Q.5) Give reasons for the following questions. (Any 4) 18M] 1. All living organisms depend on biotic and abiotic factors around them 9 2. Cotyledons help the baby plant to grow. 3. Leaves of Mimosa pudica closes its leaves when touched. 4. Sea water is not a potable water. 5. The lower parts of leaves have stomata.IS 6. Ghee does not dissolved in water. 71
Answers
Explanation:
1 .The living organisms in an ecosystem rely heavily on the specific abiotic factors of their environment. For example, because of their need to perform photosynthesis, plants are highly dependent upon abiotic factors such as light, water, carbon dioxide, and minerals for their survival
2. Seawater is toxic to humans because your body is unable to get rid of the salt that comes from seawater.
3. This is an adaptation to prevent excess water loss. Transpiration is the loss of water through stomata, so, more stomata are found on the lower surface to prevent excessive loss of water.
4. The cotyledons are important for the new plant as it begins to grow because they contain the stored food reserves from the seed to give the plant its initial burst of energy to grow.
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1. All organism depend on biotic and abiotic factors as these factors interact with each other and humans take lot of benefits from abiotic factors like air,water ,soil .
2.cotyledons help the baby plant to grow as these are the storage of reserve materials so new plant or seeds used these cotyledons as reserve food material for their growth and metabolism.and other and essential activities.
3.leaves closed after touching it is due to change in the turgor pressure of the leaves after touching.
4.it is not potable for drinking because it contains lot of metals ion ,high concentration of salt due to which when we drink they cause exosmosis of the cells inside the body.