This document discusses animal reproduction, including both sexual and asexual reproduction. It defines reproduction as the way organisms continue their species through mating and producing offspring. Sexual reproduction involves the fusion of male and female gametes, while asexual reproduction requires only one parent and produces genetically identical clones. The document outlines different types of asexual reproduction like binary fission, fragmentation, budding, and parthenogenesis. It also describes the mechanics of fertilization, whether internally like oviparity, viviparity, and ovoiviparity, or externally.

1. ANIMAL
REPRODCUTION
KIP AIZA F. GABAWA, MAED - SCIENCE

2. Pre - test
1. What type of reproduction involves the fusion of gametes or sex cells?
a. Sexual b. Asexual c. both A & B d. None of the above
2. What type of reproduction produces an offspring which genetically
identical to its parent cell?
a. Sexual b. Asexual c. both A & B d. None of the above
3. Sexual reproduction leads to _____ in organisms?
a. Similarities b. variation c. duplication c. resemblanc
4. What is the ideal duration of pregnancy among humans?
a. 32 weeks b. 34 weeks c. 36 weeks d. 38 week
5.
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3. ANIMAL
REPRODUCTIO
N
BY: KIP AIZA F. GABAWA,
MAED-SCIE

4. WHAT IS
REPRODUCTIO
N?

5. Is one of the key
survivals of a
species – it is a
way to continue
life

6. The male and
female
organisms will
mate and
produce
offspring.

7. WAYS OF HOW
REPRESENTATI
VE ANIMALS
REPRODUCE

8. 1. Sexual & Asexual
8

9. 1. Sexual & Asexual
9

10. Sexual reproduction
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In sexual reproduction, a male and female
gamete is needed to produce the offspring. In
most instances, there is male and female
organisms to produce the gametes but, this
isn’t always the case. Finding a partner for
sexual animals can sometimes prove difficult,
and so, an adaptive mechanism and
evolutionary solution, some animal exhibit
HERMAPHRODITISM.

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HERMAPHRODITISM this is when an
organism has both the male and female
reproductive systems. This common
among sessile (stationary animals). In
hermaphroditism, the organism may or
may not have a partner for fertilization to
occur.

12. Asexual reproduction
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Asexual reproduction is a mode of reproduction
in which a new offspring is produced by a single
parent. The new individuals produced are genetically
and physically identical to each other, i.e., they are
the clones of their parents.
Asexual reproduction is observed in both
multicellular and unicellular organisms. This process
does not involve any kind of gamete fusion and there
won’t be any change in the number of chromosomes
either. It will inherit the same genes as the parent,
except for some cases where there is a chance of a
rare mutation occurring.

13. TYPES OF
ASEXUAL
REPRODUCTION
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14. 1. BINARY FISSION
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occurs in single-
celled organisms. It
is when a parent cell
divides itself into two
equal parts and
creates offspring.
This type of
reproduction is like
cloning

15. 2. FRAGMENTATION
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occurs when an
organism breaks a
part of itself into a
fragment, and the
fragment develops
into a new organism.
Ex. Starfish & acoel
flatworms

16. 3. BUDDING
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budding happens
when a parent organism
grows a bud attached to
the body. When the bud is
developed it will detach
itself from the parent and
form a new organism.
Ex. Yeast & Jellyfish

17. 4. PARTHENOGENESIS
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occurs when the
embryo of an
organism can grow
and develop without
fertilization.
Ex. Some species of
ants & honeybees

18. MECHANICS OF
FERTILIZATION
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19. MECHANICS OF
FERTILIZATION
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20. 2 TYPES OF
FERTILIZATION

21. 1. INTERNAL
FERTILIZATION
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occurs when the fusion of gametes is inside
the female body.
2. EXTERNAL
FERTILIZATION
occurs when the fusion of gametes is outside
the female body.

22. 3 TYPES OF
INTERNAL
FERTILIZATION

23. 1. OVIPARITY
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the female has
fertilized eggs laid outside
its body. The young will
get nourishment from its
yolk and will be protected
by the external covering
of the egg.
Ex. chickens

24. 2. VIVIPARITY
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most common in
mammals, the offspring
develops within the
female and is nourished
by the mother’s blood in
the placenta.
Ex. Bears

25. 3. OVOVIVIPARITY
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like oviparity,
ovoviviparity has fertilized
eggs that nourished the
young from its yolk. The
key difference between
them is when the
ovoviviparous animals
only lay the eggs when
they are ready to hatch.
Ex. Great Whale Sharks

26. Thank you