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Farmers in a particular region were conc...

Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might caused decrease in the yield. Which treatment could be most be most beneficial to obtain maximum seed yield?

A

Frequent irrigation of the crop

B

Treatment of the plants with cytokinins alongwith a small dose of nitrogenous fertilizer (

C

Removal of all yellow leaves and spraying the remaining green leaves with 2,4,5trichlorophenoxy acetic acid

D

Application of iron and magnesium to promote synthesis of chlorophyll

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The correct Answer is:
D
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Farmers in aparticlular region were concerned that pre mature yellowing of leaves of a pluser crop might cause decrease in the yield. Which treatment could be most benefical to obtain maximum seed yield?

Farmers in a particular region were concerned that premature yellowing of leaves of a pulse crop might cuuse dectease in the yild .Which treatment could be most benefical top obtain maxmum seed yield

A passage is given with five questions following it. Read the passage carefully and select the best answer to each question out of the given four alternatives. A plant species that has outlived the dinosaurs, the Cycas circinalis, a 'living fossil' found only in the Western Ghats, faces the threat of extinction due to the over-harvesting of its leaves for commercial purposes. While there are nine species of Cycas found across the country, almost all of which are classified as being endangered, the Cycas circinalis, found at altitudes between 1,500 and 1,800 meters, has traditionally been used by tribal communities for a variety of purposes. In the Nilgiris and other parts of the Western Ghats, where the plant is found, the seed is sometimes soaked in water (to remove a strong poison contained within) and ground into flour, after which it is eaten, while the seed is also said to be used in traditional, indigenous medicine. However, over the last few decades, the leaves of the circinalis, which are used for ornamental purposes like for setting up 'pandals' have been harvested in bulk from the remaining plants, often leading to them becoming stunted and unable to reproduce and increase in number. With a single leaf costing as much as Rs 25, the economic incentive to completely strip the plant of all its leaves in one harvest remains high for most people. Shiny Miriam Rehel, Programme Co-ordinator for the Biodiversity Restoration Programme at Keystone Foundation, speaking to The Hindu, said that circinalis plants do not grow in large numbers in the wild, and the over exploitation of the leaves from the plant has caused a further decline over the last few decades. The Keystone Foundation has been trying to promote the conservation of the species by encouraging forest-dependent communities to sustainably harvest the leaves from the circinalis. "We collect the seeds from the wild and raise it at our nursery on the Keystone campus. We then encourage farmers and tribal communities to grow the plants near to their dwellings or land holdings," said Ms. Rehel, who added that the conservation of the species needs to be assured through working with local communities, creating awareness of sustainably harvesting the leaves and ensuring that the plant itself remains healthy. Speaking of their importance, Ms. Rehel said that not only the conservation of the endangered circinalis important to protect the livelihood of tribal communities, but also for biodiversity. She said that the circinalis is an ideal host plant for ants, cupid butterflies and bats, and added that their protection will be a vital aspect of protecting the ecology of the Western Ghats in the long run. Why cycas circinalis faces the threat of extinction?

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NEET-MCQs
  1. Farmers in a particular region were concerned that pre-mature yellowin...

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  2. The first step for initiation of photsynthesis will be:

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  3. When the plants are grown in magnesium deficient but urea rich soil, t...

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  4. For the synthesis of one glucose molecule the calvin cycle operates fo...

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  5. Plants take zinc in the form of :

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  6. The bactria generally used for genetic engineering is :

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  7. For assimilation of one CO(2) molecules, the energy required in form o...

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  8. The first carbon dioxide acceptor in C(4)-plants is

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  9. According to mendeslim which character is showing dominance:

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  10. Due to the cross between TTRr xx ttrr the resultant progenies showed h...

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  11. Which is showing accurate pairing

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  12. Which is expressing right appropriate pairing:

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  13. Enzymes are not found in:

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  14. Virus are living because:

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  15. If the apical bud has been removed, then we observe:

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  16. Which hormone is responsible for fruit ripening:

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  17. Eight nucleated embryo sac is:

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  18. Which is the cause of damage to relative biological effectiveness:

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  19. Which is the reason for highest biomass in aquatic ecosystem-

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  21. Endosperm is formed during the double fertilization by

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