ICSE biology
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Question
Mention one significant difference between each of the following:
Exarch xylem and Endarch xylem
Solution
| Exarch Xylem | Endarch Xylem |
| When the development of xylem takes place towards the centre of the axis, or in other words, the protoxylem develops towards the periphery, it is called centripetal xylem, and the strand is said to be exarch xylem. | When the development of xylem is towards periphery of the axis, or in other words, protoxylem elements develop towards the centre, it is called centrifugal xylem, and the strand is said to be endarch xylem. |
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Question
Mention one significant difference between each of the following:
Neuron and Nephron
Solution
| Neuron | Nephron |
| Neuron is electrically excitable cell in the nervous system that process and transmits information. | The nephron is the structural and functional unit of kidney, also known as renal tubule or uriniferous tubule. |
Question
Mention one significant difference between each of the following:
Dormancy and Quiescence
Solution
| Dormancy | Quiescence |
| The state of inhibited growth of seed or other plant organs as a result of internal causes is usually called dormancy. | Suspension of growth due to exogenous control, such as a change in environmental conditions and is referred to as quiescence. |
Question
Mention one significant difference between each of the following:
Tendon and Ligament
Solution
| Tendon | Ligament |
| Tendon has predominance of collagen fibres and joins the skeletal muscles to the bones. | Ligament has predominance of elastic fibres and connects bones to bones at the joints. |
Question
Mention one significant difference between each of the following:
Somatic Mutation and Heritable Mutation
Solution
| Somatic Mutation | Heritable Mutation |
| Somatic Mutation occurs in somatic cells and is not inheritable. | Heritable mutation occurs in sex cells. |
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Mock Test Series
Mock Test Series