EXAM QUESTIONS
2017
Q.1
(b) — 10 marks
(i) Explain the term biological control
(ii) Give two examples of biological control
(e) — 10 marks
List three factors that determine the amount of protein required in an animal ration
(f) — 10 marks Outline three ways that the structure of the leaf is suited to photosynthesis
(g) — 10 marks
Give the dental formula of each of the following animals:
(i) Sheep
(ii) Pigs
(h) — 10 marks
(i) Name the nitrogen fixing bacteria found in the root nodules of legumes such as clover
(ii) Name two legumes other than clover Q.6 — 16 marks (c) Explain how the ruminant stomach is suited to the digestion of plants in a grassland sward
Q.8 — 24 marks (b) Phylum Arthropoda contains millions of species. Class Insecta (insects) is the class from this phylum with the greatest agricultural importance.
(i) Outline the principal structural features of insects
(ii) Name any two insect pests in agriculture and describe the damage they cause to named crops or animals
Q.9 — 12 marks
Give a scientific explanation for the following:
(d) The presence of grit in the digestive tract of freerange poultry
2016
Q.1
(c) — 10 marks
Draw a labelled diagram of the fungus Rhizopus (bread mould)
(f) — 10 marks
State the location and function of the following structure in mammals: (i) Villi
(ii) Nephron
(iii) Cervix
Q.8
(a) — 24 marks
The leatherjacket and the wireworm are the larval stages of two important crop pests.
(i) Name the adult stages of 1. The leatherjacket and 2. The wireworm
(ii) Describe the damage caused by each of these pests
(iii) Name the phylum to which they belong
(iv) Describe three structural features of members of this phylum (v) Distinguish fully between complete and incomplete metamorphosis
2015
Q.1
(a) — 10 marks
State to which phylum each of the following belongs: (i) Earthworm
(ii) Greenbottle fly
(iii) Liver fluke
(iv) Sheep
(v) Babesia
(i) Give three functions of blood in the animal body:
2014
Q.3 — Option Two — 48 marks (a) (i) The liver is often referred to as a storage organ. Name two substances that are stored in the liver of the farm animal.
(ii) Name two other locations in the animal body where metabolically useful substances are stored and indicate the substance stored in each case.
(b) Liver fluke (Fasciola hepatica) is an endoparasite that occurs in the liver of some farm animals.
(i) To what phylum does Fasciola hepatica belong? (ii) Give two characteristics of members of this phylum (iii) Draw a diagram of an adult fluke, labelling any three structures
(c) Describe in detail, with the aid of a labelled diagram, the life cycle of the liver fluke
Q.6
(c) — 16 marks
(i) Name any two substances secreted into an animals digestive system and in each case, name the organ that secretes it
(ii) Draw a diagram of the digestive system of a fowl and label four parts not found in mammals
2013
Q.1
(f) — 10 marks
Briefly describe the lifecycle of Babesia, the protozoan that causes red water fever
(h) — 10 marks
Give the precise location and function of the following parts of the mammal:
(i) Hepatic artery
(ii) Hepatic portal vein
2012
Q.1
(b) — 10 marks
Give three characteristics of members of the Class Mammalia
(c) State the precise location and function of each of the following in the body of a farm animal
(i) Alveolus
(ii) Adipose Tissue
(iii) Abomasum
(i) State the function of each of the following:
(i) Xylem
(ii) Meristem
(iii) Palisade