BIOLOGY FIRST TERM EXAMINATION SS 3

FIRST TERM

Examination malpractices may lead to a repeat of the subject or suspensions don’t be involved.

SUBJECT: BIOLOGY                     TIME: 1HR 30MINS   CLASS: SS 3

1. Hepatitis B is a disease of the A. heart B. kidney C. liver D. pancreas
2. Dwarfism is caused by the deficiency of A. adrenalin B. insulin C.oxytocin  D. somatotropin
3. The following are fleshy fruits except A. berry B. drupe  C. legume  D. sorosis.

4.Which of the parts of the skin consists of actively dividing cell?  A. cornified  layerB. Granular layer  C. sweat gland D.malpighian layer.

5. The maintenance of a stable internal environment within the body of a mammal is known as

(a) homeostasis     (b) osmoregulation  (c) temperature (d) oxytocin

6.Which of the following conditions would result in a decrease in the production of anti-diuretic hormone  A. abnormal high blood sugar level  B.drinking large quantity of water  C.increase in osmotic pressure  D.period of strenuous activities

7.The amount of light entering the eyes is controlled by  A. irisB.cornea C. conjuctiva D.sclera.

8.All of the following are involved in the maintenance of constant internal environment exceptA. kidney  B.liver  C. lungs  D.skin

9Which of the following part of ear equalizes pressure on both sides of the eardrum semi-circular canals  B.cochlea C.eustachain tube D. utriculus

10.Which of the following is not a function of the liver  A. protein regulation  B. heat production  C. detoxification D. emancipation of cell.

11.Excessive breakdown of red blood cells, obstruction of bile duct is as a  result of a disease called  A. viral hepatitis B. jaundice  C. gall stone  D. cirrhosis

12.An example of a ductless gland is  A. salivary gland  B. gall bladder  C. pancreas D. pituitary gland.

13.The largest internal organ of the body is   A. lungs  B. liver  C.kidney  D. skin

14.Which of the following is the  master gland in the body  A. pituitary gland  B. salivary gland  C. liver  D.thyroid gland.

15.The blood vessels found in the dermis of  the skin is basically for  A.temperature regulation  B .Sensation  C. excretion  D. respiration

16.The part of the skin where melanin and keratin are stored is   A. malpighian layer  B.cornified layer  C.dermis  D. granular layer

17.Which of these is not  a function of hypothalamus?  A.temperture regulation  B.thirst  C.sleep and temperament  D.blood sugar regulation.

18.The hormone in a mature female that causes the release of mature eggs into fallopian tube is  A. follicle stimulating hormone B.luteinizing hormone C. thyroxine D.thyroid stimulating hormone.

19.The hormone that  regulate the amount of glucose in the blood is    A. adrenalin  B. auxin  C. insulin  D.prolactin

20. The function of the sebaceous gland is to A. secrete common salt  B. secrete water and salt  C. produce an oily secretion  D.produce vitamin for the skin.

21.The central nervous system is made up of  A.brain and liver  B.liver and kidney  C.kidney and skin D.brain and spinal cord.

22.Which of the following performs the function as the contractile vacuole of a unicellular organism?  A.alimentary canal  B. bladder  C. kidney  D. liver

23.The nerve cell at the dorsal root ganglion of the spinal cord is  A. association neurons  B.intermidate neurons  C. sensory neurons  D. motor neurons.

24..The chemical that fills the synapse to convert the electrical to chemical impulse during transmission of impulse along the neurons is   A. choline  B. acetyl  ion  C.acetyl choline  D. acetylcholine terase

25.The part of the brain that controls the hormonal system is   A. hypothalamus  B.optic lobe   C.auditory lobe D.pituitary gland

26.The nerve cell that is connected to effector is   A.motor  B.sensory  C. Intermediate  D.terminal

27.Knee jerk is an example of   A.learned behaviour  B. instinctive behaviour C. reflex action  D. voluntary action

28.Each neuron consists of the following structures except  A.cell body  B. dendrites  C.axon  D. White matter

29.The grey matter of the spinal cord consists of   A. bundles of fibres   B. axons  C.cell bodies and synapses  D.dendrites.

30. The structure that help to nourish the eye cell is A. choroid B.sclera C. retina D.cornea

31.The  main organ in the inner ear that is responsible for hearing is  A. sacculus  B.otholith  C. utriculus  D. cochlea

32.The bone of the ossicles at the center is  A. anvil   B.stirrup  C.malleus  D.stape

33.When the lens and the ciliary muscles lose their elasticity, a disease called A. astigmastism  B.saquinting. C.presbyopia D. short sightedness

34.Which of the following parts of the eye is not involved in the image formation?  A.retina  B.lens  C.  yellow spot  D. blind spot.

35.Which parts of the ear affects balance and posture?  A. semi-circular canal   B.  cochlea  C. oval window  D. ossicles

36.Which of the following structures occupies the neural canal of the vertebral column?  A.cerebellum   B.hypothalamus  C.medullar oblongata  D.spinal cord

37.Which parts of the tongue is sensitive to bitter tastes?  A.tip  B.side  C.middle  D.back

Use the diagram below to answer question 38 only

38.The diagram above is  an illustration of  A. normal sight  B.short sightedness C.correction of long sightedness  D.correction of short sightedness

39.The part of brain responsible for smelling is   A. olfactory lobe  B.auditory lobe  C.optic lobe  D.pons varolli

40.The underlisted structures are connected with reflex action (i) motor neurone  (2) sensory neurone (3) muscle  (4)skin (5) central nervous system. Which of the following represents the correct sequence of the  reflex pathway  A.3…1..5..2..4.. B.4…1…5…2…3   C.4…2…5…1…3   D. 3…2…5…1…3

41.All of the following are part of the nervous system except  A. paraympathethetic  B sympatheticC.peripheral nervous system  D.edocrine system

The diagram below is an illustration of human brain and answer questions42 and 43

42. The part labeled I is the A.olfactory lobe  B.cerebrum C. cerebellum  D.medulla oblongata

43.The function of the part labeled  II is that it controls A.posture and balance of the body B.temperature  C.sleep     D. excretion

44.Which of  these is stored in the liver? A. amino acid B. glycogen  C.glucose  D.lipids

45.Sensory nerve endings in the skin are sensitive to   A. heat  B. light  C.odour  D.sound.

46.The hormones in plants responsible for the bending of plant shoot toward light source is located in .A. flower  B.leaves  C. light rays  D. shoot tips .

47.The part of a neuron  which carries impulse to the cell body is the    A. myelin sheath B. axon   C. dendron D. ganglia.

48.Which of the following will not affect population size  A. predation  B.competition  C.immigration   D.none of the above.

49.The succession that involves formation of new soil is   A. primary  B. secondary  C. tertiary   D. all of  the above.

50. Which of these is not an example of a primary succession ? A. at the pond B. on a rock surface  C. in estuary  D. in a  forest

THEORY; ANSWER 3 QUESTIONS ON

1a. Describe how the mammalian skin can serve as thermal regulator in hot room (3mk

1. Explain briefly the functions of the liver in relation to (i)  carbohydrate  (ii) proteins (iii)toxic substances  (iv)  temperature regulation (4mk
2. Make a well labeled diagram of mammalian skin (10-12cm long) (3mk

2a,State two functions  each of  the following structure  (i)  hypothalamus  (ii)cerebrum  (iii)cerebellum   (3mk

1. Make a labeled diagram of rabbit brain(10- 12cm )long (3mk
2. Mention two elements that is involved in the transmission of impulse along a neuron (2mk
3. State 2 differences between reflex and voluntary actions (2mk

3a.In tabular form, state two differences between hormonal coordination and nervous coordination  (2mk

B .Name two hormones each involved in plant growth and animal growth state one  their effect the organisms (4mk

1. Describe the process of osmoregulation in man (2mk

d .Make a labeled Diagram of a neuron between (10-12cm long)  (2mk

4a.Explain how mammalian body regulate their blood sugar (4mk

1. Draw a diagram to show the location of the following glands; adrenal gland; thyroid gland; pituitary gland and ovary (2mk
2. Describe what happens when a student accidentally steps on the edge of an office pin and quickly raises his leg(4mk

5a.Make a labeled diagram of mammalian eye (10- 12 cm ) long (3mk.

1. State two eye defects and their corrections (3mk
2. Define sense organ (1mk
3. Explain why a person in a dark room is dazzled for some seconds when is exposed to bright sunlight(3mk