1. In the space below make a labelled diagram to show the structure of a typical Bacteriophage as revealed by the electron microscope.

2. The diagram below shows the structure of a typical bacterium as revealed by the electron microscope.

a. Name the structures labelled A, B, C, D and E.

b. What is the function of the structure labeled A?

c. Give four reasons why the above organism is described as prokaryotic.

3. The description below refers to the three examples of algae, Chlamydomonas, Spirogyra and Fucus , of the phylum Chlorophyta and Phaeophyta in the Kingdom Protoctista. Identify the algae correctly.i) A multicellular green alga with a filamentous body and spiral-shaped

chloroplasts.

ii) A marine intertidal alga with body differentiated into thallus, holdfast, stipe and lamina.

iii) biflagellated unicellular organism having a big cup-shaped chloroplast.

4. The diagrams below show the structures of a Chlamydomonas and a Spirogyra.

a) Name the structures labelled A, B, C, D, and E and state their functions.A:________________________________

B:________________________________

C:________________________________

D:________________________________

E:________________________________

b) Compare the two kinds of algae. What are the common structures found in both of them?

5. a. The body of Paramecium is fixed in shape. What structure is responsible for this?

b. For each of the following structure of the Paramecium, state the function:

A. Contractile vacuole:

B. Macronucleus:

C. Micronucleus:

D. Cilia:

6. a. The diagram below is a protoctist.

Name the structures labeled A, B, C, D, and E.A:

B:

C:

D:

E:

b. Give two reasons why the above protoctist is classified into the phylum of Zoomastigina?

7. a. Fungi were traditionally classified in the plant kingdom but biologists today accorded them into a separate kingdom? Why?

b. In fungi, what is the advantage of having cell walls made up of chitin?

8. Fill in the missing words in the spaces below:Mucor’s body structure consists of threadlike strings of cells called ______________, which form a tangled mass called a ______________. The hyphae are _______________ and ________________. ________________ act as the reproductive structures within which _________________ are formed.

9. a. The life cycle of a fern consists of regular alternation generations. Which generation is more dominant in ferns?

b. What do you call the gametophyte generation of a fern?

c. Name the three parts that make up the sporophyte.

10.

a. The young leaves of Dryopteris sp. shown in figure 1 are coiled up. What do you call this structure?

b. Name the structure that protects the young leaves from frost and dehydration?

c. Explain what do you understand by circinate virnation?