Biology1 7B Sexual reproduction in animals Flashcards Preview

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Flashcards in Biology1 7B Sexual reproduction in animals Deck (26):
1

Name this type of cell.

Sperm Cell

2

Name this type of cell.

Egg cell

3

Where are egg cells produced?

Ovaries

4

Where are sperm cells produced?

Testis / Testicles

5

Describe and explain 3 adaptations of a sperm cell.

  • Tail for swimming
  • Streamlined - less energy is expended when swimming
  • Little cytoplasm - allows it to be light and small 
  • Mitochondria - to produce energy for swimming

6

Describe and explain 2 adaptations of an egg cell.

  • Large - easier for cilia to move egg along the oviduct.
  • Large - bigger target for sperm cell
  • Large - contains a food store

7

What process is shown in this picture?

Fertilisation

8

What is implantation?

The embryo implants / sticks to the wall of the uterus.

9

What is the name and role of part A?

Testes / Testicles - produce sperm

10

What is the name and the role of part B?

Sperm Duct - Carry the sperm from the testes to the penis.

11

What is the name and role of part D?

Urethra - Carries urine and sperm out of the body.

12

What is the name and role of part 1?

The vagina is a muscular tube that leads from the cervix to the outside of the woman's body

13

What is the name and role of part 2?

The cervix is a ring of muscle at the lower end of the uterus. It keeps the baby in place while the woman is pregnant.

14

What is the name and role of part 4?

Uterus - The uterus, also called the womb, is a muscular bag with a soft lining. The uterus is where a baby develops until its birth.

15

What is the name and the role of part 7?

Ovary - the two ovaries (one of them is called an ovary) contain hundreds of undeveloped female gametes (sex cells).

16

What is the name and the role of part 5?

Oviduct - tube through which an egg travels from the ovary to the uterus.

17

Name 3 changes that happen to boys when they go through puberty.

  • Voice breaks / changes
  • Grow facial hair
  • Grow pubic hair
  • Penis and testes grow
  • Body odour
  • Grow taller

18

Name 3 changes that happen to girls when they go through puberty.

  • Grow breasts
  • Grow pubic hair
  • Start periods
  • Grow taller

19

Name one substance that passes through the placenta to a developing baby.

  • Food
  • Nutrients
  • Water
  • Oxygen

20

What happens during menstruation?

Blood and uterus lining breaks down and flows out of the vagina.

21

What happens during ovulation?

An egg is released from an ovary.

22

How long does the menstrual cycle usually last?

28 days

23

At which day of the menstrual cycle does ovulation occur?

Day 14

24

Why do animals that reprocuce by external fertilisation produce large numbers of eggs?

  • Many may be eaten.
  • To increase the chance of fertilisation.

25

What is the name of this type of cell? What is their role?

  • Ciliated cell
  • Sweep the egg down the oviduct towards the uterus.

26