Specific ObjectivesBy the end of the topic, the learner should be able to:
a) Define nutrition and state its importance in living organisms.
b) Differentiate various modes of feeding.
c) Describe photosynthesis and show its importance in nature.
d) Explain how the leaf is adapted to photosynthesis.
e) Explain the factors affecting photosynthesis.
f) Distinguish between carbohydrates,proteins and lipids.
g) State the importance of various chemical compounds in plants and animals.
h) Explain the properties and functions of enzymes.
i) Relate various types of teeth in mammals to their feeding habits.
j) Differentiate between omnivorous, carnivorous and herbivorous modes of feeding.
k) Relate the structures of the mammalian (human) alimentary canal to their functions.
l) Explain the role of enzymes in digestion in a mammal (human).
m) Explain the factors that determine energy requirements in humans.
•Carry out experiments on factors affecting photosynthesis.
•Observe distribution of stomata from plant adapted to different habitats.
•Carry out experiments on food tests.
•Carry out experiments on factors affecting enzymatic activities.
•Investigate the presence of enzymes in living tissues (plants and animals) such as catalase.
•Observe, identify, draw and label different types of mammalian teeth.
•Carry out dissection of a small mammal to observe digestive system and associated organs (demonstration).