Answer: Dwarf varieties can tolerate higher doses of fertilizers without lodging (falling over), allowing greater biomass and grain production.
- A Dwarf crop plants generally consume considerably less water overall and consequently survive drought conditions noticeably better
- B Dwarf varieties can tolerate higher doses of fertilizers without lodging (falling over), allowing greater biomass and grain production
- C Dwarf plant varieties are considerably easier for farmers to harvest, both manually by hand and also using mechanical equipment
- D Dwarf crop varieties characteristically develop noticeably deeper root systems that absorb considerably more nutrients from the soil
Correct answer: B. Dwarf varieties can tolerate higher doses of fertilizers without lodging (falling over), allowing greater biomass and grain production
Explanation: Semi-dwarf varieties can tolerate the application of higher amounts of fertilizers. Tall varieties tend to lodge (fall over) under the weight of grain when heavily fertilized. The dwarf stature with sturdy stems prevents lodging, allowing higher fertilizer application and thus greater grain yield - the key to the Green Revolution.
Different fish species occupy different feeding depths in the same pond without competing for food: Catla feeds near the surface, Rohu in the middle zone, and Mrigal or common carp at the bottom - letting a single pond support far more total fish than one species alone.
Concept context
Learn about animal husbandry, plant breeding, tissue culture, biofortification, and single cell protein.
Read the full Strategies for Enhancement in Food Production notes →