Get premium membership and access questions with answers, video lessons as well as revision papers.
a)Enable animals to search for food and water ; escape from predators and hostile environment; look for mates and breeding ground.
b)Enhance survival of organism.
sharon kalunda answered the question on May 23, 2019 at 11:10
- Explain why herbivores have large eyes on their sides?(Solved)
Explain why herbivores have large eyes on their sides?
Date posted: May 22, 2019. Answers (1)
- The following micrographs show images taken from a transverse section of a various stems by
a light microscope. Analyze them closely and use them to answer...(Solved)
The following micrographs show images taken from a transverse section of a various stems by
a light microscope. Analyze them closely and use them to answer questions that follow.
a)On the diagram, label part A, B and C
b) Explain the adaptation of the parts C and D to their functions
c) Identify five differences between cross section T and Q.
d) Explain how part B facilitates the process of secondary growth
Date posted: May 22, 2019. Answers (1)
- The Diagram below shows two organisms (R and S) belonging to the same phylum
(a) Name the class in which the organisms shown above belong.
i)...(Solved)
The Diagram below shows two organisms (R and S) belonging to the same phylum
(a) Name the class in which the organisms shown above belong.
i) Organism R
ii) Organism S
b) Other than presence of exoskeleton, list two observable similarities between the two organisms
c) List two observable differences between the two organisms
d) Explain how the organism labelled R is adapted to safeguard itself from the predator
e) (i) Name the gaseous exchange system exhibited by organism S
ii) State the respiratory surface used by organism S
Date posted: May 22, 2019. Answers (1)
- Describe the process of exhalation in mammals.(Solved)
Describe the process of exhalation in mammals.
Date posted: May 22, 2019. Answers (1)
- Discuss/Describe gaseous exchange in alveolus.(Solved)
Describe gaseous exchange in alveolus.
Date posted: May 22, 2019. Answers (1)
- An experiment was set up to demonstrate the necessity of carbon (IV) oxide for
photosynthesis in a certain green plant as shown below. The plant was...(Solved)
An experiment was set up to demonstrate the necessity of carbon (IV) oxide for
photosynthesis in a certain green plant as shown below. The plant was first kept
darkness for 48 hours before the experiment.
a), Why was the plant kept in darkness for 48 hours before the start of this experiment.
b), What was the role of sodium hydroxide?
ci)What was the results shown by the leaf in the flask when it was tested for presence of starch after
the set up was exposed to light for a day?.
ii), Give reasons for your answer in (c) I above
d. Suggest a control for this experiment.
e), Name other two limiting factors in this experiment.
Date posted: May 22, 2019. Answers (1)
- Name two harmones that bring about rapid cell division in plants(Solved)
Name two harmones that bring about rapid cell division in plants
Date posted: May 22, 2019. Answers (1)
- In an experiment a group of students set up the test tubes as shown below
a), What was the aim experiment?
b), Why was pyrogallic acid...(Solved)
In an experiment a group of students set up the test tubes as shown below
a), What was the aim experiment?
b), Why was pyrogallic acid included in the gas jar. A?
c), What results would you expect in each of the gas jar A and B at the end of experiment?
Date posted: May 22, 2019. Answers (1)
- Give an explanation why haemophilia is more common in males than in females.(Solved)
Give an explanation why haemophilia is more common in males than in females.
Date posted: May 22, 2019. Answers (1)
- Haemophilia is a sex linked disorder due to a recessive gene. A carrier woman married a
normal man. Let H represent gene for normal condition and...(Solved)
Haemophilia is a sex linked disorder due to a recessive gene. A carrier woman married a
normal man. Let H represent gene for normal condition and h to represent gene for
haemophilic condition.
a), State the genotypes of
i), Man
ii), woman
bi), Using a punnet square, show the genotypes of the children resulting from this
marriage
ii), State the probability of getting a carrier daughter.
Date posted: May 22, 2019. Answers (1)
- The diagram below shows some components of a light microscope.
a), Name the parts labeled
K –
M –
b), State the functions of
P –
Q –
c) A...(Solved)
The diagram below shows some components of a light microscope.
a), Name the parts labeled
K –
M –
b), State the functions of
P –
Q –
c) A student was viewing a prepared slide of a plant cell under high power microscope.
The features of the cell were blurred. Which one of the labeled parts of the microscope
would the student use to obtain; A sharper outline of the features
Date posted: May 22, 2019. Answers (1)
- State two functions of ovaries in humans.(Solved)
State two functions of ovaries in humans.
Date posted: May 22, 2019. Answers (1)
- The diagram below shows a phenomenon which occurs during cell division.
a) Identify the stage of cell division in which this phenomenon occurs.
b) State the...(Solved)
The diagram below shows a phenomenon which occurs during cell division.
a) Identify the stage of cell division in which this phenomenon occurs.
b) State the importance of the phenomenon taking place in the part labeled B.
Date posted: May 22, 2019. Answers (1)
- What causes apical dominance?(Solved)
What causes apical dominance?
Date posted: May 22, 2019. Answers (1)
- What is meant by self sterility with reference to flowers?(Solved)
What is meant by self sterility with reference to flowers?
Date posted: May 22, 2019. Answers (1)
- Use the graph below to answer the following questions.
(a) Why does the activity of the enzyme become constant after a while?
(b) State how the activity...(Solved)
Use the graph below to answer the following questions.
(a) Why does the activity of the enzyme become constant after a while?
(b) State how the activity of the enzyme may be increased in (a) above.
Date posted: May 22, 2019. Answers (1)
- Why is the wall of the left ventricle thicker than that of the right ventricle.(Solved)
Why is the wall of the left ventricle thicker than that of the right ventricle.
Date posted: May 22, 2019. Answers (1)
- State three preventive measures of schistosomiasis in human beings(Solved)
State three preventive measures of schistosomiasis in human beings
Date posted: May 22, 2019. Answers (1)
- Below is a diagram of an organelle.
(a) State the function of the organelle drawn above.
(b) Name the parts of the organelle where :
(i) Oxygen...(Solved)
Below is a diagram of an organelle.
(a) State the function of the organelle drawn above.
(b) Name the parts of the organelle where :
(i) Oxygen gas is produced as a byproduct.
(ii) Carbon (IV) oxide is utilized.
Date posted: May 22, 2019. Answers (1)
- The diagram below represents a transverse section of a plant part. Study it and answer the questions that
follow.
a)Name the class in which the plant belongs.
b)...(Solved)
The diagram below represents a transverse section of a plant part. Study it and answer the questions that
follow.
a)Name the class in which the plant belongs.
b) Give a reason for answer (a) above.
c) State one adaptation for the structures labeled X to their functions.
Date posted: May 22, 2019. Answers (1)