Reproduction (animal and plant) Flashcards Preview

Year 8 Ms Lee 2020 Flashcards > Reproduction (animal and plant) > Flashcards

Flashcards in Reproduction (animal and plant) Deck (43)
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1

In animals, what is the female sex cell?

Egg cells

2

In animals, what is the male sex cell?

Sperm cell

3

In plants, what is the female sex cell?

Ovule

4

In plants, what is the male sex cell?

Pollen grain

5

What is the function of the testicles in males?

They produce millions of sperm cells

6

What is the function of the penis?

1) To pass urine out of the body
2) To pass semen out of the body

7

Where does fertilisation take place in the female body?

Fallopian tube (also called oviduct)

8

What is the function of the ovaries?

They produce egg cells.

9

In which part of the female reproductive system does the foetus develop?

The uterus

10

How long is the gestation period (pregnancy) for humans?

9 months (40 weeks)

11

In general how may days does the menstrual cycle last for?

28 days

12

What is puberty?

Puberty is the time when sex organs begin to release hormones that cause changes in the body. These changes are physical and emotional changes.

13

The changes in puberty are due to the release of ___________.

Hormones

14

Which hormones are released in females during puberty?

Oestrogen (females)
Progesterone (females)

15

Which hormone is released by the male body during puberty?

Testosterone

16

At what age does puberty usually begin for girls?

Females usually start puberty between 8-13 years.

17

At what age does puberty usually begin for boys?

Males usually start puberty between 10-15 years.

18

Name 3 physical changes that occur during male puberty.

- Grow taller and heavier
- Nose and jaw get bigger and face gets longer
- Get more muscles
- Hair and skin can become oily and you may get spots
- Body sweats more
- Hair grows on the face, under the armpits, around the genitals (pubic hair).
- May get more hair on arms, legs and chest.
- Voice gets deeper
- Penis and testicles grow bigger and longer

19

Name 3 physical changes that occur during female puberty.

- Get taller and heavier
- Bones grow bigger and heavier
- Hips get wider and more curvy
- Face changes shape
- Voice gets a little deeper
- Hair grows under the armpits, around the genitals (pubic hair)
- Hair on arms and legs grows darker
- Breasts and nipples get larger
- Ovaries start to release eggs (one per month)
- Periods starts
- Body sweats more

20

What is ovulation?

Ovulation is the release of an egg from the ovary.

21

On what day of the menstrual cycle does ovulation occur?

Day 14

22

If a woman is pregnant, what happens to the lining of the uterus?

The lining of the uterus stays in place to protect the growing foetus.

23

What items may a girl use to protect her clothes from the period?

Tampons, sanitary pads or a menstrual cup

24

What is the placenta?

The placenta is an organ attached to the lining of the womb during pregnancy.

It keeps the unborn baby's blood supply separate from the mother’s blood supply, as well as providing a link between the two.

25

What is the job/function of the placenta?

1) The placenta facilitates the exchange of materials between the mother and foetus
2) The placenta produces hormones that help maintain the pregnancy.

26

What is a zygote?

A fertilised egg cell.

27

When a fertilised egg divides, it starts to form an __________.

Embryo

28

What does the umbilical cord do?

The umbilical cord connects the foetus with the placenta.

29

Which fluid protects the baby in the uterus?

Amniotic fluid.

30

What is the name of the first stage of birth?

Dilation