ICSE biology
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Mention one significant difference between each of the following:
Heartwood and sapwood
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Heart wood |
Sap wood |
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It is hard, durable and of dark colour. |
It is soft and light coloured. |
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Mention one significant difference between each of the following:
Active absorption and Passive absorption
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Active Absorption |
Passive Absorption |
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Energy is spent on the process. |
It does not require expenditure of energy. |
Mention one significant difference between each of the following:
Mitral valve and Semilunar valve
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Mitral valve |
Semilunar valve |
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Prevent the backflow of blood from the ventricle to the auricle. |
Prevents the backflow of blood from the arteries to the ventricle. |
Mention one significant difference between each of the following :
Morula and Blastula
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Morula |
Blastula |
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It is a solid spherical mass of blastomere cells which are formed as a result of cleavage division. |
It is formed due to the rearrangement of blastomere cells of morula and contains a central cavity. |
Answer the following
What is pulvinus?
Pulvinus is an enlarged section at the base of a leaf stalk in some plants, which is subject to changes of rigidity leading to movements of the leaf or leaflet like the sleep movements in plants.
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Mock Test Series
Mock Test Series