i) Thin walled due to absence of cuticle to allow reduced distance of diffusion of water and mineral salt thus increase the rate of diffusion of molecules.
ii) Has fingerlike projections, elongated to increase surface area for absorption of water and mineral salts
iii) Presence of large vacuole with dissolved solute to increase osmotic pressure between cell sap and water in the soil
iv) Has numerous mitochondria to provide energy which allow uptake of ions by active transport
johnmulu answered the question on May 2, 2017 at 12:29
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The diagram below represents a traverse section through a plant organ
(Solved)
The diagram below represents a traverse section through a plant organ
a) From which plant organ was the section obtained
b) Give two reasons for your answer in (a) above.
c) Name the part labeled J, K and L.
d) State two functions of the parts labeled
Date posted:
May 2, 2017
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Answers (1)
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A set up that was used to investigate certain process in plants is shown in the diagram below
(Solved)
A set up that was used to investigate certain process in plants is shown in the diagram below
a) What process was being investigated?
b) State three environmental factors that influence the process under investigation.
Date posted:
May 2, 2017
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Answers (1)
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The diagram below represents regions of a root tip
(Solved)
The diagram below represents regions of a root tip
a) Name the two regions above X in ascending order.
b) State the function of the part labeled X
Date posted:
May 2, 2017
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Answers (1)
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The diagram below represents part of phloem tissue.
(Solved)
The diagram below represents part of phloem tissue.
a) Name the structure labeled R and S and the cell labeled T.
b) State the function of the structure labeled S.
c) Explain why xylem is a mechanical tissue.
Date posted:
May 2, 2017
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Answers (1)
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Name two processes that bring about the translocation of manufactured food.
(Solved)
Name two processes that bring about the translocation of manufactured food.
Date posted:
May 2, 2017
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Answers (1)
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State two ways in which xylem vessels are adapted to their function.
(Solved)
State two ways in which xylem vessels are adapted to their function.
Date posted:
May 2, 2017
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Answers (1)
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The diagram below represents the pathways of water from the soil into the plant.
(Solved)
The diagram below represents the pathways of water from the soil into the plant.
a) Name the structures labeled K and L.
b) Name the process by which minerals salts enter into the plant.
Date posted:
May 2, 2017
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Answers (1)
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Name two structures used for gaseous exchange in plants.
(Solved)
Name two structures used for gaseous exchange in plants.
Date posted:
May 2, 2017
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Answers (1)
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The diagram below represents a transverse section of a young stem
(Solved)
The diagram below represents a transverse section of a young stem
a) Name the parts labeled A and B.
b) State the function of the parts labeled C, D and E
Date posted:
May 2, 2017
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Answers (1)
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Give three factors that determine the amount of energy a human being requires in a day
(Solved)
Give three factors that determine the amount of energy a human being requires in a day
Date posted:
May 2, 2017
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Answers (1)
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Describe the process of carbohydrate digestion in human beings
(Solved)
(a) How is a human stomach adapted to (i) Protein digestion? (ii) Churning?
b) What happens to the glucose synthesize during photosynthesis?
Date posted:
May 2, 2017
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Answers (1)
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a)Name the appropriate food substance from substance for each of the following enzymes (i)Ptyalin (ii) Pepsin
(Solved)
a)Name the appropriate food substance from substance for each of the following enzymes (i)Ptyalin (ii) Pepsin(b) State the causes and two symptoms of Beri-beri.
Date posted:
May 2, 2017
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Answers (1)
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State two ways in which the human intestinal villus is adapted to its function.
(Solved)
State two ways in which the human intestinal villus is adapted to its function.
Date posted:
May 2, 2017
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Answers (1)
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Name two nutrients that are absorbed without being digested by enzymes in humans.
(Solved)
Name two nutrients that are absorbed without being digested by enzymes in humans.
Date posted:
May 2, 2017
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Answers (1)
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The diagram below represents part of the human digestive system.
(Solved)
The diagram below represents part of the human digestive system.
a) Name the organs labelled L and M.
b) i) Name the substance produced by the organ labeled K
ii) State the function of the substance named in b (i) above
Date posted:
May 2, 2017
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Answers (1)
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State the functions of carbohydrates in the human body.
(Solved)
State the functions of carbohydrates in the human body.
Date posted:
May 1, 2017
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Answers (1)
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What is the role of bile salts in digestion in humans?
(Solved)
What is the role of bile salts in digestion in humans?
Date posted:
May 1, 2017
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Answers (1)
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The diagram below represents the lower jaw of a mammal
(Solved)
The diagram below represents the lower jaw of a mammal
a) Name the mode of nutrition of the mammal whose jaw is shown.
b) i) Name the toothless gap labeled K.
ii) State the function of the gap.
c) Name the substance that is responsible for hardening of teeth.
Date posted:
May 1, 2017
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Answers (1)
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Explain how the following factors determine the daily energy requirement in human:(a)Age(b)Occupation(c) Sex
(Solved)
Explain how the following factors determine the daily energy requirement in human:
(a)Age
(b)Occupation
(c) Sex
Date posted:
May 1, 2017
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Answers (1)
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State the function of iron in the human body.
(Solved)
State the function of iron in the human body.
Date posted:
May 1, 2017
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Answers (1)