a) R - Sieve pore
S - Cytoplasmic strands, cytoplasmic filaments
Cell labeled T - Companion cells
b) Translocation - Its contractile is nature to push food/ organic products of photosynthesis from one sieve cell to the next
c) It is thickened or lignified to keep vessels strong and open.
johnmulu answered the question on May 2, 2017 at 09:14
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Name two processes that bring about the translocation of manufactured food.
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Name two processes that bring about the translocation of manufactured food.
Date posted:
May 2, 2017
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State two ways in which xylem vessels are adapted to their function.
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State two ways in which xylem vessels are adapted to their function.
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May 2, 2017
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The diagram below represents the pathways of water from the soil into the plant.
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May 2, 2017
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The diagram below represents a transverse section of a young stem
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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
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May 2, 2017
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State two ways in which the human intestinal villus is adapted to its function.
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State two ways in which the human intestinal villus is adapted to its function.
Date posted:
May 2, 2017
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What is the role of bile salts in digestion in humans?
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May 1, 2017
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The diagram below represents the lower jaw of a mammal
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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:
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Date posted:
May 1, 2017
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Answers (1)
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Explain how the carnassial teeth of a dog are adapted to their function.
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Explain how the carnassial teeth of a dog are adapted to their function.
Date posted:
May 1, 2017
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Answers (1)
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Date posted:
May 1, 2017
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The diagram below represents a section though a human tooth
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Date posted:
May 1, 2017
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Date posted:
May 1, 2017
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What happens to excess fatty acids and glycerol in the body
Date posted:
May 1, 2017
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Answers (1)
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The set up below illustrates a procedure that was carried out in the laboratory with a leaf plucked from a green plant that had been growing in sunlight.
(Solved)
The set up below illustrates a procedure that was carried out in the laboratory with a leaf plucked from a green plant that had been growing in sunlight.
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Date posted:
May 1, 2017
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Answers (1)
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A potted plant was kept in the dark for 48 hours. Two leaves X and Y were treated as shown in the diagram below.
(Solved)
A potted plant was kept in the dark for 48 hours. Two leaves X and Y were treated as shown in the diagram below.
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Date posted:
May 1, 2017
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Answers (1)
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The diagram below represents a set - up that was used to investigate certain process in a plant.
(Solved)
The diagram below represents a set - up that was used to investigate certain process in a plant.
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Date posted:
May 1, 2017
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Answers (1)
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The diagram below represents a cell.
(Solved)
The diagram below represents a cell.
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Date posted:
May 1, 2017
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Answers (1)
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The graph below shows the effect of substrate concentration on the rate of enzyme reaction
(Solved)
The graph below shows the effect of substrate concentration on the rate of enzyme reaction
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Date posted:
May 1, 2017
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Answers (1)
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In an experiment to investigate a factor affecting photosynthesis, a leaf of a potted plant which had been kept in the dark overnight was covered with aluminum foil as shown in the diagram below.
(Solved)
In an experiment to investigate a factor affecting photosynthesis, a leaf of a potted plant which had been kept in the dark overnight was covered with aluminum foil as shown in the diagram below.
The set up was kept in sunlight for three hours after which a food test was carried out on the leaf.
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c) Why was it necessary to keep the plant in darkness before the experiment?
Date posted:
May 1, 2017
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Answers (1)