a) Secondary growth / secondary thickening
b) Primary phloem
c) Divide by mitosis to form secondary phloem and secondary xylem
maurice.mutuku answered the question on November 13, 2019 at 05:32
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State two ways through which proteins are assimilated in the body
(Solved)
State two ways through which proteins are assimilated in the body
Date posted:
November 13, 2019
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Answers (1)
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Explain why a rat has a higher food intake compared to a lizard of the same body weight.
(Solved)
Explain why a rat has a higher food intake compared to a lizard of the same body weight.
Date posted:
November 12, 2019
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Answers (1)
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State two major roles of the kidney.
(Solved)
State two major roles of the kidney.
Date posted:
November 12, 2019
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Answers (1)
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Why is a pyramid of biomass a more accurate way of representing the amount of organic matter present in each trophic level as compared to...
(Solved)
Why is a pyramid of biomass a more accurate way of representing the amount of organic matter present in each trophic level as compared to the pyramid of numbers?
Date posted:
November 12, 2019
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Answers (1)
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The diagram below represents a section through a chloroplast as seen under the electron microscope.
(Solved)
The diagram below represents a section through a chloroplast as seen under the electron microscope.
(a) Name the structure labelled D.
(b) In which labelled structure do we find chlorophyll molecule.
(c) Name the structure labelled, where carbon IV oxide fixation occurs.
Date posted:
November 12, 2019
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Answers (1)
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Explain why movement of air molecules is not energy driven process.
(Solved)
Explain why movement of air molecules is not energy driven process.
Date posted:
November 12, 2019
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Answers (1)
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State two precautionary measures which should be taken in preventing the spread of HIV.
(Solved)
State two precautionary measures which should be taken in preventing the spread of HIV.
Date posted:
November 12, 2019
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Answers (1)
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The figure below shows change in dry mass of germinating bean seeds with time.
(Solved)
The figure below shows change in dry mass of germinating bean seeds with time.
Account for the;
(i) Decline in dry mass between A and B.
(ii) Rapid increase in dry mass between C and D.
Date posted:
November 12, 2019
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Answers (1)
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The diagram below represents a cell organelle as seen under electron microscope.
(Solved)
The diagram below represents a cell organelle as seen under electron microscope.
(i) Identify the organelle.
(ii) State the function of the organelle named in (i) above in the cell.
(iii) State one visible adaptation that makes it suitable to perform its function.
(iv) Name one cell that has a large number of the organelle named in (i) above.
Date posted:
November 12, 2019
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Answers (1)
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State the structural differences between the xylem and phloem.
(Solved)
State the structural differences between the xylem and phloem.
Date posted:
November 12, 2019
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Answers (1)
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The diagram below represents a kidney nephron.
(Solved)
The diagram below represents a kidney nephron.
(a) Name the parts labeled G, and H.
(b) Name the process that takes place in the glomerulus.
(c) Name the substances that are reabsorbed into the blood at the part labeled J.
(d) A patient was found to pass out large volumes of dilute urine.
(i) State the disease from which the patient was suffering from.
(ii) What is the cause of the disease stated in (d) (i) above?
(e) Name substance K.
Date posted:
November 7, 2019
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Answers (1)
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Work out the chance that a son of a normal man and a woman who is a carrier for haemophilia will be a haemophiliac. Let...
(Solved)
Work out the chance that a son of a normal man and a woman who is a carrier for haemophilia will be a haemophiliac. Let the gene for normal blood clotting be H.
Date posted:
November 7, 2019
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Answers (1)
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The diagram below represents a germinating seedling.
(Solved)
The diagram below represents a germinating seedling.
(i) State the type of germination shown in the diagram.
(ii) Name the part labeled E.
(iii) What is the function of the endosperm labeled F?
Date posted:
November 7, 2019
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Answers (1)
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The diagram below represents a human digestive system.
(Solved)
The diagram below represents a human digestive system.
(a) Name the muscles found in the part labeled A.
(b) Name and explain the role of the juice contained in the sac labeled B.
(c) Explain two adaptations of the part labeled D to its function.
Date posted:
November 7, 2019
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Answers (1)
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Explain why there are only a few days in each menstrual cycle when fertilization can occur.
(Solved)
Explain why there are only a few days in each menstrual cycle when fertilization can occur.
Date posted:
October 31, 2019
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Answers (1)
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Give two reasons for screening blood before transfusion.
(Solved)
Give two reasons for screening blood before transfusion.
Date posted:
October 31, 2019
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Answers (1)
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A person who is blood group AB has an advantage over a person who is blood group O. Explain.
(Solved)
A person who is blood group AB has an advantage over a person who is blood group O. Explain.
Date posted:
October 31, 2019
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Answers (1)
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The diagram below represents a longitudinal section of a bean study it and answer the questions that follow:
a) Identify the parts labeled A to D.
b)...
(Solved)
The diagram below represents a longitudinal section of a bean study it and answer the questions that follow:
a) Identify the parts labeled A to D.
b) Give the role of the plant labeled D.
c) What type of germination would the seed shown above undergo?
Date posted:
October 31, 2019
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Answers (1)
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The letters ‘N’ and n represents the dominant and recessive genes for hemophilia respectively.
Write down the genotype of the following
a)Homozygous dominant
b)Homozygous recessive
c)Heterozygote
(Solved)
The letters ‘N’ and n represents the dominant and recessive genes for hemophilia respectively.
Write down the genotype of the following
a)Homozygous dominant
b)Homozygous recessive
c)Heterozygote
Date posted:
October 30, 2019
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Answers (1)
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During research on different types of plants students found a plant that looked like the one shown below
a)Identify the plant.
b) Name the parts labeled A,...
(Solved)
During research on different types of plants students found a plant that looked like the one shown below
a)Identify the plant.
b) Name the parts labeled A, B, C and D.
c)State the division to which the plant belongs.
Date posted:
October 30, 2019
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Answers (1)