Tag: cropping patterns

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Questions Related to cropping patterns

Multiple choice evs whose forests? improved methods of agriculture cropping patterns food for all conservation of forest and wildlife wildlife deforestation and conservation

Removal of weeds from cultivated fields during the early stages _____

  1. Crop growth is essential for a good harvest.

  2. Just for spending time

  3. For new crop

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Removing weeds during early crop growth stages is essential for good harvest because weeds compete most aggressively with young crops. If weeds aren't removed early, they can stunt or kill crop plants before they establish. The sentence structure is awkward, but the meaning is that early weed removal benefits crop growth.

Multiple choice evs whose forests? improved methods of agriculture cropping patterns food for all conservation of forest and wildlife wildlife deforestation and conservation

If weeds and pests are not controlled at the appropriate time then ____

  1. They can damage the crops so much that most of the crop is lost

  2. They can increase the crops so much that most of the crop is lost

  3. They can damage the crops so much that most of the crop is gain

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Weeds compete for resources, and pests eat crops - together they can destroy most of the harvest if uncontrolled. This is why integrated pest management and timely weed control are essential practices in agriculture to prevent catastrophic crop losses.

Multiple choice evs whose forests? improved methods of agriculture cropping patterns food for all conservation of forest and wildlife wildlife deforestation and conservation

Which of the following groups include only weeds?

  1. Parthenium, Xanthium and Cyperinus

  2. Xanthium, Parthenium and Maize

  3. Convolvulus, Balsam and Paddy

  4. Amaranthus, Convolvulus and Chenopodium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Weeds can be defined as the unwanted plants that grow in the field and harm the desired crops. Parthenium is the flowering plant which can cause an allergy is the most important weed of corn and wheat field. Xanthium is the ruderal weed of maize. Cyperinus is the most invasive weed found throughout the world. It is the weed of rice field. 

Multiple choice evs whose forests? improved methods of agriculture cropping patterns food for all conservation of forest and wildlife wildlife deforestation and conservation

Which of the following is also called unwanted plants?

  1. Weeds

  2. Shrubs

  3. Grasses

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

Weeds are the unwanted or undesirable plants as they compete with desirable crops in the field for nutrients, sunlight and interfere with the growth of crops.

So, the correct answer is option A.

Multiple choice evs whose forests? improved methods of agriculture cropping patterns food for all conservation of forest and wildlife wildlife deforestation and conservation

Herbicides are chemicals which control

  1. Insects

  2. Fungi

  3. Weeds

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

Herbicides are chemical which control weeds. These are also called as weedicides. Glufosinate ammonium is a broad spectrum herbicides. A 2,4-D (2,4-Dichlorophenoxyacetic acid) is a plant hormone that acts as herbicide. It kills the broadleaf weeds that harm the plants by causing uncontrolled growth in them.

Thus, the correct answer is option C.

Multiple choice evs whose forests? improved methods of agriculture cropping patterns food for all conservation of forest and wildlife wildlife deforestation and conservation

Which of the following chemical/s cannot be used as a weedicide?

  1. Dalapon

  2. Metachlor

  3. 2-4- Dichlorophenoxy-acetic acid.

  4. Colchicine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A.Dalapon - used as a weedicide
B.Metachlor - used as a weedicide
C.2-4-Dichlorophenoxy acetic acid - used as a weedicide and hormone.
D.Colchicine  - used as a mutagen . It is a mitotic poison, it inhibits spindle formation that results in polyploidy of a cell. This can be detrimental for the major crop. So it isn't used as a weedicide.
So, the correct option is 'Colchicine'.
Multiple choice evs whose forests? improved methods of agriculture cropping patterns food for all conservation of forest and wildlife wildlife deforestation and conservation

The best time for removal of weeds is before they produce flowers and seeds.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Removal of weed (or weeding) is done before weeds flower because if they flower they will also produce seeds and finally result in the dispersal of the seeds which makes it difficult to control the weeds because each seed will produce a new weed plant.

So the correct option is ' True ' .

Multiple choice evs whose forests? improved methods of agriculture cropping patterns food for all conservation of forest and wildlife wildlife deforestation and conservation

Which of the following statement can be related to weed?

  1. A weed is a plant considered desirable in a particular situation

  2. A weed is a plant considered undesirable in a particular situation

  3. A weed is a plant considered undesirable in all situations.

  4. A weed is a plant considered desirable in a all situations.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A weed is a wild plant that grows in an unwanted region and is a competition to cultivated plants. They are also known as invasive plants. Weeds typically produce a large number of seeds and propagate enormously. They are highly competitive, persistent, pernicious and may interfere negatively with human activities. It may have good properties also. But the undesirable properties outweigh the desirable properties at a given place. 

So the correct option is 'A weed is a plant considered undesirable in a particular situation'.