(a) ldentify specimens O, P, Q, and R.
Specimen O; Specimen P; Specimen Q; Specimen R;
(b) Name three external features you can observe on specimen O
(c) State two functions of each of specimens Q and R to the animal which possesses them.
(d) Mention one common disease associated with specimen O and state one control measure of the disease
(e) Name one parasite which may be found attacking each of specimens P and R.
Explanation
(a) ldentification of specimens:
- O - udder /mammary gland,
- P - Iiver,
- Q - gizzard,
- R - tail of animal with hairs (undressed),
(b) External parts observable on specimen O are:
- teat,
- teat opening (canal),
- hairs (covering the udder muscle/point of attachment to the body,
- point of division into halves (Median ligament).
(c) Uses or functions of specimens Q and R to animals are:
- Specimen Q is used for churning of food and also for grinding food: it is used for the temporary storage of food.
- Specimen R is used for protection/defence, for driving away flies, communication (during stress they wag their tails).
(d) Common diseases associated with specimen O are:
- mastitis,
- agalactia,
Controls Maintaining cleanliness, disinfecting milking equipment, washing or cleaning of udder or teats before or after farm sanitation, use of antibiotics.
(e) Parasites of specimens P and R
- Specimen P - liver fluke,
- Specimen R - tick lice