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Thousands of people fled Europe for America in the 19th century due to –
In the 19th century, Europe faced severe poverty, famines, deadly diseases, and unemployment, leading thousands to migrate to America in search of better living conditions. Rapid population growth, industrial changes, and political instability created widespread hardship. America offered new farmlanRead more
In the 19th century, Europe faced severe poverty, famines, deadly diseases, and unemployment, leading thousands to migrate to America in search of better living conditions. Rapid population growth, industrial changes, and political instability created widespread hardship. America offered new farmland, jobs, and economic freedom. Thus, people fled Europe hoping for prosperity and security for their families. Correct option – A. Widespread poverty and deadly diseases.
See lessWhich one option from the following is the appropriate reason for the formation of the Swaraj party?
The Swaraj Party was formed in 1923 by Motilal Nehru and C.R. Das to return to council politics after the withdrawal of the Non-Cooperation Movement. They believed that entering the legislative councils would help expose the failures of British rule and obstruct unjust laws from within. Their strateRead more
The Swaraj Party was formed in 1923 by Motilal Nehru and C.R. Das to return to council politics after the withdrawal of the Non-Cooperation Movement. They believed that entering the legislative councils would help expose the failures of British rule and obstruct unjust laws from within. Their strategy aimed to keep the national movement active through constitutional means while continuing to press for self-governance and Indian participation in administration.
See lessCorrect option – B
Unlike animals, plants do not have any excretory products as they do not eat food. Comment upon the statement with justification.
It is completely wrong to say that plants do not produce any excretory products. However, plants use completely different strategies for excretion than those of the animals. They get rid of these wastes in different manner (any two): i. Oxygen, a photosynthetic waste, is removed through stomata. ii.Read more
It is completely wrong to say that plants do not produce any excretory products. However, plants use completely different strategies for excretion than those of the animals. They get rid of these wastes in different manner (any two):
i. Oxygen, a photosynthetic waste, is removed through stomata.
ii. Excess water is removed by transpiration through stomata.
iii. Other metabolic wastes are either stored in dead cells, resins and gums or are removed through falling of old leaves.
iv. Many waste products are stored in cellular vacuoles
See lessAssertion (A): Vulture will always have the least amount of pesticides in a food chain. Reason (R): Vulture occupies the last trophic level and it gets only 10% of energy of the previous trophic level.
The statement that vultures have the least amount of pesticides is false. In fact, they have the highest concentration due to biological magnification, where toxic substances like pesticides increase as we move up the food chain. The reason, however, is true, as vultures occupy the last trophic leveRead more
The statement that vultures have the least amount of pesticides is false. In fact, they have the highest concentration due to biological magnification, where toxic substances like pesticides increase as we move up the food chain. The reason, however, is true, as vultures occupy the last trophic level and receive only 10% of energy from the previous level. But this reason doesn’t explain the assertion. Therefore, the correct relationship between the two statements is false assertion and true reason. The correct option is (D).
See lessAssertion (A): Tallness of a pea plant is controlled by an enzyme. Reason (R): The gene for that enzyme makes proteins which help the plant to be tall.
The tallness of pea plants is controlled by a gene that produces a specific enzyme responsible for synthesising growth-promoting hormones. The presence of this enzyme results in tall plants, while its absence causes dwarfness. Hence, both the assertion and the reason are true, and the reason correctRead more
The tallness of pea plants is controlled by a gene that produces a specific enzyme responsible for synthesising growth-promoting hormones. The presence of this enzyme results in tall plants, while its absence causes dwarfness. Hence, both the assertion and the reason are true, and the reason correctly explains the assertion. This experiment demonstrates how genes control traits by producing proteins or enzymes that influence the physical characteristics of an organism. The correct option is (A).
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