Lesson Notes By Weeks and Term - Senior Secondary 1

Reproduction

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TERM – 3RD TERM

WEEK EIGHT

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Biology

Topic: REPRODUCTION

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

  1. Explains reproduction
  2. Identify the two types of Reproduction
  3. Discuss reproduction in lower organisms
  4. Identify the structural Adaptation of various organisms

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers,

demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher introduces reproduction to the students

 

Students pay

attention

STEP 2

EXPLANATION

Teacher Identify and explain the two types of reproduction

Students pay

attention and

participate

 

STEP 3

DEMONSTRATIO

N

Teacher discusses the Reproduction of lower organisms and the structural Adaptation of

Organisms

 

Students pay

attention and

participate

STEP 4

NOTE TAKING

The teacher writes a summarized

note on the board

 

The students

copy the note in

their books

 

NOTE

REPRODUCTION

Reproduction is the biological process by which new individuals of the same species are produced, ensuring the continuity of life. It can occur through two main methods:

  1. Sexual Reproduction: Involves the fusion of gametes (sperm and egg) from two parent organisms. This process results in offspring with a combination of genetic material from both parents, contributing to genetic diversity. Sexual reproduction is common in many plants and animals, including humans.
  2. Asexual Reproduction: Involves the creation of offspring without the involvement of gametes. The offspring are genetically identical or very similar to the single parent. Asexual reproduction is observed in various organisms, such as bacteria, plants, and some animals.

Reproduction in Lower Organisms

  1. Amoeba

       

   - Asexual Reproduction: Through binary fission, where the cell divides into two identical daughter cells.

  1. Paramecium:

       

   - Asexual Reproduction: Through transverse binary fission, leading to the formation of two daughter cells with different sizes.

  1. Earthworm:

       

   - Sexual Reproduction: Earthworms are hermaphrodites, and reproduction involves copulation, exchange of sperm, and the formation of cocoons where fertilization occurs.

Structural Adaptations in Various Organisms:

  1. Fish:

   - Fins and Scales: Adaptations for streamlined movement and protection.

  1. Tadpole (Frog's Larvae):

   - Tail and Gills: Adaptations for aquatic life before metamorphosis into an adult frog.

  1. Toad:

   - Warty Skin: Provides protection and helps retain moisture.

  1. Lizard:

   - Scaly Skin and Limbs: Adaptations for terrestrial life, with some species capable of climbing or burrowing.

  1. Snail:

   - Shell: Provides protection and helps retain moisture.

  1. Crab:

   - Hard Exoskeleton: Provides protection and support.

  1. Prawn:

   -Segmented Body and Appendages: Adaptations for swimming and capturing prey.

  1. Bird:

   - Feathers and Hollow Bones: Adaptations for flight.

EVALUATION: 1. identify parts of the periodic table containing metals

  1. Mention five characteristics of metals.
  2. Identify 3 compound of metals.
  3. Enumerate four uses of sodium.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively