Department Of Education Science 5

Department of EducationScience 5Modes of Reproduction inFlowering and Non-Flowering PlantsSecond Quarter - Module 5Divina Gracia P. GagalaWriterMa. Helen P. EyasValidatorAbigail M. De LiosReynante H. EspeletaArmida S. OblinadaQuality Assurance TeamSchools Division Office – Muntinlupa CityStudent Center for Life Skills Bldg., Centennial Ave., Brgy. Tunasan, Muntinlupa City(02) 8805-9935 / (02) 8805-9940

This Supplementary Learning Module (SleM) focuses on the modes ofreproduction in flowering and non-flowering plants. It provides you self-learningactivities that will further develop your understanding on the lesson.Most Essential Learning Competencies:Week 5: Describe the different modes of reproduction in flowering and nonflowering plants such as moss, fern, mongo, and others (S5LT-llg-7)1. Describe the mode of reproduction of a fern & moss.2. Describe the mode of reproduction of a mongo & corn kernel3. Experiment on seed germination (mongo/corn)Directions: Choose the letter of the correct answer.1. What do you call the reproduction of plants where the male and female partsof the flowers of the plants are involved?A. asexualC. pollinationB. buddingD. sexual2. When is fertilization happens in plants?A. One sperm cell unites with the egg cell from the ovule to form a fertilizedeggB. Two sperm cells unite with an egg cell from the ovule to form a fertilizedeggC. One sperm cell unites with two egg cells from the ovule to form a fertilizedeggD. Two sperm cells unite with an two egg cells from the ovule to form afertilized egg3. What type of pollination happens when the pollen grains from the anther aretransferred to the stigma of a flower that belongs to the same plant?A. across- pollinationC. cross- pollinationB. auto- pollinationD. self- pollination4. Which part of the flower become the seed?A. ovum and antherC. ovum and ovuleB. ovum and ovaryD. ovum and style5. What happens during cross- pollination?A. The pollen grains transfer from the anther to the stigma of the sameplant’s flower.B. The pollen grains transfer from the anther to the stigma of another plantof the different kind2

C. The pollen grains transfer from the anther to the stigma of a flower thatbelongs to another plant but of the same kind.D. None of the above6. You observed that the ovary of a wilted flower is becoming bigger. What doesthis show?A. The ovary is going to drop.B. The ovary is going to break.C. A seed is developing inside the ovary.D. More ovules are being produced in the ovary.7. Which is TRUE about asexual reproduction?A. Only plants use asexual reproduction.B. All organisms are asexual reproduction.C. There is only one parent involved in asexual reproduction.D. There are at least two parents involved in asexual reproduction.8. Which is the tiny part of a seed that can grow can grow into a new plant?A. EmbryoC. OvuleB. OvaryD. Pistil9. Which of the following sentences does NOT describe the mongo seed?A. It has two cotyledons.B. It develops true leavesC. It has only one cotyledon.D. Germination begins when they absorb water.10. Which of the following sentences best describes fern plant?A. Ferns reproduce by the spores.B. Ferns come from different spores.C. Ferns grow flowers and have seeds.D. Ferns grow mostly in sunny places.Directions: Encircle the letter of the best answer.1. Which of the following best describes the importance of flowers to plants?A. They become fruits.B. They protect the ovules.C. They make the plants attractive.D. They aid in the plant’s reproduction by enticing outside pollinators.2. Which of the following parts of the flowers are needed in reproduction?A. petals and sepalsC. stamen and pistilB. pistil and petalD. stamen and sepal3. How do flowering plants like rose and gumamela reproduce?A. asexuallyC. both sexually and asexuallyB. sexuallyD. Nether sexually nor asexually4. Which of the following sentences does NOT describe the process of sexualreproduction in plants?A. Reproduction is done with the stems, roots, or leaves of the plants.3

B. Fertilization happens and the ovules grow into seeds within the fruit.C. The transfer of the male gametes to the female ovules is called pollination.D. Sexual reproduction in plants involves the production of male and femalegametes.5. Which of the following group of plants are NOT considered as examples ofasexual reproduction?A. Ginger, onion, garlicC. Banana, bamboo, turmericB. Camote, carrot, potatoesD. Avocado, papaya, mango treeReproduction in plants varies in Flowering and non-flowering plants.Flowering plants produce flowers and bear seeds to reproduce their kinds. Nonflowering plants do not produce flowers but use seed or tiny structures in someplants that can be used to reproduced called spores.Non-Flowering PlantsFerns have leaves, roots, and stems but do not haveseeds and flowers. Water and food can travel to all parts of theseplants. Ferns grow best in warm, shady places where the soil isdamp and fertile. Their leaves are popularly known as fronds.On the underside of each frond, dark cases called sori (Figure2) are found. Sori contains many tiny spores. These are usuallyblown away by the wind when they mature. When this happens,reproduction occurs.Figure 1 FernThe developing fern leaves are usually curled at the top and resemble thecurved head of a violin. Because of their appearance, these developing leaves arecalled fiddleheads (Figure 3). As these fiddleheads mature, they uncurl until theyreach their maximum size.Dreamstime.comFigure 3. FiddleheadsFigure 2 Sori4

Mosses are very small, soft, green plants that grow closetogether like a carpet on the ground, on rocks, or trees. It ispopularly known as “lumot” in tagalog. Mosses grow from spores.Just like the ferns, mosses produce spore cases. But these sporecases grow at the top of a moss plant. When the spore casesburst open, some spores fall to the ground. Other spores may beblown by the wind. If the spores fall in a moist, fertile place, newmosses may grow.Flowering PlantsFigure 4. MossesMost flowering plants reproduce sexually through the process of pollination.It can be possible when a sperm cell fertilizes an egg cell. Pollination occurs whenpollen grains drop on the stigma, they produce a tubelike structure called pollentube. The pollen tube extends down the style and into the ovary. When the pollentube reaches the ovules, sperm cell releases and fertilization takes place. Asuccessful fertilization happens when the ovary swollen and the petals of the flowerswilted and dry, then seeds are produced.The most common type of pollination takes place when the pollen grains inthe anther of one flower is transferred to the stigma of another flower in the sameplant or of a flower in another plant of the same kind. This is called crosspollination.Although it seldom happen, the pollen grains from the anther of a flower cantransfer to the stigma of that same flower. This is called self- pollination.Parts of the SeedThe hilum shows where the seed is attached tothe ovary. The seed coat is the outer covering of theseed. Inside the seed is the embryo or young plant.The cotyledon, serves as the nourishing part of theseed. It provides nutrients needed by a young plantuntil leaves are developed and able to make theirfood.Mongo or mung bean is an example of a seedwith two cotyledons. Seed with two cotyledons arecalled dicotyledons or dicot.A corn seed has only one cotyledon. A seedwith only one cotelydon is called a monocotyledon or monocot.Figure 5Activity 1: Watch Me BabyMaterials: 10-15 pieces of mongo seeds, a small container or can,paper tissue, a small amount of waterProcedures:1. Arrange the paper tissue in an empty can or small container.2. Arrange the mongo seeds in the container3. Add a small amount of water.5

4. Observe what happened to the seeds for seven days. Describe the growthof the plant each day.5. Record your observation in your notebook following the format below.DayDateObservation1234567Guide Questions:1. Describe the seeds before soaking them.2. What have you observed on the seeds after two days? after three days?after four days?3. Where do the seeds get their food?Activity 2: Describe Me Grow!Procedures:1. Study the cycle of fern below.2. Describe how each stage has developed into another fern.3. Answer the guide questions below.Figure 6. The Life Cycle of a Fern6

Guide Questions:1. What part of the fern helps them to reproduce?2. What mode of reproduction does it show, sexual or asexual? Why do yousay?Activity 3: Arrange MeProcedures:1. Arrange the sequence of the following pictures as to how theseeds are formed by writing numbers 1-6.2. Answer the guide questions below.Guide Questions:1. What kind of pollination took place in the activity?2. Which number in the activity does the new plant grow?3. Explain how fertilization takes place in the flower? Some plants reproduce without seeds. Sexual reproduction happens inspore-bearing plants such as mosses and ferns.In mosses, the leafy plants produce two branches, male and female. Thefemale branches produce egg cells while the male branches produce egg cellswhile the male branches produce sperm cells.When a sperm reaches an egg in the sac, the two cells join into a single cell ina process called fertilization. This is called sexual fertilization.Mosses undergo both sexual and asexual reproduction.In asexual reproduction, spores are produced and when released and land ondamp ground can grow into leafy moss plants.Ferns, like mosses, are spore-producing plants. Mature ferns produce fertilefronds with spore casing called sori on the underside of their leaves.When it rains, sperms released from the male organs swim towards the femaleorgans leading to the growing of young fern plants. Sexual reproduction takesplace when the sperm cells unite with egg cells in the female organs. Thefertilized eggs grow into new leafy fern plants.Pollination occurs when the pollen grains of one flower reaches andfertilized the stigma of another flower. 7

When it rains, sperms released from the male organs swim towards the femaleorgans leading to the growing of young fern plants. Sexual reproduction takesplace when the sperm cells unite with egg cells in the female organs. Thefertilized eggs grow into new leafy fern plants. Pollination occurs when the pollen grains of one flower reaches andfertilized the stigma of another flower. Cross Pollination is the transfer of pollen grains from the anther of a flowerto the stigma of another flower that belongs to another plant but of the samekind. It is the most common form of pollination.Self- pollination is the transfer of pollen grains from the anther to the stigmaof the same flower or of a different flower that belongs to the same plant.Cotyledons are modified leaves.Dicotyledons or dicots are plants with two cotyledons.Monocotyledons or monocots are plants with only one cotyledon.Directions: Match the items in Column B with the description in Column A.AB1. Small plants that look like a softA. Fern2. Many of these plants are usedB. Moss3.C. Mongogreen carpet that covers rocks.4.5.6.7.8.9.as decorations.It is the production of new offspringin plants which can be accomplishedby sexual or asexual.It is a seed with one cotyledon.It is a seed with two cotyledons.The type of reproduction where themale and female parts of the flowersare involved.It is the transfer of pollen grains fromthe anther of a flower to the stigma ofanother flower that belongs to anotherplant but of then same kind.It is the transfer of pollen grains from theanther to the stigma of the same floweror a different flower that belongs to thesame plant.It contains the female gametes or sexcells called ovum.10.It is a swollen structure at the end ofthe style.8D. CornE. Plants reproductionF. Cross- pollinationG. SexualH. ovuleI. Self-pollinationJ. Stigma