7B Sexual reproduction in animals Flashcards

1
Q

Name this type of cell.

A

Sperm Cell

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2
Q

Name this type of cell.

A

Egg cell

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3
Q

Where are egg cells produced?

A

Ovaries

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4
Q

Where are sperm cells produced?

A

Testis / Testicles

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5
Q

Describe and explain 3 adaptations of a sperm cell.

A
  • 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
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6
Q

Describe and explain 2 adaptations of an egg cell.

A
  • Large - easier for cilia to move egg along the oviduct.
  • Large - bigger target for sperm cell
  • Large - contains a food store
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7
Q

What process is shown in this picture?

A

Fertilisation

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8
Q

What is implantation?

A

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

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9
Q

What is the name and role of part A?

A

Testes / Testicles - produce sperm

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10
Q

What is the name and the role of part B?

A

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

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11
Q

What is the name and role of part D?

A

Urethra - Carries urine and sperm out of the body.

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12
Q

What is the name and role of part 1?

A

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

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13
Q

What is the name and role of part 2?

A

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.

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14
Q

What is the name and role of part 4?

A

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.

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15
Q

What is the name and the role of part 7?

A

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

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16
Q

What is the name and the role of part 5?

A

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

17
Q

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

A
  • Voice breaks / changes
  • Grow facial hair
  • Grow pubic hair
  • Penis and testes grow
  • Body odour
  • Grow taller
18
Q

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

A
  • Grow breasts
  • Grow pubic hair
  • Start periods
  • Grow taller
19
Q

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

A
  • Food
  • Nutrients
  • Water
  • Oxygen
20
Q

What happens during menstruation?

A

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

21
Q

What happens during ovulation?

A

An egg is released from an ovary.

22
Q

How long does the menstrual cycle usually last?

A

28 days

23
Q

At which day of the menstrual cycle does ovulation occur?

A

Day 14

24
Q

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

A
  • Many may be eaten.
  • To increase the chance of fertilisation.
25
Q

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

A
  • Ciliated cell
  • Sweep the egg down the oviduct towards the uterus.
26
Q
A