Science 5 (Grade 5) Quarter 2 Module 3: Reproduction in Animals - Department of Education PDF

5 Science Quarter 2 – Module 3: Modes of Reproduction in Animals CO_Q2_Science 5_ Module 3  5 Science Quarter 2 – Module 3: Modes of Reproduction in Animals Science – Grade 5 Alternat...

5 Science Quarter 2 – Module 3: Modes of Reproduction in Animals CO_Q2_Science 5_ Module 3  5 Science Quarter 2 – Module 3: Modes of Reproduction in Animals Science – Grade 5 Alternative Delivery Mode Quarter 2 – Module 3: Modes of Reproduction in Animals First Edition, 2020 Republic Act 8293, Section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Published by the Department of Education Secretary: Leonor Magtolis Briones Undersecretary: Diosdado M. San Antonio Development Team of the Module Writers: Diana B. Cinco, Juliet B. Belches, Mary-Joy H. Gallaron Editor: Rex C. Briones, Ronald R. Cabigon Reviewers: Allan Garnace, Rhea A. Alconaba, Genie S. Lacanaria, Marella G. Guial Illustrator: Braderick C. Bollozos Layout Artists: Ismael T. Posion, Bella C. Alberca, Henrissa M. Sible, Ryan R. Tiu, Mary Grace N. Prologo Management Team: Ramir B. Uytico Manuel P. Albaño Arnulfo M. Balane Henrietta T. Managbanag Rosemarie M. Guino Sherlita A. Palma Joy B. Bihag Felicidad T. Espinosa Ryan R. Tiu Ismael T. Posion Rowena T. Vacal Mauricio M. Catan Socorro B. Ausa Printed in the Philippines by ________________________ Department of Education – Regional Office No. VIII Office Address: Government Center, Candahug, Palo, Leyte Telefax: 053 – 323-3156 E-mail Address: [email protected]  Lesson Modes of Reproduction 4 in Animals What I Need to Know This module was designed and written in consideration of you, learners, within the level of your knowledge and capacity to learn new skills in Science 5. It will serve as an aid to learn new ideas through various activities that are contextualized and simplified to suit your level of understanding of the concepts. Every organism exists as the result of reproduction. Reproduction means to reproduce. It is a biological process by which an organism reproduces offspring that are similar to their parents. It enables and ensures the continuity of species generation after generation. Furthermore, it is a fundamental feature of all known as "Life". At the end of the module, you will describe the different modes of reproduction in animals such as butterflies, mosquitoes, frogs, cats, and dogs. Explore and enjoy learning this module. Note: All of your answers to the different activities should be written in a separate sheet of paper. 1 CO_Q2_Science 5_ Module 3  What I Know Directions: Read each of the numbered items carefully, then choose the letter of the correct answer. Write your answer in a separate sheet of paper. 1. When does reproduction take place? A. when offspring makes adult B. when parents make offspring C. when offspring is an exact copy of the adult D. when offspring is an exact opposite of the adult 2. Which organism undergoes the canine “heat” cycle? A. dog B. insect C. parrot D. turtle 3. Which animal reproduces sexually by laying eggs in water? A. butterfly B. cat C. chicken D. frog 4. Which of the following organisms is NOT included in the group? A. frog B. jellyfish C. mollusk D. sea horse 5. What process takes place when a sperm cell fuses with an egg cell? A. combination B. fertilization C. hibernation D. interaction 6. Which of the following looks like its parent-animal when born alive? A. bird B. butterfly C. cockroach D. goat 2 CO_Q2_Science 5_ Module 3 7. Chicks are hatched from eggs. Goats are born alive and look like their parents. Frogs undergo many changes as they grow. What can you infer from these observations? A. all animals are born alive B. all animals are hatched from eggs C. different animals move in different ways D. different animals reproduce in different ways 8. Which is NOT TRUE about reproduction in animals? A. some animals reproduce sexually B. fertilization can happen outside female animal’s body C. all animals reproduce with the same mode of reproduction D. fertilization occurs inside the body for some female animals 9. Fishes/Frogs produce thousands of offspring to ___________. A. produce food for predators B. increase the chance of some surviving C. maintain the population of each species D. make sure that there are lots of brothers and sisters 10. Animals reproduce to ______________. A. make new animals B. get food from its young C. get rid of unhealthy animals D. satisfy their obligation as species 3 CO_Q2_Science 5_ Module 3  What’s In The beginning of a new life is truly a remarkable event. The sight of a butterfly emerging from its pupa, a chick making its way out of the cracked shell or a dog give birth to puppies. The ability of an organism to produce a new life is one of the characteristics that distinguishes living things. This ability is called reproduction. Reproduction is integral for the survival of all animals. They need to produce offspring of their own kind to ensure continuity of their species. Without the process of reproduction, the life of any animal would come to an end. Directions: Read carefully each of the following statements on reproduction. Write TRUE if it is correct and FALSE if it is incorrect. 1. A zygote is formed through fertilization. 2. A new human individual develops from a cell called gamete. 3. Reproduction is to reproduce, or produce new organisms of the same type. 4. Sexual reproduction is making a copy of the organism with a single parent. 5. Reproductive system is the collection of internal and external sex organs in both males and females. 4 CO_Q2_Science 5_ Module 3  What’s New Directions: Read and understand the riddles below. Identify what animal is being described in each riddle. Choose your answer from pool of options in the box. Butterfly Cat Dog Frog Mosquito 1. I lay eggs in water I like to hop around I’m green but I’m not a leaf I have a long tongue but I’m not a giraffe What am I? 2. I start as a caterpillar I go through metamorphosis I feed on nectars but I’m not a bee I’m colorful but I’m not a rainbow What am I? 3. I bite and suck people’s blood I am an insect but I’m not a spider I spread disease but I’m not a sneeze I lay eggs in stagnant water during the breeding cycle What am I? 4. I have legs and tails I am your best friend I use my nose to sniff food I get pregnant when the “heat” cycle period occurs What am I? 5. I have four legs I eat fish if you feed me I have just one, but with eight to spare I ovulate every 1-3 weeks with contact stage What am I? 5 CO_Q2_Science 5_ Module 3  What is It How do animals such as butterflies, frogs, mosquitos, dogs, cats grow in number? Animals grow in number through the process called reproduction. Reproduction is the biological process by which an organism/s reproduce another individual (offspring) that is biologically similar to the organism. All of these animals – the butterflies, frogs, mosquitos, dogs, and cats reproduce sexually. Sexual reproduction takes place when sex cells from two-parent animals (one male and one female) unite to form a new animal through fertilization. The fertilized egg is called a zygote. Examples of animals that undergo sexual reproduction are butterflies, frogs, mosquitos, dogs, and cats. Though all of them reproduce sexually, they have different modes of reproduction. The following are their modes of reproduction: BUTTERFLIES The mating begins when the male butterfly detects a female butterfly releasing pheromones at close range. When the female accepts the male, the male attaches to the female's abdomen, injecting a sperm packet into her stomach that she stores until she decides to lay eggs. They may go on a courtship flight during mating that can last for an hour or more. As the eggs pass down the female butterfly's egg-laying tube, the sperm fertilizes them. Although male butterflies can mate more than once, female butterflies only mate once throughout their lives. About four days a female butterfly lays from 100 to 300 eggs during her life. The eggs hatch about four days after they are laid. When larvae first hatch, they are less than 1 centimeter (cm) and grow to be about 5 cm. 6 CO_Q2_Science 5_ Module 3 FROGS All frogs reproduce sexually. The fertilization in frogs happens outside the female’s body. The female releases her eggs and the male releases his sperms at the same time. The male and female get into a mating posture called amplexus in which the male climbs onto the females back and clasps his forelegs around her middle to make sure that the sperms reach the eggs. They can stay in amplexus for hours or even days as the female releases as few as one or as many as several hundred eggs. Usually, about 6-21 days (average!) after being fertilized, the egg will hatch. Most eggs are found in calm or static waters, to prevent getting too rumbled about in infancy! Some frogs, like the Coast foam-nest tree frog, actually mate in tree branches overlooking static bonds and streams. The gestation period is approximately 33 days, for frogs gave birth 33 days after they were found in amplexus. MOSQUITOES Reproduction by mosquitoes begins with courtship. During mating, the male deposits sperm into the female through a small pouch in her abdomen. The female sucks the blood used to feed the fertilized egg. After mating and sucking down some blood, the female will rest for a few days to lay eggs in water, swamps, or anywhere with sufficient moisture. Male mosquitoes only live for about a week and have no purpose after mating with a female so mosquitoes only mate once. The female mosquito only requires the sex cells of one male for the rest of her life to produce a few batches of eggs. The entire life cycle, from an egg to an adult, takes approximately 8-10 days. Pupae develop into adult flying mosquitoes in 2-3 days. Female mosquitoes lay eggs inside containers holding water. Eggs are ready to hatch from a few days to several months after being laid. 7 CO_Q2_Science 5_ Module 3  Dogs experience heat cycle which lasts DOGS for 3 weeks. It is the period when they ovulate, and can get pregnant which is common every 5-12 months. During the first week (Proestrus cycle) female’s vulva (outer part of their reproductive organ) swells and secretes blood and aromas that attract males. They act moody during this stage to both people and other dogs, swinging from affectionate to "snappy" and seem to like to "tease" the males cruelly: they'll lift their tail to allow a sniff, but will bite the male's head off if he tries to mount. In the second week (Estrus cycle) her vulva will still be swollen, but her vaginal discharge will usually stop having visible blood in it, she will ovulate, and is very ready for reproduction. Lastly, in week 3 (Diestrus cycle) or the last stage of being in heat, the female has already ovulated and is losing interest in reproduction. The length of pregnancy in dogs is 61-65 days average 63 days. This means that about 63 days after a dog is impregnated it will have its litter. Small dogs should always be bred with a male dog that is smaller than the female. CATS Cats can go into heat at any time of year, just like dogs. They stay in heat about 5-15 days but unlike dogs will keep going back into heat every 1-3 weeks until they ovulate and are unlikely to ovulate until there is contact with a male cat. This means that they do not ovulate (pass an egg) unless they are bred. Reproduction begins through the estrous (reproductive) cycle when they reach puberty. They are likely to ovulate until there is contact with a male animal. When in heat they make more noise or meows louder and more frequent. They become much more affectionate toward people, weaves in and out of their legs, rubs against them, shakes her pelvis, and rolls about on the floor, and "flags" her tail. A cat pregnancy last about 63-65 days. So, a cat can have kittens when they are young as 4 months or 6 months old. 8 CO_Q2_Science 5_ Module 3  What’s More Activity 1 Directions: Familiarize the following pictures of animals capable of sexual reproduction. Match the pictures in column A with the corresponding description of reproduction mode in column B. Choose the letter of the correct answer and write it on your answer sheet. Column A Column B 1. A. The female releases her eggs and the male releases his sperms at the same time in a mating posture called amplexus. 2. B. The male deposits sperm into the female through a small pouch in her abdomen. C. The mating begins when the male animal detects a female animal releasing pheromone at a close range. 3. D. The estrous cycle is present when the female animal gets into heat at any time of the year and is likely to ovulate until there is contact with a male animal. 4. E. The female animal experiences a heat period which lasts for 3 weeks. 5. 9 CO_Q2_Science 5_ Module 3 Activity 2 Directions: Fill in the blanks with the name of animals having the mode of reproduction described below. Choose your answer from the word box. butterflies cats dogs frogs mosquitoes turtle 1. Reproduction begins with courtship. During mating, the male deposits sperm into the female through a small pouch in her abdomen. After mating and sucking down some blood, the female will rest for a few days to lay eggs in water, swamps, or anywhere with sufficient moisture. This mode of reproduction happens to _______________. 2. Sexual Reproduction begins when the male and female animal release pheromones or sex stimulant into the environment. As the female lays the eggs they are fertilized by the stored sperm and wrapped in a cocoon. This is how _______________ reproduce. 3. Reproduction begins the stages during the “heat’ cycle. The males are most fertile when fully mature. They act moody during this stage to people and show affectionate to their partner. When the females of this kind of animal ovulate the they get pregnant. This mode of reproduction happens in _______________. 4. Reproduction begins through fertilization. The fertilization happens outside the female’s body. Both male and female releases her eggs and his sperms at the same time. The male climbs onto the female back and clasps his forelegs around her middle which mating posture called amplexus. This is how _______________ reproduce. 5. Reproduction begins through the estrous (reproductive) cycle when it reaches puberty. This animal is likely to ovulate until there is contact with a male animal. The female animal becomes much more affectionate toward people, weaves in and out of their legs, rubs against them, shakes her pelvis, and rolls about on the floor, and "flags" her tail. This mode of reproduction happens in _______________. 10 CO_Q2_Science 5_ Module 3 Activity 3 Directions: Copy the diagram below and write inside the corresponding box a brief description about the mode of reproduction of each of the following animals M O D Butterfly E S O F R Cat E P R O D U C Dog T I O N I N Frog A N I M A L Mosquito S 11 CO_Q2_Science 5_ Module 3  What I Have Learned Directions: Express your understanding of the lesson in this module by supplying the blanks with a word to complete the paragraph. Write your answer in a separate sheet of paper. I learned that animals grow in number through the process called (1)_____________. Reproduction is the biological process by which an organism reproduces an offspring who is biologically similar to the organism. All of these animals – the butterflies, frogs, mosquitos, dogs and cats reproduce (2)_____________. The (3)_____________ takes place when sex cells from two-parent (one male and one female) unite to form a new animal through (4)_____________. The fertilized egg is called (5)_____________. Examples of animals that undergo sexual reproduction are butterflies, frogs, mosquitos, dogs, and cats. Though all of them reproduce sexually, they have different modes of reproduction. What I Can Do Directions: Read and answer the question in each item below. Write your answer in a separate sheet of paper. A. What are some animals found in your community with the same mode of reproduction of dogs, cats, butterflies, frogs, and mosquitos? List at least five (5). Example of Animals with the same mode of reproduction as: Dogs Cats Butterflies Frogs Mosquitos B. If you have a pet in your home, how are you going to take good care of your pregnant pet? 12 CO_Q2_Science 5_ Module 3  Assessment Directions: Read each of the numbered items carefully, then choose the letter of the correct answer. 1. What type of reproduction requires male and female sex cells to unite? A. external fertilization B. internal fertilization C. sexual reproduction D. asexual reproduction 2. Which is NOT TRUE about sexual reproduction in animals? A. it promote differences B. it has only one parent C. the young animals resemble each other D. animals may hatch from eggs or born alive 3. Which of the following is TRUE about the heat cycle in cats? A. cats stay in heat for about 10-30 days B. cats in heat are moody towards people C. cats in heat are quiet and like to lay down D. cats in heat make more noise, louder and more frequent 4. Which of the following DOES NOT mate? A. cat B. pig C. lizard D. starfish 5. What do you call the process formed after the union of a sperm cell and egg cell? A. zygote B. fertilization C. reproduction D. sexual reproduction 6. What will happen if animals will not reproduce? A. population will decrease B. organisms will not survive C. organisms will not improve D. organisms will not be able to adapt to their environment 13 CO_Q2_Science 5_ Module 3 7. How many times do female butterflies mate throughout their lives? A. once B. twice C. thrice D. as many times as they wanted 8. Animals reproduce sexually to ________________. A. make new animals B. get food from its young C. get rid of unhealthy animals D. comply obligation to the species 9. Frogs get into mating posture called amplexus in order to ________________. A. release more eggs in water B. release more sperms for the male frogs C. have better hatching of eggs into tadpoles D. to make sure that the sperms reach the eggs 10. Reproduction is important to living organisms because it ________________. A. controls the body parts B. converts food into nutrients C. collects and removes wastes D. continued the existence of organisms 14 CO_Q2_Science 5_ Module 3  Additional Activities A. Word puzzle Directions: Fill out the crossword puzzle below by identifying the correct term being described by the clues in each item. Write your answer on a separate sheet of paper. 1 5 4 3 2 Across 1. a process of producing of its own kind 4. mating posture of frog to make sure that sperm reach the egg Down 2. new organism produce from two parents 3. an animal that undergo canine “heat” cycle 5. a process when a sperm cell unites with egg cell 15 CO_Q2_Science 5_ Module 3 B. Fill in the blanks Directions: Supply each blank below with the correct word/term to complete each sentence. Choose your answer from the list of options inside the box. Write your answer in a separate sheet of paper. pheromones heat mosquitoes tadpoles ovulate 1. Frogs lay eggs in water and eggs hatch into ______________ that grow into frogs. 2. Male butterfly detects a female butterfly releasing ______________ at close range. 3. Male ______________ usually form large swamps in the air and wait for the females to find them and fly in. 4. Cats get into heat at any time of the year and are likely to ______________ until there is contact with male cat. 5. Mature female dogs have an estrus cycle or ______________ that period of time when they ovulate and receptive to male dogs and get pregnant. 16 CO_Q2_Science 5_ Module 3 CO_Q2_Science 5_ Module 3 17 Additional Activity Assessment What I Can Do A. B. 1. C A. 2. B 1. Horses 1. Reproduction 1. tadpoles 2. Rabbits 3. D 3. Moths 2. Sexually 2. pheromones 4. D 4. Toads 3. Dog 3. mosquitoes 5. Cockroach 5. B Note to the Teacher: 4. Amplexus 4. ovulate 6. A The answers above are just sample answers. 5. Fertilization 5. pregnant 7. A Answers may vary based 8. A on the kind of animals found in the learners’ own 9. D community. 10. D B. (Answer may vary) What I Have Learned What’s More 1. reproduction Activity 1 Activity 2 Activity 3 2. sexually 1. C 1. Mosquito Note to the Teacher: Answer will be based on Activity 2. 3. Sexual reproduction Pls. 2. D 2. Butterfly don’t forget to consider the 4. fertilization learners’ answer based on 3. E 3. Dog their understanding of the 5. zygote lesson. Thank you! 4. A 4. Frog -Answers may vary 5. B 5. Cat What’s New What's In What I Know 1. Frog 1. True 1. B 6. D 2. Butterfly 2. False 2. A 7. D 3. D 8. C 3. True 3. Mosquito 4. A 9. C 4. False 5. B 10. A 4. Dog 5. True 5. Cat Answer Key References Abracia, N, and et.al. 2014. Science in our World. Quezon City: Vibal group, Inc. Hacket, J. et.al. 2016. Science A Closer Look. Quezon City: McGraw-Hill Education and Phoenix Publishing House. Sarte, E. et al. 2016. Science Beyond Borders. Quezon: Vibal group, Inc. "Sexual Reproduction in Animals". 2020. Jagranjosh.Com. Accessed July 27. https://www.jagranjosh.com/general-knowledge/sexual-reproduction-in- animals-1457941400-1. "Why Some Animals Only Get One Offspring, While Others Get Hundreds — Steemit". 2020. Steemit.Com. Accessed July 27. https://steemit.com/ecology/@valth/why-some-animals-only-get-one- offspring-while-others-get-hundreds. "Why Organisms Reproduce The Way They Do". 2020. The Christian Science Monitor. Accessed July 27. https://www.csmonitor.com/Environment/Wildlife/2009/0730/why- organisms-reproduce-the-way-they-do. "Reproduction And Sex In Dogs And Cats". 2020. Animalpetdoctor.Homestead.Com. Accessed September 23. http://animalpetdoctor.homestead.com/reproduction.html. "How Do Butterflies Reproduce?". 2020. Reference.Com. https://www.reference.com/pets-animals/butterflies-reproduce- f291f3be9c5cc24f. "How Frogs Work". 2020. Howstuffworks. Accessed September 23. https://animals.howstuffworks.com/amphibians/frog4.htm. "Mosquito Life Cycle & Breeding | TERRO® Mosquitoes Guide". 2020. Terro.Com. https://www.terro.com/mosquitoes- reproduction#:~:text=Reproduction%20Patterns%20of%20Mosquitoes,materi als%20found%20in%20the%20water. "Reproduction in Mosquitoes". 2020. Animals.Mom.Com. https://animals.mom.com/reproduction-mosquitoes-4694.html. "Pregnancy In Cats And Dogs - Glendale Veterinary Clinic". 2020. Glendalevetclinic.Com. https://www.glendalevetclinic.com/useful- links/8-news-articles/21-pregnancy-in-cats-and-dogs. "Life Cycle Of A Frog". 2020. Allaboutfrogs.Org. http://allaboutfrogs.org/weird/general/cycle.html. "Aedes Aegypti And Ae. Albopictus Mosquito Life Cycles | CDC". 2020. Centers For Disease Control And Prevention. https://www.cdc.gov/mosquitoes/about/life-cycles/aedes.html. 18 CO_Q2_Science 5_ Module 3 "Monarch Butterfly Biology". 2020. Fs.Fed.Us. https://www.fs.fed.us/wildflowers/pollinators/Monarch_Butterfly/biology/i ndex.shtml#:~:text=A%20female%20Monarch%20butterfly%20lays,to%20be %20about%205%20cm. "How Long Are Cats Pregnant? | Petfinder". 2020. Petfinder. https://www.petfinder.com/cats/cat-health/how-long-are-cats-pregnant/. 19 CO_Q2_Science 5_ Module 3 For inquiries or feedback, please write or call: Department of Education –Bureau of Learning Resources (DepEd-BLR) Ground Floor, Bonifacio Bldg., DepEd Complex Meralco Avenue, Pasig City, Philippines 1600 Telefax: (632) 8634-1072;8634-1054;8631-4985 Email Address: [email protected]* [email protected]