Second Term Examination Lesson Note for Week 2
Term: Second Term /Term 2
Week : Week 2
Class : Primary 5 / Basic 5 / Grade 5
Subject : Basic Science and Technology
Topic : The Reproduction in Plant
Duration : 40 minutes
Previous Knowledge : Learners have been taught meaning of joint and muscles and types.
- Reference Materials : Basic Science and Technology for Primary Schools, Book 5.
- Lagos State Unified Scheme of work for Primary Schools, (Primary 4 – 6).
- Online Resources
Instructional Materials : Charts showing parts of a flower.
Behavioural Objectives : By the end of the lesson, learners will be able to :
i. Define reproduction in plants
ii. Identify parts of a flower.
iii. Explain pollination, types and agents if pollination
Content:
Reproduction in Plants
Reproduction is the ability of living things to produce young ones of their kind. Reproduction is important for continuity of life.
Most plants develop from their seeds, which comes from the flower. Flowers contain both male and female parts. Seeds are formed from the union of the male and female reproductive parts. Many plants can also produce young ones without seeds. For example, cassava and sugar cane are planted from a cutting of the parent plant.
Parts of a flower
Flowers are specialised structures of plants that are adapted for sexual reproduction.
The flowers contain the reproductive organs of the plant and through their colours, scent or shape and offering to insects and birds, they also attract pollinators. Their function is also to make gametes and ensure that fertilisation takes place.
The diagram below shows the structure of a flower.
- The outer part of a flower has four or five sepals. The sepals usually have green colour and they protect the flower while it is a bud.
- The petals are also four or five brightly coloured. The petals attract insects to the flower for pollination and to protect the stamens and pistil.
- The anther produces pollen grains
- The Style is the pollen tubes that carry the male gametes to the ovary.
- The Ovary is the floral part that contains the ovules (eggs).
The reproductive organs of a typical flower.
The reproductive organ in a flowering plant is the flower. The parts of a flower are divided into two:
i. The male part: The stamens are the male parts of the flower. It is made up of anther and filament. The anthers contain pollen grains, which contain the male gametes.
ii. The female part: The pistil or carpel is the female part of the flower. Most of the pistil consists of an ovary. inside the ovary are many ovules which contains the female gametes. The top of the ovary is short style with a stigma at the tip. The function of the stigma is to catch pollen grains.
Flowers that contain both male and female sex organs are called a hermaphrodite or a bisexual flower. Flowers that contain only male or female sex organs, are called unisexual flowers.
Presentation Steps:
Step I: The teacher revises the previous topic with the learners to arouse their interest by asking questions.
Step II: He/ She introduces the new topic to the learners by defining reproduction in plant
Step III: Identify part of a flower and state functions of each parts listed.
Step IV: identify the male and female parts of a flower.
Evaluation: The teacher reviews the lesson by asking the following questions :
1. Name the reproductive parts of a flower.
2. The stamens consist of _______________ and _____________________.
3. The male reproductive parts of a flower is called _______________________.
4. The _______________________ is the female parts of a flower.
5. The leaves of the sepals are ________________ in colour while that of the petals are ____________________.
6. Give the names of part labelled
Conclusion: At the end of the lesson, learners were able to answer the questions correctly.
Assignment:
Draw and label the parts of a flower.
Good job you.