This document discusses animal reproduction. It describes the male and female reproductive systems of cows, including testes, ovaries, sperm and eggs. It explains the processes of internal and external fertilization, where fertilization occurs inside or outside the body. It provides examples of animals that exhibit each type of fertilization. The document also briefly discusses asexual reproduction through budding in hydra and flatworms. It notes selective breeding and artificial breeding as methods used by humans to influence animal offspring traits.

1. Animal
Reproduction

2. Vocabulary
• Budding
• External fertilization
• Internal fertilization
• Ovary
• testis

3. Male cow reproductive
system

4. Sexual Reproduction

5. • Testes- are a pair of male
reproductive system and lie in
the scrotum behind the penis.
• Scrotum- behind the penis
• Penis- an organ where the urine
excretion takes place.

6. • Sperms- are called male gametes; travel
out through the penis.

7. Female cow reproductive system

8. • Ovaries- are a pair of female
reproductive system; located at
each side of the lower abdomen.
• Ova – are female gametes produced
by the ovaries.

9. • Fertilization- the fusion of male
and female gametes. ( sperm and
egg)
• The fertilized egg will develop into
a young animal.

10. • Internal fertilization- it occurs in the
body.

11. Examples of animals that carry
out internal fertilization are:
rhinoceroses, dogs, birds,
crocodiles, insects and elephants

14. • External fertilization-occurs outside
the body of a female.

16. Asexual
Reproduction

17. • It occurs in some animals such as:
–Starfish
–Hydra
–Flatworm

18. Hydra reproduces by producing buds.
The process is known as budding.

19. flatworm

20. starfish

21. Breeding of animals

22. • Selective breeding- it allows the
adult animals to reproduce better
quality offspring in the next
generation.

24. Artificial breeding- this method allows
collected sperm cell inseminated to a
female animal artificially.

26. A young "hebra," an offspring from a
female zebra and a male horse, roams
with her mother inside Manila Zoo in
Manila, Philippines, Aug. 19, 2010.

27. Hercules is the most famous
Liger in the World.

28. • Embryo transfer- emrbyos are
collected and transferred to a female
recipients.