Get premium membership and access questions with answers, video lessons as well as revision papers.
Move towards favourable environment.
OR
Escape injurious stimuli/seek favorable habitats.
johnmulu answered the question on May 24, 2017 at 11:14
- Below are components of a simple reflex pathway: (Solved)
Below are components of a simple reflex pathway:
- Interneurone
- Muscle;
- Motor neurone;
- Sensory neurone;
- pain receptor
- Central nervous system
List the components in their proper sequence during transmission of a nerve impluse.
Date posted: May 24, 2017. Answers (1)
- The diagram below represents the transverse section of the spinal cord. (Solved)
The diagram below represents the transverse section of the spinal cord.
(a) Name the part labelled H.
(b) State two functions of the fluid found in the parts labelled J.
(c) Give a reason for the colour of white matter.
Date posted: May 24, 2017. Answers (1)
- Give a reason why the image is not formed when light is focused on the blind spot. (Solved)
Give a reason why the image is not formed when light is focused on the blind spot.
Date posted: May 24, 2017. Answers (1)
- The diagram illustrates a nerve cell. (Solved)
The diagram illustrates a nerve cell.
(a) Name the type of nerve cell illustrated.
(b) Give a reason for your answer in (a) above
(c) Identify the part labelled J
Date posted: May 24, 2017. Answers (1)
- State one function of each of the following parts of mammalian eye:
(Solved)
State one function of each of the following parts of mammalian eye:
(a) eye lashes
(b) Lachrymal glands
Date posted: May 24, 2017. Answers (1)
- State three differences between tactic and tropic responses. (Solved)
State three differences between tactic and tropic responses.
Date posted: May 24, 2017. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- What is meant by the term irritability? (Solved)
What is meant by the term irritability?
Date posted: May 24, 2017. Answers (1)
- State the importance of negative phototaxis to termites. (Solved)
State the importance of negative phototaxis to termites.
Date posted: May 24, 2017. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- State one function for each of the following;
(a) Cerebellum;
(b) Medulla oblongata. (Solved)
State one function for each of the following;
(a) Cerebellum;
(b) Medulla oblongata.
Date posted: May 24, 2017. Answers (1)
- (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. Answers (1)
- (a) Name the part of retina where image is formed.
(b) State two characteristics of the image formed on the retina. (Solved)
(a) Name the part of retina where image is formed.
(b) State two characteristics of the image formed on the retina.
Date posted: May 24, 2017. Answers (1)
- (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. Answers (1)
- 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. Answers (1)
- (a) State the function of ciliary muscles in human eye.
(Solved)
(a) State the function of ciliary muscles in human eye.
(b) State two functional differences between the rods and cones in the human eye.
Date posted: May 24, 2017. Answers (1)
- 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. Answers (1)
- 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. Answers (1)