during puberty

Answer 18

1. grow breasts
2. start periods (ovaries release egg cells)
3. grow pubic and underarm hair
4. grow taller
5. hips widen
6. body odour
7. emotional changes

Question 19

Name 4 substances that pass through the placenta to feed a developing baby

Answer 19

• food
• nutrients
• water
• O₂

Question 20

What happens during menstruation?

Answer 20

uterus lining breaks down and flows out of the vagina

Question 21

What happens during ovulation?

Answer 21

an ovary releases one egg cell

Question 22

How long is the menstrual cycle?

Answer 22

28 days

Question 23

On which day of the menstrual cycle is ovulation (egg release)?

Answer 23

day 14 (half way through)

Question 24

Name this cell & its role?

Answer 24

ciliated cell

sweeps the egg down the oviduct towards the uterus

Question 25

what causes puberty?

Answer 25

sex hormones: chemical messengers that travel around your body in your blood and trigger all the changes

Question 26

what are gametes?

Answer 26

reproductive cells = egg cells and sperm cells

Question 28

what component of the egg cell and sperm cell join at fertilisation

Answer 28

nucleus