Subject:- Biology
Topic:- Zones of Marine Habitat
Duration:- 45 minutes
Date:- 26th April, 2020
Behavioural Objectives:-
At the end of the lesson the students should be able to:-
i. Draw a diagram showing the major zones of the marine habitats; and
ii. Write on the distribution of organisms in marine habitats and their adaptive features.
Instructional material(s):-
A flip chat showing different animals and plants that live in the marine habitat.
Introduction:-
Presentation:-
Step 1:-
Major Zones of Marine Habitats.
The major ecological zones of Marine habitats.
Step 2:-
Distribution of Organisms in Marine Habitats and their Adaptive Features.
The organisms in Marine Habitats includes plants and animals
Plants in Marine Habitats.
1. Sea weeds:-
They posses hold fast for attachment dissociation. They have divided leaves, floating devices or air bladder for buoyancy.
2. Algae e.g Sargassum:-
Algae posses chlorophyll for photosynthesis activities, small size or large large surface area for drifting or floating.
3. Planktons e.g diatoms:-
They posses air spaces in their tissues, rhizoids(fake feet) for attachment to rocks and air bladder for buoyancy.
4. Sesuvium:-
Sesuvium posses thick leaves or reduced leaves for water conservation.
Animals In Marine Habitats and their Adaptive Features.
1. Shrimps:-
They posses powerful claws or chelipods for seizing or holding food or prey.
2. Starfish:-
They posses tube feet which enable them to hold on to rock shores, and hard shell which prevents dessication or drying up.
3. Barnacles:-
Barnacles have protective mantle or cilia for feeding, shell which prevents dessication and mantle which retains water.
4. Periwinkles:-
They posses lungs for breathing and foot for attachment.
Evaluation:-
The teacher ask the students questions to ascertain the level of their understanding:-
i. Draw a diagram showing the major zones of the marine habitats; and
ii. Write on the distribution of organisms in marine habitats and their adaptive features.
Home work:-
1. Explain briefly one zone of the marine habitat.
2. Draw two plants and two animals each that lives in the marine habitat.
I remain your biology teacher.
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