Lesson Notes By Weeks and Term v4 - JHS 3
LIFE CYCLE OF ORGANISMS
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
LIFE CYCLE OF ORGANISMS
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
Subject: Science
Class: JHS 3
Term: 1st Term
Week: 8
Grade code: B9.2.2.1.2
Strand code: 2
Sub-strand code: 2
Content standard code: B9.2.2.1
Indicator code: B9.2.2.1.2
Theme: CYCLES
Subtheme: LIFE CYCLE OF ORGANISMS
This page supports the lesson note with a companion video and a short classroom-ready summary.
For class groups and homework, share this lesson page so learners also get the summary, objectives, and full lesson context.
Organisms grow, reproduce and die in cycles. In Ghana, grasshoppers are common in farms, school compounds and bushy areas—especially during the rainy season. Their daily activities (feeding, moving, mating, laying eggs) affect crops, food security, and sometimes even provide food for humans and animals. Understanding the activities of the grasshopper helps learners make good decisions about how to promote beneficial effects and reduce harmful effects on humans and the environment.
A. Meaning of “Life Cycle of an Organism” A life cycle is the series of stages an organism passes through from birth to reproduction and death. For grasshopper, the life cycle is incomplete metamorphosis: Egg → Nymph → Adult
Unlike butterflies (complete metamorphosis: egg → larva → pupa → adult), grasshoppers do not form a pupa.
B. Grasshopper Life Cycle (Brief but clear) Egg stage Female lays eggs in soil (often in pods/egg cases). Eggs stay protected in the ground until conditions (moisture/temperature) are suitable. Nymph stage Nymph looks like a small adult but has no wings and is not sexually mature. Nymph feeds actively and moults (sheds skin) several times to grow. Adult stage Adult has wings, can fly, and can reproduce. Adult continues feeding and may migrate to find food and mates.
Important link to the indicator: The grasshopper’s activities (feeding, moulting, mating, egg-laying, movement) are what drive the life cycle forward.