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प्रश्न
Why do farmers grow many fruits and vegetable crops inside large greenhouses? What are the advantages to the farmers?
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उत्तर
A greenhouse is a closed facility used to grow fruits and vegetables. Its framework supports a translucent outer shell made of glass or plastic. It is a sheltered area where environmental conditions can be controlled to promote optimal plant development.
Farmers are increasingly using the greenhouse approach because it allows them to quickly harvest fruits and vegetables without worrying about unpredictable weather conditions.
The main advantages of the greenhouse to the farmers are:
- The greenhouse coverings have the ability to modify the direction of the sun's rays, resulting in an even. distribution throughout the entire surface, benefiting the entire greenhouse and avoiding direct solar rays falling on the plants.
- Farmers can manage and establish the ideal cultivation environment in a greenhouse. This enhances productivity.
- Greenhouses help protect crops from pests, vermin, and illnesses, lowering the risk of crop failure.
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संबंधित प्रश्न
Match the items given in Column I with those in Column II:
| Column I | Column II |
| Chlorophyll | Bacteria |
| Nitrogen | Heterotrophs |
| Amarbel | Pitcher plant |
| Animals | Leaf |
| Insects | Parasite |
Name one organism each having saprophytic, parasitic and holozoic modes of nutrition.
Define saprophyte.
Why is nutrition necessary for an organism?
Name the mode of nutrition in roundworm.
Name the mode of nutrition in Plasmodium.
Describe the process of nutrition in Amoeba. Draw labelled diagrams to show the various steps in the nutrition in Amoeba.
The process of obtaining food by Amoeba is known as:
(a) dialysis
(b) cytokinesis
(c) phagocytosis
(d) amoebiasis
In which of the following groups of organisms the food material is broken down outside the body and then absorbed?
One of the following organisms can live without oxygen of air. This organism is
(a) Amoeba
(b) Yak
(c) Yeast
(d) Leech
