Tag: water conservation and irrigation

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Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation

Stopage of reproduction in an organism by creating hurdle in its biology or physiology or its distraction by use of another organism is known as

  1. Predation

  2. Competition

  3. Biological control

  4. Physiological control
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

(c) Biological control methods include using natural predators of pests, using resistant varieties, crop rotation, etc.

Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation

When a natural predator (living organism) is applied on the other pathogen organisms to control them, this process is called as:

  1. Biological control

  2. Genetic engineering

  3. Artificial control

  4. Confusion technique
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Indiscriminate eradication of pests is undesirable because without them the beneficial predatory and parasitic organisms which depend upon them for food would also be eliminated. The biocontrol method of pest and pathogen control involves use of viruses, bacteria and other insects (which are their natural predators and pests).

Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation

In our country, vast tracts of forest are cleared and a single species of plant is cultivated. This practice promotes

  1. biodiversity in the area

  2. monoculture in the area

  3. growth of natural forest

  4. preserves the natural ecosystem in the area
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cultivating a single species of plant over a large area is the definition of monoculture, which typically reduces biodiversity compared to a natural forest ecosystem.