11. Which of the following structures is not a skeletal material?
- A. Chitin
- B. Cartilage
- C. Bone
- D. Muscle
12. The reason why the flow of blood through the capillaries is very slow is
- A. because the walls of Capillaries are very thin
- B. to avoid high blood pressure
- C. to ensure that the individual does not get dizzy
- D. to allow adequate time for exchange of materials
13. Which of the following groups of organisms has kidney as the excretory organ?
- A. Fishes, amphibians, birds, man
- B. Fishes, amphibians, annelids, insects
- C. Fishes, reptiles, birds, tapeworm
- D. Fishes, protozoans, amphibians, man
14. Which of the following features is not a characteristic of arteries? Arteries
- A. possess valves at internals throughout their length
- B. have thick muscular and elastic walls
- C. carry blood away from the heart
- D. transport oxygenated blood with the exception of the pulmonary artery
15.
The graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
Which of the statements below is valid?
- A. The bird’s blood was always warmer than that of the lizard
- B. The body temperature of the bird varied less than that of the lizard during changes in environmental temperature
- C. The body temperature of the bird remained constant despite changes in environmental temperature
- D. The body temperature of the lizard was always close to that of the environmental temperature
16. The graph below(graph in Question 15) shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
What physiological term can used to describe the regulation of the body temperature of the of the Lizard?
- A. Homeostasis
- B. Homoithermy
- C. Poikilothermy
- D. Osmoregulation
17. The reason why hospitals use saline solutions as drip Instead of water is
- A. because salt is a preservative
- B. to prevent contamination of the body
- C. to maintain the composition of body fluids
- D. to increase the number of blood cells
18. The part of the ear which contains nerve cells sensitive to sound vibrations is the
- A. cochlea
- B. ampulla
- C. tympanum
- D. malleus
19. Spectacles with convex lenses correct long-sightedness by
- A. converging the light rays before they enter the eye
- B. diverging the light rays before they enter the eye
- C. reducing the light intensity before it enters the eye
- D. increasing the light intensity before it enters the eye
20. A seed of a flowering plant can best be described as
- A. radicle and plumule
- B. the developed ovule
- C. the embryo and endosperm
- D. developed ovary
