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Answers
Explanation:
a) Flow of nutrients through an ecosystem is cyclic as the nutrients move from one trophic level to another trophic level all the way up and then back down. ... The secondary consumers feed on primary consumers resulting in the passage of nutrients from the primary consumers to the secondary consumers.
b) Venation is the arrangement of veins in the lamina of the leaf. Two types of venation are reticulate venation and parallel venation.
When the veins are irregularly distributed to form a channel, it is known as Reticulate Venation. It can be seen in tulsi, coriander (dhania), china rose, hibiscus, mango, etc. When the veins are parallel and do not form a network, it is known as Parallel Venation. It can be seen in wheat, maize, grass, banana, bamboo, etc.
c) Key Points on Carbon Cycle
Carbon cycle explains the movement of carbon between the earth's biosphere, geosphere, hydrosphere and atmosphere. ... Carbon atoms are then released as carbon dioxide when organisms respire. The formation of fossil fuels and sedimentary rocks contribute to the carbon cycle for very long periods.
Answer:
a)Flow of nutrients through an ecosystem is cyclic as the nutrients move from one trophic level to another trophic level all the way up and then back down. ... The secondary consumers feed on primary consumers resulting in the passage of nutrients from the primary consumers to the secondary consumers.