One type of feed given to each animal:

1. (a)

(i) One type of feed given to each animal:

• A (Cow): Grass
• B (Rabbit): Hay
• C (Chicken): Grains

(ii) One nutrient from the types of feed mentioned in (i):

• From grass (for cow): Carbohydrates
• From hay (for rabbit): Fiber
• From grains (for chicken): Protein

(iii) One function each of the nutrient named in (ii):

• Carbohydrates: Provide energy for metabolic activities.
• Fiber: Aids in digestion and maintains gut health.
• Protein: Essential for growth and repair of tissues.

(iv) The animal in Fig. 1(a) that can be classified as a ruminant is A (Cow).

1. (b)

(i) The parts labelled I, II, III, IV and V are:

• I: Larynx
• II: Trachea
• III: Bronchus
• IV: Bronchiole
• V: Alveoli

(ii) One function each of the parts labelled II, III and V:

• II (Trachea): Carries air from the larynx to the bronchi.
• III (Bronchus): Channels air from the trachea into the lungs.
• V (Alveoli): Site of gas exchange between air and blood.

(iii) The most important gas during the process of respiration that is:

• (α) used by the body: Oxygen
• (β) brought out from the body: Carbon dioxide