Reproduction

Question 1

What do you mean by sexual Reproduction?

Answer 1

Reproduce
re / pro / duce
again / forth / bring
“ making more of a cell or an organism”

Sexual reproduction is a process used by animals to produce offspring ( like children in humans) from gametes (sperm and egg cells).

Sexual reproduction requires one male and female animal.

Question 2

What happens during sexual reproduction?

Answer 2

During Sexual reproduction, sperm cell nucleus joins with egg cell nucleus to fertilise the egg.

Question 3

What is a zygote?

Answer 3

The fertilised egg cell is called the zygote and soon the cell will divide and produce more cells.

Question 4

Embryo?

Answer 4

Once the fertilised egg cell (zygote) divide and produce more cells, up to 2 months, the growing offspring is called an Embryo.
An embryo will grow to about 2cm in length.

Question 5

Foetus?

Answer 5

From 2 to 9 months, the offspring is referred to as a foetus.
The foetus is recognisable as a human and will grow to an average length of 51 cm before birth.
Once born, the offspring is called a baby.

Question 6

Female reproductive system

Answer 6

The overall function of the female reproductive system is to produce offspring.
The female reproductive system consists of 5 different organs.
- Vagina
- Cervix ( is a ring of muscle at the entrance to the uterus) - this muscle is contracted so as to hold the foetus in the uterus during pregnancy.
- Uterus ( is an organ made of muscle and epithelial tissue) - the zygote ( fertilised egg) will develop into an embryo and then a foetus inside the Uterus.
- Ovary ( egg cells are produced in and released from the ovaries)
- Oviduct ( the released eggs from the ovaries travel down the oviduct) - the human female reproductive system has 2 ovaries and they to which releases an egg every month.

Question 7

Male reproductive system

Answer 7

• The overall function of the male reproductive system is to produce and ejaculate sperm.
• Penis, Urethra, Sperm ducts, Glands, Testis - testes(pl.)
  Function:
• Sperm cells are produced in the testes.
• The sperm cells then travels to the sperm duct where they are mixed with a fluid called Semen that are produced by the glands.
• The semen then travels through the sperm ducts into the Urethra and leaves the Penis.
• average ejaculation consists of around 250 million sperm cells and leaves the penis at the speed of around 30mph