Why spiders and scorpions are placed in the same class?

1. They have three pairs of legs 
2. They have a pair of wings 
3. They have a pair of chelicera 
4. They have three body parts 
5. They have two pairs of antennae

  A phylum consisting of species with jointed appendages and exoskeleton is known as

1.  Chordata 
2. Anelida 
3. Arthropoda
4. Platyhelminthesis 
5. Nematoda.

In which Phylum do filarial worms belong?

1. Annelida
2. Nematoda
3. Arthopoda
4. Platyhelminthes
5. Chordata

Which of the following parasitic organisms is typicall ectoparasite?

1.  Tick
2.  Tapeworm
3.  Plasmodium
4.  Round worm
5.  Lichen.

The laboratory technician investigated the faeces of a patient and found organisms with flattened segmented bodies. What is the name of the organisms?

1. Tapeworms 
2. Roundworms
3. Liver flukes 
4. Filarial worms
5. Planaria

Many people believe that insects are harmful to man hence they find poisonous chemicals to eradicate them. Giving examples, explain four ways in which insects are useful to man. (10 marks)

 Reptiles are organisms whose body temperature is affected by environmental temperature. Briefly explain three ways that help reptile to survive in different weather conditions.

(a) List any three characteristics of the Phylum Arthropoda.

(i) Mention the Classes of the Phylum Arthropoda

(ii) Name one representative member for each Class you have mentioned in 6(b)(i).

Match the responses in List B with the phrases in List A by writing the letter of the correct response from List B beside the item number of List   A in your answer booklet. Each choice in column B may be used once, more than once or not at all.

(a) Identify by using common name, two types of flat­worm found in the alimentary canal of a living organism.

(b) To which kingdom does organism in (a) belong?

Explain the structure of tilapia fish by considering the following features:

(a)Nature of skeleton.

(b)Types of scales.

(c)Position of mouth.

(d)Tail fin.