Excretion is removal of harmful cellular metabolic wastes from organisms while egestion is the removal of undigested food from the alimentary canal.
Belan answered the question on February 22, 2019 at 12:11
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State how the gills of a bony fish are structurally adapted for gaseous exchange.
Date posted: February 22, 2019. Answers (1)
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What are the differences between blood in the pulmonary artery and pulmonary vein?
Date posted: February 22, 2019. Answers (1)
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(ii)What common role do the two compounds play in the cell?
(B)State two ways in which the external structure of...(Solved)
(A)(i)Give one difference between proteins and lipids.
(ii)What common role do the two compounds play in the cell?
(B)State two ways in which the external structure of a leaf is adapted for photosynthesis.
Date posted: February 22, 2019. Answers (1)
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(i)Broad,large leaves.....
(ii)Narrow needle-like leaves....(Solved)
A certain plant had broad and large leaves. While another had narrow needle like leaves. State the natural habitat of each of the plants.
(i)Broad,large leaves....
(ii)Narrow needle-like leaves....
Date posted: February 22, 2019. Answers (1)
- The scientific name for housefly is Musca domestica.
(i)State the name of the genus of the housefly.
(ii)State the system that has been used in naming the...(Solved)
The scientific name for housefly is Musca domestica.
(i)State the name of the genus of the housefly.
(ii)State the system that has been used in naming the housefly.
Date posted: February 22, 2019. Answers (1)
- State the function of each of the following parts of a light microscope:
(i)Mirror
(ii)Eye piece lens
(iii)Fine adjustment knob(Solved)
State the function of each of the following parts of a light microscope:
(i)Mirror
(ii)Eye piece lens
(iii)Fine adjustment knob
Date posted: February 22, 2019. Answers (1)
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(i)Respiration
(ii)Excretion(Solved)
(A)State the importance of each of the following to the life of organisms:
(i)Respiration
(ii)Excretion
Date posted: February 22, 2019. Answers (1)
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Explain the three types of protozoans found in the soil habitat.
Date posted: February 19, 2019. Answers (1)
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Outline four biological importance of mycorrhizal associations in an ecosystem.
Date posted: February 19, 2019. Answers (1)
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Explain why amoeba absorbs excess water and it does not burst, while a animal cell burst when it absorbs excess water.
Date posted: February 19, 2019. Answers (1)
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Explain the defensive behavior of termites.
Date posted: February 18, 2019. Answers (1)
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a)Excretory system.
b)Body plan.
c)Digestive system.
d)Nematodes musculature.(Solved)
Discuss parasitic nematodes under the following subheadings:
a)Excretory system.
b)Body plan.
c)Digestive system.
d)Nematodes musculature.
Date posted: February 18, 2019. Answers (1)
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Date posted: February 18, 2019. Answers (1)
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Briefly describe nervous system in Nematodes.
Date posted: February 18, 2019. Answers (1)
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Discuss the three types of parasitic nematodes.
Date posted: February 18, 2019. Answers (1)
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Date posted: February 18, 2019. Answers (1)
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Explain why xylem vessels have dead cells
Date posted: February 18, 2019. Answers (1)
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Explain conditions when most soil microorganisms are active in the soil ecosystem.
Date posted: February 18, 2019. Answers (1)
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Discuss animal eat plant relationships using Fungi and Nematodes as an example in nitrogen fixation.
Date posted: February 18, 2019. Answers (1)
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Discuss the soil food web found in most natural ecosystems.
Date posted: February 18, 2019. Answers (1)