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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
Name the following:
A parasitic plant with yellow, slender and tubular stem.
Define saprophytic nutrition.
Define parasitic nutrition.
Define saprophyte.
Define parasite.
In which of the following groups of organisms the food material is broken down outside the body and then absorbed?
| The organisms A, B and C can obtain their food in three different ways. Organism A derives its food from the body of another living organism which is called its D, without killing it. The organism B takes in the solid food by the process of ingestion, digests a part of this food and throws out undigested food in the process called E. The organism C obtains its food from dead and decaying plants. |
- What is the mode of nutrition of (i) organism A (ii) organism B, and (iii) organism C?
- What is the organism like D called?
- Name the process E.
- Give one example each of organisms like (i) A (ii) B, and (iii) C.
- What is the general name of three modes of nutrition exhibited by organisms A, B and C?
In one of the following organisms, the gaseous exchange during respiration does not take place through cell membrane/skin. This organism is ______.
List two differences between 'Holozoic nutrition' and 'Saprophytic nutrition'. Give two examples of each of these two types of nutrition.
Match the organisms given in Column I with their mode of nutrition given in Column II.
| Column 1 | Column II | ||
| (a) | Mango tree | (i) | Insectivorous plant |
| (b) | Mushroom | (ii) | Heterotroph |
| (c) | Pitcher plant | (iii) | Autotroph |
| (d) | Cuscuta | (iv) | Saprophyte |
| (e) | Elephant | (v) | Parasitic |
