The document discusses the modes of reproduction in animals, focusing on both sexual and asexual reproduction. It explains processes such as internal and external fertilization, highlighting differences between animals that reproduce in large versus small numbers. Additionally, it provides activities for students to engage with these concepts, including identifying animals based on reproduction methods and comparing different reproductive strategies.

1. Modes of Reproduction
in Animals
WEEK 3-DAY 1

2. Who has a pet at home?
What is your pet?

3. What is in the
picture?
Does a dog reproduce like
human?

4. Look at the picture:
What is in the
picture?
Does a frog
reproduce like
the dog?

5. Like humans, animals also
need to reproduce. They
have also their own
reproductive system that
makes them able to do such
life processes.

6. Animals have the means to increase their
number through reproduction. This is to
preserve their species and to help in keeping
the natural balance as they interact with
other animals. Different animals have unique
modes of reproduction. It can be noticed that
some animals can reproduce in large
numbers like insects, pigs, dogs, and frogs
while some animals can not. On the other
hand, those big animals generally reproduce
in fewer number.

7. Which animals can reproduce in large number?
What are the animals that reproduce in fewer
number?

8. Reproduction involves the transfer of
characteristics of parents to their offspring
or young. During fertilization (meeting of
egg and sperm cell), genetic materials like
DNA (deoxyribonucleic acid) are shared by
the parents to produce new organism that
may either be possessing unique
characteristics or having an exact copy of
what the parent has.

9. Most of the animals like cats, dogs, butterflies,
frogs, and the like need a male and a female
to reproduce. This is called sexual
reproduction.
Sexual reproduction is a process
of creating offspring with the
participation of a sperm cells
from the male parent and an
egg cells from the female
parent.

10. The modes of reproduction of the following animals:

16. Directions: Read and understand the riddles below.
Identify what animal is being described in each riddle.
Choose your answer from the pool of options in the box.

17. Directions: Read and understand the riddles below.
Identify what animal is being described in each riddle.
Choose your answer from the pool of options in the box.

18. Directions: Read and understand the riddles below.
Identify what animal is being described in each riddle.
Choose your answer from the pool of options in the box.

19. Directions: Read and understand the riddles below.
Identify what animal is being described in each riddle.
Choose your answer from the pool of options in the box.

20. Directions: Read and understand the riddles below.
Identify what animal is being described in each riddle.
Choose your answer from the pool of options in the box.

21. If you have pet at home, how will
you take good care of it?
What process is responsible in creating
an offspring with the participation of a
sperm cells from male parent and an
egg cell from female parent?

22. Directions: Presented below are pictures of animals that are
capable of sexual reproduction. Match the images in column A
with the corresponding modes of reproduction described in
column B. Write the letter of the correct answer on your answer
sheet.

24. Modes of Reproduction
in Animals
WEEK 4-DAY 2

25. Review:
Identify whether the following animals are reproducing
sexually. Write TWO PARENTS if the animal shows sexual
reproduction. Otherwise, write SINGLE PARENT.

27. How do animals reproduce?
Most animals can only produce a
new individual when two parents
are present.

28. SEXUAL REPRODUCTION
takes place when sex
cells from two parent
animals (one male and one
female) unite to form a new
animal.

29. Fertilization
= takes place when sex cells from two
parent animals (one male and one female)
unite to form a new animal.
Two types of Sex Cells or gametes
• Egg cell = for females
• Sperm cell = for male
Zygote = fertilized egg which develops to embryo.
Embryo = the early developmental stage of an animal while it
is in the egg or within the uterus of the mother.

30. Hermaphrodites = both male and female gametes are present in
the same individuals.
Example; earthworms and leeches

31. Internal Fertilization happens when the male animal
releases sperm cells into the body of the female
animal to fertilize the egg cell.
Example: Human, Duck, cats and dogs
External Fertilization occurs outside the bodies of
the parents. The female releases eggs into the water
or attaches them to a plant or rock. The male then
releases sperm cells over the eggs to fertilize them.
Most frogs and fishes undergo external fertilization.
Two Types of Fertilization

32. INTERNAL FERTILIZATION

33. Butterfly fertilizes
by internal
fertilization in which
the sperm and ovum
fuses on the
female's body.

34. External Fertilization

35. Generally the frogs lay
eggs which occur
through external
fertilization. The female
releases the eggs in the
water and the male
releases sperms in water
so that egg and sperm
can meet in the water.

36. Using the table, identify if they reproduce through internal or
external fertilization by checking the correct column.
Name of Animal Type of Fertilization
Internal Fertilization External Fertilization
1. Chicken
2. Turtle
3. Dog
4. Frog
5. Fish

37. Chicken lay eggs which hatch
into chicks a few weeks later.
Is this an example of internal
or external fertilization?
Explain your answer.
What are the similarities of animal and human
reproduction?

38. Name animals that reproduce internally and
externally.
What type of fertilization when the male
animal releases sperm cells into the body of
the female animal to fertilize the egg cell?
How do frogs reproduce?

39. Identify the science concept described in the following
statements.
1. Takes place when sex cells of two parent animals
unite to form a new organism.
(Sexual Fertilization, Sexual Reproduction)
2. Another term for sex cells.
(Embryo, Gametes)
3. Fertilization that happens when sperm cells are
released into the body of the female animal.
(External Fertilization, Internal Fertilization)
4. An example of an animal that undergoes external
fertilization.

40. 5. The sex cell of a male animal
(Egg cell, Sperm Cell)
6. The sex cell of a female animal
(Sperm Cell, Egg Cell)
7. Another term for fertilized egg
(Gametes, Zygotes)
8. Fertilization that takes place when the
union of the sex cells happens outside the
body.
(Internal Fertilization, External Fertilization)

41. “My Animal Scrapbook”
What to do:
1. Look for photos of the following animals and their young.
Dog chicken frog horse eagle
Catcrocodile lizard snake
or any animals
2. Paste their photos in each of the pages of the scrapbook (colored paper or bond paper).
3. Identify how the animals reproduce (Internal or external Fertilization)
4. Put a short caption about the animal.
Due date of submission:
Strictly follow: (No Requirement, No Grade)
Requirement for 2nd Grading in
Science.

42. Requirement
in
Science
“My Animal Scrapbook”
Submitted by:
Student
Grade V-Sapphire
Submitted to:
Mr. Teacher
Science Teacher

43. Modes of Reproduction
in Animals
WEEK 4-DAY 3

44. Review
Identify if it is internal fertilization or external
fertilization.
External Fertilization
Internal Fertilization

45. Identify as many sea creature as you can.
How do some animals reproduce with only one
parent?
Let’s Discuss It!

46. You have learned about how animals can reproduce with
two parents. However, some animals can reproduce with
just one parent.
Look at this picture.
What can you say about the picture?

47. Asexual Reproduction in Animals
Asexual Reproduction does not need one male and
one female parent to reproduce an offspring. A single
parent organism simply makes identical copies of itself.
Methods of Asexual reproduction:
Binary Fission
Budding

48. Asexual Reproduction in Animals
Binary Fission Budding
Occurs when a parent animal
divides itself into two. Each half grows
into a new individual. Binary Fission is
also called Splitting. The sea anemone
is able to reproduce by binary fission.
This allows them to quickly grow
clusters of closely living groups or
colonies. The sea anemone splits its
polyps or body into halves, then it
grow into two new sea anemone.
Happens when an outgrowth of the
parent animal develops into a new animal.
Plants also develop a new plant through
budding. A bulge appears on the parent’s
body, grow into a bud, and eventually
becomes a miniature copy of the parents.
The young continues to grow while still
attached to the parent and eventually
detaches when it is mature enough to
survive by it self.

49. Asexual Reproduction in Animals
Binary Fission
Exam
ples:
Sea Anemones

50. Asexual Reproduction in Animals
Budding
Exam
ples:
Sponges

51. Look at the picture. Hydra can reproduce
asexually by producing
buds on its body which
become miniature copies
of the parent. These buds
detached themselves
when they mature.

52. Advantages and disadvantages of asexual
reproduction in animals.
Advantages
1. The organism does not need a partner for it to
reproduce.
2. The organism develops faster than those
produced in sexual reproduction.
Disadvantages
1. Any disease or negative characteristics of the
parent will be passed onto the offspring since it is
very identical to the parent.

53. Make a Venn Diagram comparing the mode of
reproduction of fish and hydra.

54. How many parents is needed in
asexual reproduction?
In human, does asexual reproduction
applicable? Why?

55. Why is it said that Reproduction in
animals is best described as the
process of producing its own kind.
What are the two types of asexual
reproduction?

56. True or false: Write T if the statement is true and F false if
not.
1. Asexual reproduction is making a copy of the organism
with a single parent.
2. Some tiny animals and marine animals, like sea
anemone, reproduce by binary fission.
3. Reproduction is the ability of a living thing to make
copies of itself.
4. Budding happens when the parent animal divides itself
into two.
5. Fission happens when an outgrowth of the parent
animal develops into new animal.

57. Modes of Reproduction
in Animals
WEEK 4-DAY 4

58. Review:
True or false: Write T if the statement is true and F false if
not.
1. Asexual reproduction is making a copy of the organism
with a single parent.
2. Some tiny animals and marine animals, like sea
anemone, reproduce by binary fission.
3. Reproduction is the ability of a living thing to make
copies of itself.
4. Budding happens when the parent animal divides itself
into two.
5. Fission happens when an outgrowth of the parent
animal develops into new animal.

59. Observe the following pictures:
Which animal were born alive?
Which is hatched from egg?

60. Look at the pictures and describe if it is born alive or
hatched from egg.

62. Animals have different modes of
reproduction. Some animals are egg-
laying while some are born alive.
Egg-laying animals = animals that lay
their eggs to the environment. The
laid eggs by the female are
developed outside her body.

63. Incubation period
= time between the laying of the egg and the
hatching of the young.
Born alive animals = animals that retain and nourish
the fertilized egg inside the body of the female parent.
The fertilized egg develops into an embryo that grows
while receiving the nourishment from the mother
through the placenta.
Gestation = the time between fertilization and birth of
the live young animal.

64. What do you think is the advantage of born
alive animal?
Advantage of an animal that is born alive:
The mother can concentrate on taking care
of only few young. Even in the womb, one
or two young will be able to receive proper
nourishment from the mother.

65. Describe whether the following
animals are born alive or hatched
from an egg.
1.duck
2. pig
3. horse
4. Maya
5. Cat

66. Can you name other animals
that are born alive and hatched
from egg?

67. Describe the difference between
animals that are born alive and
animals that are hatched from eggs.

68. Draw a star if the statement described animals that
born alive and circle if it’s hatched from eggs.
1. Insects develop outside their mother’s body.
2. Elephants are born alive, looking like their mother.
3. It is a mode of reproduction where animals
develop inside their mother’s body.
4. It is a mode of reproduction where animals are
hatch from shell.
5. Unborn monkeys get nourishment from their
mother while they are still developing.

69. Quiz Day
WEEK 5-DAY 5