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a) A - nitrogen fixation by symbiotic bacteria ; (for example Rhizobium)
D - Absorption ;
b) B - nitrites ;
c) C - Denitrifying bacteria ; / denitrifier;
d) i) Leguminous plants ; / legumes;
ii) Root nodules (s) ;
e) -Killing / reduction of nitrogen fixing bacteria / nitrogen fixing micro-organisms;
-Destruction of leguminous plants;
sharon kalunda answered the question on May 24, 2019 at 06:04
- The diagram below shows a certain cell. Use it to answer questions that follow.
a) Identify the structures labelled A, B, C and D.
b) With a...(Solved)
The diagram below shows a certain cell. Use it to answer questions that follow.
a) Identify the structures labelled A, B, C and D.
b) With a reason identify the kingdom from which the cell was obtained.
Kingdom.
Reason.
Date posted: May 24, 2019. Answers (1)
- State the form in which carbohydrates are stored in
i) Plants.
ii) Animals(Solved)
State the form in which carbohydrates are stored in
i) Plants.
ii) Animals
Date posted: May 24, 2019. Answers (1)
- The diagram below show a part of a plant.
a) Identify the plant part.
b) Give a reason for your answer in (i) above.
c) Name...(Solved)
The diagram below show a part of a plant.
a) Identify the plant part.
b) Give a reason for your answer in (i) above.
c) Name the parts marked A and B.
Date posted: May 24, 2019. Answers (1)
- State two functional differences between the rods and cones in the human eye.(Solved)
State two functional differences between the rods and cones in the human eye.
Date posted: May 24, 2019. Answers (1)
- The diagram below represents a motor neurone.
a) With an arrow, indicate on the diagram the direction of the impulse through the neurone.
b) State the...(Solved)
The diagram below represents a motor neurone.
a) With an arrow, indicate on the diagram the direction of the impulse through the neurone.
b) State the function of parts labelled P and Q.
Date posted: May 24, 2019. Answers (1)
- Give a reason why constant body temperatures is maintained in human beings?(Solved)
Give a reason why constant body temperatures is maintained in human beings?
Date posted: May 23, 2019. Answers (1)
- What are the side effects of lactic acid accumulation?(Solved)
What are the side effects of lactic acid accumulation?
Date posted: May 23, 2019. Answers (1)
- Photograph P below is from a mammalian skeleton
i) Identify bone C and E
ii) Name the bone that articulates at point Q and the type of...(Solved)
Photograph P below is from a mammalian skeleton
i) Identify bone C and E
ii) Name the bone that articulates at point Q and the type of joint formed
Bone
Joint
Date posted: May 23, 2019. Answers (1)
- Below is a photograph obtained from the pelvic region of a human being and showing some bones of the vertebral column. Examine it carefully and...(Solved)
Below is a photograph obtained from the pelvic region of a human being and showing some bones of the vertebral column. Examine it carefully and answer the questions that follow.
a) Identify the bones labeled 1,2 and 3
b) (i) Name the type of joint formed at the proximal end of bone as 3 as it articulates with the adjacent bone (1mk)
(ii) Give an observable feature on bone 3 for your answer in (b) (i) above
c) (i) Identify the part labeled P
(ii)Give two functions of the part identified in (c) (i) above
d) Using observable features only, state how bone 1 is adapted to its functions
e) (i) Identify the part labeled Q
(ii) Give the function of the part labeled Q
Date posted: May 23, 2019. Answers (1)
- Study the photographs A and B that shows part of plants in natural habitat.
a) Name the type of the plant response shown in:
i) A
ii) B
b)...(Solved)
Study the photographs A and B that shows part of plants in natural habitat.
a) Name the type of the plant response shown in:
i) A
ii) B
b) Explain the mechanisms of the response in
A
B
c) State the biological significance of the response to plants in
A
B
d) Suggest the nature of the habitat that plants with the type of response A grows.
Date posted: May 23, 2019. Answers (1)
- Examine the photograph which shows parts of the urogenital system of a female rat and answer the questions that follow. The
organ marked 1 is the...(Solved)
Examine the photograph which shows parts of the urogenital system of a female rat and answer the questions that follow. The
organ marked 1 is the stomach.
a) i) Name the organ marked 2 .
ii) State two functions of the organ.
iii) What is the functional unit of the organ named in (a) (i) above?
b) i) Identify and name each of the organs marked 3 and 4.
ii) State two functions of the part marked 4.
c) i) Identify and name the organ marked 5.
ii) Explain two functions of the organ named c(i) above.
d) The organ marked 6 is the large intestine. State two functions of the large intestine.
Date posted: May 23, 2019. Answers (1)
- Examine the photograph of a fish shown below.
a) Name the fins responsible for the following during swimming.
i) Balance, break and change direction.
ii) Prevent fish...(Solved)
Examine the photograph of a fish shown below.
a) Name the fins responsible for the following during swimming.
i) Balance, break and change direction.
ii) Prevent fish from rolling and yawing
b) Explain the process of gill ventilation between part labelled S to part labelled T.
c) State one adaptation each for the structures labelled K and L.
d) Name the parts labelled U and W.
Date posted: May 23, 2019. Answers (1)
- The photographs below shows a pair of mammalian organs with their blood supply. One of the organs has been sectioned
longitudinally. Examine them.
a) Identify the pair...(Solved)
The photographs below shows a pair of mammalian organs with their blood supply. One of the organs has been sectioned
longitudinally. Examine them.
a) Identify the pair of organs.
b) i) Name the blood vessels labelled M, P and Q
ii) Which of the blood vessels P and Q carries blood with a higher concentration of urea ? Give a
reason for your answer.
Blood vessel
Reason
c) Name the structures labelled R and state its function.
Name .
Function .
d) i) Name the parts labelled S and T
ii) Name two parts of the nephron found in the part labelled S.
Date posted: May 23, 2019. Answers (1)
- Give a reason why lack of roughage in the diet often leads to constipation.(Solved)
Give a reason why lack of roughage in the diet often leads to constipation.
Date posted: May 23, 2019. Answers (1)
- State how excessive use of pesticides may affect soil fertility.(Solved)
State how excessive use of pesticides may affect soil fertility.
Date posted: May 23, 2019. Answers (1)
- Explain how the process of evolution may result to the formation of a new species.(Solved)
Explain how the process of evolution may result to the formation of a new species.
Date posted: May 23, 2019. Answers (1)
- a) Identify the type of respiration illustrated in the equation above.
b) Explain why lactic acid was not produced in the reaction illustrated in the...(Solved)
a) Identify the type of respiration illustrated in the equation above.
b) Explain why lactic acid was not produced in the reaction illustrated in the equation above.
Date posted: May 23, 2019. Answers (1)
- An experiment was set up as shown in the diagram below.
The set up was left was 30 minutes.
a) State the expected results from the starch...(Solved)
An experiment was set up as shown in the diagram below.
The set up was left was 30 minutes.
a) State the expected results from the starch solution.
b) Explain your answer in (a) above
Date posted: May 23, 2019. Answers (1)
- State the role of glycogen in the human body.(Solved)
State the role of glycogen in the human body.
Date posted: May 23, 2019. Answers (1)
- State the type of response exhibited by the following:
a) Sperm cell as its swims towards the ovum.
b) Feeding in insectivorous plant.(Solved)
State the type of response exhibited by the following:
a) Sperm cell as its swims towards the ovum.
b) Feeding in insectivorous plant.
Date posted: May 23, 2019. Answers (1)