REPUBLIC OF CAMEROON THE UNIVERSITY OF BAMENDA

Peace-Work-Fatherland

P. O. BOX 39 Bambili

School/Faculty: _SCIENCE____________ Department:_Biological Sciences

Lecturer(s): _Dr Yana W, Mr Tofel H.K and Mrs Ebanga C.J._________

Course Code: _ZOOS2101_______ Course Title: Invertebrates Zoology

3- Draw, label Tiypanosfima and give the intermediate host of that protozoa. (2 mks)

4- Classify Cnidaria up to class with examples (4 mks)

5- Mention the characteristics of Poriferans and what are their reproductive cells? (3mks)

6- What is malarial oocyst and ookinete? (2mks)

7- Give an account of nutrition gas exchange in Porifera. (2 mks)

8- Mention the number of contractile vacuole in Paramecium and give their function.. (2 mks)

PART II (20 marks)

PART II

1- The annelid body is divided into similar rings, marked by circular grooves called a- annuli b-

longitudinal muscles against their _____skeleton, a-cartilaginous b-hydrostatic c-calcareous d-

bony

5-Thc nematodes arc unique in that motile ________ and are completely lacking a-cilia,

flqgella _________________________ b-flagella, ocelli . c-ocelli, blood cells d-blood cells,

cilia

6- Some of the nematodes are successful as endoparasites because their bodies are covered by a:

a-layer of cilia. b-cyst layer c-skin with glandular cells d-nonliving cuticle .

7- Distinguishing characteristics of nematodes are : a-cylindrical shape, non-living cuticle, lack

10- Earthworms are considered to be beneficial to the .environment because; a-their castings

contain nutrients b-they aerate the soil as they move through it c-they break up the soil in which

they live d- all of the above

11- The basic body plan of an annelid

a-consists of jointed legs b-is similar to a long- tube c-is a tube within a tube d- can be compared

to a corkscrew

12-Parapodia are involved in all of the following except. a- swimming b) gas exchange c-

burrowing d-reproduction

13- Coordinated movements of an annelid’s body segments are possible because of the a-

development of an advanced brain b-ventral nerve cord and paired segment ganglia c-

c-lipases d-cocoon

17- The mode of feeding in leech a- herbivorous b-carnivorous c-omnivorous d-

sanguinivous

18-The excretory system of annelids are a- uriniferous tubules b-flame cells c-nephridia d-

nephrosiomes

19-Miracidium is the Iarval stage in the development of

a- Taenia solium b-Fasctoia hepqiica c-Ascaris d-Echinococcus

20-An important character platyhelminthes share with the cnidarians is .

a-diploblastic condition b-single cavity communicating with the exterior c-three germ layers and

no coelom d-presence of complicated reproductive system

PART III: (30 marks)

1- Give the composition and role of arthropod epicuticle, (4 marks)

2- Describe the different modes of locomotion of mollusks. ( 8 marks)