W3-SCIENCE-1.grade 5 second quarter 2024

science

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:

11. 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.

12. 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.

13. 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.

14. 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.

15. 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.

16. 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?

17. 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.

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

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

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

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

22. 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.

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

24. 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

25. INTERNAL FERTILIZATION

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

27. External Fertilization

28. 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.

29. 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

30. 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?

31. 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?

32. 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. (dog, fish)

33. 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)

34. “My Animal Scrapbook” What to do: 1. Look for photos of the following animals and their young. Dog chicken frog horse eagle Cat crocodile 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.

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

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

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

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

39. 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?

40. 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

41. 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.

42. Asexual Reproduction in Animals Binary Fission Examples: Sea Anemones

43. Asexual Reproduction in Animals Budding Examples: Sponges

44. 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.

45. 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.

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

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

48. 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?

49. 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.

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

51. 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.

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

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

54. 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.

55. 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.

56. 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.

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

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

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

60. 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.

61. Quiz Day WEEK 5-DAY 5