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
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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.
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Kingdom.
Reason.
Date posted:
May 24, 2019
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Answers (1)
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The diagram below show a part of a plant.
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Date posted:
May 24, 2019
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May 24, 2019
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Give a reason why constant body temperatures is maintained in human beings?
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May 23, 2019
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What are the side effects of lactic acid accumulation?
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May 23, 2019
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(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.
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(ii) Give an observable feature on bone 3 for your answer in (b) (i) above
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Date posted:
May 23, 2019
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Answers (1)
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(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.
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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.
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May 23, 2019
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Answers (1)
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May 23, 2019
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May 23, 2019
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(Solved)
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Date posted:
May 23, 2019
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Answers (1)
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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.
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Date posted:
May 23, 2019
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Answers (1)
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(Solved)
State the role of glycogen in the human body.
Date posted:
May 23, 2019
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Answers (1)
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(Solved)
State two processes which occur during prophase 1 of meiosis.
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May 23, 2019
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Answers (1)
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State the role of vitamin A in humans.
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May 23, 2019
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Answers (1)
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Give a reason why red blood cells have no nucleus.
Date posted:
May 23, 2019
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Answers (1)
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(Solved)
Name two forms in which carbon (IV) oxide is transported in blood.
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May 23, 2019
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Answers (1)
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(Solved)
Name the class to which the tick belongs.
Date posted:
May 23, 2019
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Answers (1)
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The diagram below represents a cell organelle.
a) Name the part labelled B.
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(Solved)
The diagram below represents a cell organelle.
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b) State the function of the part labelled A.
Date posted:
May 23, 2019
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Answers (1)
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Study the photograph below. The specimen had been placed in adequate light at a horizontal position for one week.
i) What was the aim of this...
(Solved)
Study the photograph below. The specimen had been placed in adequate light at a horizontal position for one week.
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Date posted:
May 23, 2019
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Answers (1)
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Below are drawings of some organisms belonging to the same phylum. Examine them carefully.
a) i) Name the phylum to which the organism represented by the...
(Solved)
Below are drawings of some organisms belonging to the same phylum. Examine them carefully.
a) i) Name the phylum to which the organism represented by the drawings belong.
ii) Give two reasons for answer in a(i) above.
b) Using the features in the order given below, construct a dichotomous key that can be used to identify the specimens.
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Date posted:
May 23, 2019
.
Answers (1)