Animal Reproduction

2. 1. Identify the different ways of how
representative animals reproduce;
2. Conclude how reproduction provides
continuity of species’ existence;
3. Cite ways to take advantages of
reproduction as a key to survival of
animals.
.

3. The class will be divided into 2. Each group
will decode the given numbers to their
corresponding letters of the alphabet, then
arrange the letters to reveal unifying
themes in life. Lastly, one representative of
the group will describe the term revealed.

4. L C L
E
C L L
E
25
Y O C
O E G
E
15 15
E O L
C O Y
G

5. 14 15 9 20 12 21 15 5 22
18
15 23 20 8
N I T
O E
U
L O V
E O L
V U I
T O N
A A P
A O
T
T I N D
16 20 20 15 14
A A P
D T T
A I O N
G W T
O R H
G O W
R T H

6. The group will be divided into two and will recall
some organisms around in their locality. Within
3 minutes, each group will list down at least 10
organisms that can be found in their place.

7. Can you describe how these organisms begin?
1. A close-up view of
the tiny and active
Catanduanes nilesi
subspecies of Grey-
backed Tailorbird.

8. Can you describe how these organisms begin?
2.The water buffalo or
domestic buffalo is a large
bovid originating in the Indian
subcontinent, Southeast Asia,
and China. Asian water
buffalo, Philippines

9. Can you describe how these organisms begin?
3. The giant Philippine frog, large
swamp frog. or Mindanao fanged
frog (Limnonectes magnus) is a
species of frog in the family
Dicroglossidae. It is endemic to the
Philippines.

10. Can you describe how these organisms begin?
4. Leatherbacks have the widest
distribution of all sea turtle species.
They are found throughout the
Pacific, Atlantic, and Indian Oceans

11. Can you describe how these organisms begin?
5. Staphylococcus aureus is a
Gram-positive, round-shaped
bacterium, a member of the
Firmicutes. It is a usual member of
the body's microbiota, frequently
found in the upper respiratory tract
and skin.

13. According to the UN,
there are about 360,000
babies born every day
in the world.
Reproduction is one of
the key survivals of a
species – it is a way to
continue life.

14. means to multiply its kind.
It is a biological process by
which an organism
reproduces an offspring
that is biologically similar to
the organism.

15. a male and female gamete
is needed in order to
produce an offspring. In
most instances, there is a
male and female organism
to produce the gametes.

16. is the fusion of gametes (male-sperm and Female - ovum)
Internal fertilization
occurs when the fusion
of gametes is inside the
female body, while an
external fertilization is
the opposite where
fusion of gametes is
outside the female
body.

17. the female has fertilized
eggs laid outside its body
Ex. Chickens
1. OVIPARITY

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

19. animals only lay the eggs
when they are ready to
hatch. Ex. Great White
Sharks
3. OVOVIVIPARITY

20. organism has both male
and female gametes are
present in the same
individuals
e.g. earthworms, leeches

21. the fusion of the egg cell and
sperm cell does not occur;
reproduction is mainly
through mitosis, which
creates a parent clone. This
type of reproduction is
practiced widely by unicellular
organisms.

22. occurs in single celled
organisms. It is when a
parent cell divides itself
into two equal parts and
create an offspring.
Ex. Bacteria
1. Binary Fission

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

24. happens when a parent
organism grows a bud
attached to its body.
Ex. Yeast and Jellyfish
3. Budding

25. occurs when the embryo
of an organism can grow
and develop without
fertilization.
Ex. Some species of ants
& Honeybees.
4. Parthenogenesis

26. TYPES ADVANTAGES DISADVANTAGES
SEXUAL REPRODUCTION - The population is less likely to
catch diseases all at once.
- Has more chances of survival
- Has genetic variation.
- Needs a partner to reproduce.
- Takes more time to reproduce.
ASEXUAL REPRODUCTION - Only one parent organism is
needed to reproduce.
- Faster than sexual reproduction.
- Has less surviving chances due to
the lack of genetic variation.
- Population is more likely to catch
diseases at the same time.

28. The animal kingdom has a food
chain, with apex predators at the top
and weak, easily hunted animals at
the bottom. Apex predators survive
by hunting and feeding on other
animals, while weaker animals are
easily hunted, affecting their
offspring's reproductive success.
The food chain's connections
maintain progeny.

29. The environment of animals is
crucial for their health, and rising
temperatures are causing dwindling
populations and premature death of
some species. Warm water
conditions, such as in fish, and
melting glaciers and ice caps, are
also causing malnutrition in polar
bears.

30. Human activities, including pollution,
hunting, and deforestation, have led
to species extinction, despite efforts
to reverse these effects and save
endangered species.

31. 1. Pick an animal and draw his ID picture in the box.
2. Fill in the rest of the information by checking the right
choice and filling out the blanks!
3. Animal and Species: _____________
4. ( ) Asexual ( ) Sexual
5. *if your animal is asexual, please specify what type:
______________
6. ( ) Internal Fertilization ( ) External Fertilization
7. *if you checked internal fertilization, please specify
what type: ______________
8. Place where this animal preferably gives
birth:__________________

32. The group will be divided into 3 and will suggest
how the assigned factors can’t be a hindrance in the
continuation of reproduction of the animals. Choose
1 animal as an example as each group explains its
reproduction.
GROUP 1 PREDATION
GROUP 2 ENVIRONMENT
GROUP 3 HUMAN INTERACTION

33. SCORE DESCRIPTION
4 Suggested ways are complete and
explained excellently in a way that
relates to the topic. The conclusions
are related. Strong suggestions are
made for future purposes.
3 Although a conclusion is drawn, it is
not well explained. The conclusions
are weakly related to the topic.
Suggestions are not feasible or not
related.
2 Conclusions are not
not related and no suggestions that
can be used for future purposes.
1 No conclusion was apparent OR
important details were overlooked.

34. Read the following statements. Then
write your answer in a ¼ sheet of
paper.

35. 1. A house lizard is ________, in terms of
mechanism of reproduction.
a. oviparous
b. viviparous
c. ovoviviparous
d. asexual

36. 2. Earthworms are _____ in nature.
a. asexual
b. hermaphrodites
c. none of the above
d. all of the above

37. 3. Which of the following is NOT a form of
asexual reproduction?
a. fission
b. budding
c. fertilization
d. fragmentation

38. 4. Which of the following is true about
sexual reproduction?
a. genetically identical offspring are produced
b. only one parent is involved
c. it puts the animal at an evolutionary
disadvantage in terms of variation
d. it involves the exchange of genetic material
between two individuals

39. 5. How do hermaphrodites reproduce?
a. asexually
b. by regeneration
c. both sexually and asexually.
d. sexually

40. ANSWERS:
1. D
2. A
3. C
4. D
5. A

41. ASSIGNMENT:
Read the following situation and answer it in your notebook.
Let us see how well our knowledge truly understand these ideas through
essay writing.
1. Why do you think is asexual reproduction present among animals?
2. Is it possible for humans to undergo asexual reproduction? Why?
3. Why is reproduction important for species survival?
4. What makes hermaphrodites unique organisms?
5. What is the difference between oviparity and ovoviviparity?