REPUBLIC OF CAMEROON THE UNIVERSITY OF BAMENDA

Peace-Work-Fatherland P. O. BOX 39 Bambili

School/Faculty: _SCIENCE_ Department:Biological Sciences Lecturer(s): Dr Ntonifor

H, Dr Yana W and Dr Ebanga Echi J. Course Code: _ZOOS2202___Course Title:

Vertebrates Zoology Date: 31/07/17______Halls: PBA 07 / PBA 08 ________Time:

2:30-5:30

Instructions: ANSWER ALL QUESTIONS

Outline in point form the basic functions of the digestive system of fishes. 2mks

How do lampreys and hag fishes depart from the fundamental plan of the digestive system of

vertebrates? 2mks

What are the functions of the numerous pyloric caeca attached to the intestines of ray filmed

fishes? 2mks

……….. is the functional kidney of embryonic amniotes 1mk

In all vertebrate embryos ………is the first kidney to appear, lmk

Ennumerate two disadvantages of egg scatterers (Reproductive method in fishes). 2mks

Outline and briefly explain three biological contributions of the phylum chordata. 3mks

Lateral lines are composed of …. that usually lie at the bottom of a visible pit or groove, 1mk

Ranidae; d) Urodelidae.

2- Concerning reproduction in Salamandridae family: a)10% have internal fertilization; b)

10% have external fertilization: c) 20% have internal fertilization; d) 20% have external

fertilization.

3- The perennibranchiate condition occurs in: a) salamanders; b) frogs; c) toads; d) caecilians.

4-lridophore chromatophores of amphibian skin contain: a) red pigment; b) yellow pigment;

c) orange pigment; d) silvery pigment; e) melanin pigment.

5-The rhombencephalon of amphibians is concerned with: a) sense of smell; b) vision; c)

hearing and balance; d) olfactory sense.

6-The latent hermaphrodism is found in: Bufonidae; b) Salamandridae; c) Ranidae; d)

8. The phaneria found on amphibian skin are: a) scales; b) hairs; c) feathers; d)glandular

9. In caecilian amphibians some species are viviparous and embryo obtains nourishment from:

a) wall of ovary; b) wall of uterus; c) wall of vagina; d) placenta.

10. The tortoises have; a) two pairs of fenestrations; b) no fenestration; c) one pair of

fenestrations; d) three pairs of fenestrations.

11.The most typical pattern of movement during locomotion is: a) lateral undulation; b)

concertina movement; c) rectilinear movement; d) concertina undulation.

12- The locomotive appendages of terrestrial vertebrates are called: a) pterygia; b) tetrapods;

c) ehiridia; d) pterygia or ehiridia.

13. The two evolved features that would be important for permitting the subsequent evolution

for life on land by some primarily aquatic vertebrates are: a) gills and lungs b) gills and fins c)

B- Copy and complete the following table: 5 marks

3. Humans, apes, monkeys, and lemurs belong to the order—1mk

4. The lungs of mammals are made of small air tubes called- 1mk

5. Birds dissipate large quantities of heat by two important characteristics of birds skeleton is

that it is …….. and ………….. (3mk)

6. Contour feathers are ….. and are an example of ……..type of feathers (2mks)

7. What is the primary function of hair in mammals? (1 mk)

II-Write down only the correct answer(s) (15 maries)

1. What are three important aspects of parental care shown by mammals? (3 mks)

2. Why does a mammal need to eat more food than a reptile of similar size (2 mks)

tus;

Gallus gallus

3. What is the importance of endothermy to mammals? (2 mks)

5. Name two kinds of hair forming the pelage in mammals and give the function of each (4

mks)

6. Lit three adaptation of mammal for hot weather environment. (3 mks)