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Xylem vessel has no cross wall/is hollow while xylem tracheids have holes on cross-wall;xylem vessel is cylindrical,while xylem tracheids are pentagonal or hexagonal in shape.
Belan answered the question on March 12, 2019 at 14:18
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Explain how the various specialized cells are modified to carry out their functions in plants and animals
Date posted: March 12, 2019. Answers (1)
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Explain the various ways in which a typical cell is adapted to its functions
Date posted: March 12, 2019. Answers (1)
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Date posted: March 10, 2019. Answers (1)
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Date posted: March 10, 2019. Answers (1)
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(i)Plants?
(ii)Mammals?(Solved)
Where does meiosis occur in:
(i)Plants?
(ii)Mammals?
Date posted: March 10, 2019. Answers (1)
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State two ways of controlling schistosomiasis.
Date posted: March 10, 2019. Answers (1)
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Date posted: March 10, 2019. Answers (1)
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What is meant by 'survival of the fittest'?
Date posted: March 10, 2019. Answers (1)
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(i)Amoeba.
(ii)Butterfly.(Solved)
State the structures for gaseous exchange in the following organisms:
(i)Amoeba.
(ii)Butterfly.
Date posted: March 10, 2019. Answers (1)
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Distinguish between excretion and homeostasis.
Date posted: March 10, 2019. Answers (1)
- The population of fish pond in a pond was estimated using capture-recapture method.
(i)What equipment was used?
(ii)Describe the procedure used in the experiment.
(iii)State the formula...(Solved)
The population of fish in a pond was estimated using capture-recapture method.
(i)What equipment was used?
(ii)Describe the procedure used in the experiment.
(iii)State the formula for calculating the total population of fish in the pond.
Date posted: March 10, 2019. Answers (1)
- (a)(i)State two reasons why clot formation is important, when a blood vessel is cut.
(ii)Explain what happens if a clot forms in a blood vessel in...(Solved)
(a)(i)State two reasons why clot formation is important,when a blood vessel is cut.
(ii)Explain what happens if a clot forms in a blood vessel in the head.
(b)State two components of the diet that are needed in blood clotting.
(c)Name two proteins that are involved in clot formation.
Date posted: March 10, 2019. Answers (1)
- Elaborate on how soil nutrient composition affects photosynthesis?(Solved)
Elaborate on how soil nutrient composition affects photosynthesis?
Pay attention to how soil nutrient composition with regard to macro and micro nutrients affects photosynthesis, other factors remaining constant.
Date posted: March 9, 2019. Answers (1)
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State the function of the choroid in the human eye.
Date posted: March 8, 2019. Answers (1)
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State two characteristics of living things that are observable in both plants and animals.
Date posted: March 8, 2019. Answers (1)
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Name three structures observed in an animal cell using a light microscope.
Date posted: March 8, 2019. Answers (1)
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State three harmful effects of alcohol (ethanol) to human health.
Date posted: March 8, 2019. Answers (1)
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Name two dental diseases.
Date posted: March 8, 2019. Answers (1)
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State the role of the following hormones.
(i)Follicle stimulating hormone.
(ii)Progesterone.
Date posted: March 8, 2019. Answers (1)