(a) Protects the eye from entry of small materials or particles by trapping them.
(b) It secretes tears which moisten the cornea and wash away foreign material out of the eye. Tears are amtiseptic, they kill micro-organisms.
johnmulu answered the question on May 24, 2017 at 09:52
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State three differences between tactic and tropic responses.
(Solved)
State three differences between tactic and tropic responses.
Date posted:
May 24, 2017
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Answers (1)
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The diagram below represents the human ear.
(Solved)
The diagram below represents the human ear.
(a) Name the parts labelled E, F and G.
(b) Name one defect of the human ear.
Date posted:
May 24, 2017
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Answers (1)
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The diagram below illustrates a defect in the eye.
(Solved)
The diagram below illustrates a defect in the eye.
Explain how the defect illustrated above can be corrective can be corrected.
Date posted:
May 24, 2017
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Answers (1)
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What is meant by the term irritability?
(Solved)
What is meant by the term irritability?
Date posted:
May 24, 2017
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Answers (1)
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State the importance of negative phototaxis to termites.
(Solved)
State the importance of negative phototaxis to termites.
Date posted:
May 24, 2017
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Answers (1)
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The diagram below represents a section of the human brain.
(Solved)
The diagram below represents a section of the human brain.
(i) Name the structures labeled P and R.
(ii) State two functions of the part labeled Q.
Date posted:
May 24, 2017
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Answers (1)
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The diagram below shows how the iris and pupil of a human eye appear under different conditions.
(Solved)
The diagram below shows how the iris and pupil of a human eye appear under different conditions.
(a) Name the structures labeled X and Y.
(b) (i) State the condition that leads to the change in appearance shown in the diagram labeled B.
(ii) Describe the changes that leads to the appearance of the iris and pupil as shown in the diagram labeled B.
(iii) What is the s
Date posted:
May 24, 2017
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Answers (1)
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(a)(i) Explain the changes that take place in the pupil and iris of a human eye when a person moves from a dark room to a room with bright light.
(ii) What is the significance of the changes explained in (a) above.
(Solved)
(a)(i) Explain the changes that take place in the pupil and iris of a human eye when a person moves from a dark room to a room with bright light.
(ii) What is the significance of the changes explained in (a) above.
(b) How does the human eye obtain nutrients?
(c) Explain why images that form on the blind spot are not perceived
Date posted:
May 24, 2017
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Answers (1)
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(a) Where in the human body are relay neurons found
(b) The diagram below represents a neurone
(Solved)
(a) Where in the human body are relay neurons found
(b) The diagram below represents a neurone
(i) Name the neurone
(ii) Name the parts labeled P and Q
(c) State a function of myelin sheath
Date posted:
May 24, 2017
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Answers (1)
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State the function of each of the following parts of human ear.
(a) Ear ossicles
(b) Cochlea
(Solved)
State the function of each of the following parts of human ear.
(a) Ear ossicles
(b) Cochlea
(c) Semi circular canals
(d) Eustachian tube.
Date posted:
May 24, 2017
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Answers (1)
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The diagram below represents a reflex arc in human.
(Solved)
The diagram below represents a reflex arc in human.
(a) Name the parts labeled X and Y.
(b) Name the substance that is responsible for the transmission of an impulse across the synapse
Date posted:
May 24, 2017
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Answers (1)
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State the importance of tactic response among some members of kingdom protista.
(Solved)
State the importance of tactic response among some members of kingdom protista.
Date posted:
May 24, 2017
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Answers (1)
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Apart from hearing, state another function of the human ear.
(Solved)
Apart from hearing, state another function of the human ear.
Date posted:
May 24, 2017
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Answers (1)
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The diagram below shows the position of an image formed in a defective eye.
(Solved)
The diagram below shows the position of an image formed in a defective eye.
(a) Name the defect.
(b) Explain how the defect named in (a) above can be corrected.
Date posted:
May 24, 2017
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Answers (1)
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What is the function of the following cells in the retina of human eye?
(Solved)
What is the function of the following cells in the retina of human eye?
(a) Cones
(b) Rods
Date posted:
May 24, 2017
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Answers (1)
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The diagram below shows surface view of a human brain.
(Solved)
The diagram below shows surface view of a human brain.
(i) Name the parts labeled B and C.
(ii) State what would happen if the part labeled B was damaged.
Date posted:
May 19, 2017
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Answers (1)
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The diagram below represents a nerve cell.
(Solved)
The diagram below represents a nerve cell.
(a) (i) Identify the nerve cell.
(ii) Give a reason for your answer in (a) (i) above
(b) Name the structure labeled T.
Date posted:
May 19, 2017
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Answers (1)
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In an experiment it was found that when maggots are exposed to light they move to dark areas.
(a) Name the type of response exhibited by the maggots
(b) Name the advantages of the response to the maggots
(Solved)
In an experiment it was found that when maggots are exposed to light they move to dark areas.
(a) Name the type of response exhibited by the maggots
(b) Name the advantages of the response to the maggots
Date posted:
May 19, 2017
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Answers (1)
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A person was able to read a book clearly at arm's length but not at normal reading distance.
(Solved)
A person was able to read a book clearly at arm's length but not at normal reading distance.
(a) State the defect the person suffered from?
(b) Why was he unable to read the book clearly at normal distance.
Date posted:
May 19, 2017
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Answers (1)
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In an accident, a victim suffered brain injury. Consequently he had loss of memory. Which part of the brain was damaged?
(Solved)
In an accident a victim suffered brain injury. Consequently he had loss of memory. Which part of the brain was damaged.
Date posted:
May 19, 2017
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Answers (1)