Reproduction

Question 1

Define Testes

Answer 1

produce sperm and the sex hormone testosterones

Question 2

Define Urethra

Answer 2

carries sperm(at different time carries urine) out of the penis

Question 3

Define Scrotum

Answer 3

Holds the testes outside the body and protects them

Question 4

Define Penis

Answer 4

Organ that transfers sperm into the vagina

Question 5

Define Sperm Tube

Answer 5

Carries sperm from testes to urethra

Question 6

Define Prostate Gland

Answer 6

Produces secretion(Semen)that carry and nourish sperm

Question 7

What are male gametes called

Answer 7

sperm

Question 8

What are female gametes called

Answer 8

ova

Question 9

Define Ovaries

Answer 9

produce and release one ovum each month and produce the sex hormone oestrogen

Question 10

Define Oviduct

Answer 10

tubes that carry ova to the uterus and the site of fertilization

Question 11

Define Uterus Lining

Answer 11

inner lining of uterus that fertilized ovum attaches and implants into

Question 12

Define Uterus

Answer 12

organ where the fertilized ovum develops into a baby

Question 13

Define Cervix

Answer 13

neck or opening of uterus

Question 14

Define Vagina

Answer 14

place where sperm are deposited

Question 15

What is mitosis

Answer 15

Process which forms sperms in the testes/division of cells

Question 16

How are sperm cells adapted to their function

Answer 16

Haploid nucleus

mitochondria for energy production

flagellum for swimming

Question 17

Where does fertilization occur

Answer 17

Oviduct(Where an ovum is present)

Question 18

Explain Fertlisation

Answer 18

Fertilization takes place in the oviduct where an haploid sperm and egg nuclei fuse to give a diploid zygote

The zygote divides many times by mitosis as
it travels through the oviduct, on its journey to the uterus, to form a ball of identical cells called
the embryo.

Question 19

What happens in the uterus

Answer 19

The embryo attaches to the lining of the uterus(Implantation)

The embryo differentiates into cells of different types and gradually the
foetus develops a variety of tissues and organs over a period of nine months.

Question 20

How is placenta adapted for diffusion

Answer 20

by having a
large surface area for exchanging dissolved
nutrients, oxygen, carbon dioxide and urea

Question 21

Explain the role of villi

Answer 21

The placenta has villi that increase the surface area for diffusion of
substances between the mother and feotus’s blood.

Question 22

Explain the role of umbilical cord

Answer 22

Substances are carried to or from the foetus in the blood vessels in the umbillical cord

Question 23

Where is testosterone produced

Answer 23

Testes

Question 24

Where is oestrogen produced?

Answer 24

ovaries

Question 25

Reasons for infertility in Women

Answer 25

Lack of Ova

Blocked Oviduct

Hostile vagina

Question 26

Reasons for infertility in Men

Answer 26

Lack of Sperm Production

Erectile dysfunction

Question 27

What is a mechanical methods of contraception

Answer 27

Condom

Question 28

How does a condom work

Answer 28

As a barrier to prevent the passage of sperm and spread of sexually transmitted infections

Question 29

What are chemical methods of contraception

Answer 29

Contraceptive pills

Chemical Implant

Question 30

How do contraceptive pills and implants work

Answer 30

Change hormone levels and stop development of ovum

Question 31

What are surgical ways of contraceptions

Answer 31

Male And Female Sterilization

Question 32

How does Male and Female Sterilization Work

Answer 32

Prevents the passage of sperm and ova

Question 33

Role of Amnotic Fluid

Answer 33

Cushion the foetus