Overview
Define what food substances are. List types of food substances and state what makes a balanced diet is. List types of heterotrophic nutrition and feeding mechanisms in holozoic organisms. (I) List types of mammalian teeth. (ii) Describe the structure of a mammalian tooth. (iii) State the dental formula and adaptations of dentition to mode of nutrition. Describe digestion in Amoeba, Earthworm, Cockroach, grasshopper and birds.
What you'll learn
- Food Substances.
- Feeding mechanisms in holozoic organisms:
- - Filter feeding
- - Deposit feeding
- - Fluid feeding
- (a) Types of food substances.
- (i) Carbohydrates.
- (ii) Fats and Oils
- (iii) Proteins.
- (iv) Mineral salts.
- (v) Vitamins.
- (vi) Water.
- (b) Balanced
- Mammalian teeth:
- (a) The different types of teeth
- (i) Incisors.
- (ii) Canines.
- (iii) Premolars
- (iv) Molars
- (b) Structure of a tooth.
- (c) Dental formula.
- (d) Adaptations of dentition to mode of nutrition.
- Enzymes:
- (a) what are enzymes,
- (b) characteristics of enzymes
- (c) classification of enzymes
- (d) importance of enzymes