Reproductive System in Plants

Reproductive System in Plants

Week 5

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Like animals, plants are also capable of reproduction. They reproduce in many ways. In general, plants exhibits both sexual and asexual reproduction.

This lesson is intended for you to describe the plant reproductive system responsible for the process, specifically, sexual reproduction. The different activities that you will encounter in this lesson will lead you to understand how different parts of the plants functions in producing their own kind. 

Learning Task 1:

 Study the pictures. Name the plant. Identify the part of the plants used for reproduction. 

Multiple Choice

What part of the plant is used for reproduction.

• seed

• roots

• stem

Multiple Choice

What part of the plant is used for reproduction.

• seed

• roots

• stem

Multiple Choice

What part of the plant is used for reproduction.

• seed

• roots

• stem

Open Ended

What part of plant seeds are developed?

Flower

Flower is an accessory organ of the plants used in sexual reproduction. Flowers can be classified as complete and incomplete.

Open Ended

Now, look at your surrounding. What do you think are the plants that shows sexual reproduction?

Flowers are parts that indicate a plant is producing seeds. When seeds are produced, it means the plant performs sexual reproduction. 

Learning Task 2: 

 All plants that bear flowers are called flowering plants. Flowers are useful in the process of fertilization among plants. In the next slide, is a figure showing the parts of a flower involve in fertilization. Study the figure and label the parts of a flower.

Standards when watching a video presentation:

• 1. Mute your mic.

• 2. Give your full attention.

• 3. No chatting in the chat box.

• 4. Take notes.

Sexual Reproduction

Sexual reproduction among plants happens through the transfer of pollen grains from the anther into the stigma. The anther serves as the male part while the stigma functions as the female part. This process is called pollination. There are two types of pollination, self–pollination and cross-pollination.

Multiple Select

In self-pollination, what part of the flower are pollen grains located?

• petal

• anther

• stigma

• sepal

Multiple Select

In cross-pollination, what part of the flower are pollen grains located?

• petal

• anther

• stigma

• sepal

Self-pollination happens when the pollen grain are transferred from the anther of a flower to the stigma of another flower in the same plant. Cross-pollination is a process that requires two individual plants of the same species. 

Self-pollination and cross pollination are examples of pollen grain transfer through insects. When pollination is caused by wind and other non-living factors, it is called abiotic pollination.

Fertilization occurs when swelling tube-like pollen grains goes into the stigma through the style to reach the ovary. The process is completed at the moment the sperm is released from the tube to fertilize the egg cell in the ovule. 

 Fertilized ovules get matured to develop into seeds. On the other hand, the ovary enlarges and develop to become the fruit. Ripening of fruits signals that the seeds are already prepared to be planted and produce new plants.

Sexual reproduction through pollination is possible with the help of pollinators. Pollinators are agents for the transfer of pollen grains from a flower to another flower of either same plant or different plants of the same species.

Open Ended

Give an example of pollinator.

Performance Task

Learning Task 4:

Name 3 plants . Identify the pollinators by completing the chart below. Illustrate how pollination takes place in each flower. Draw this in your notebook. 

Thank you for listening.