Crop production

A biological control uses a

• Predator to control a pest

• Pest to control a predator

Which chemical controls pests

• Fertiliser

• Pesticide

• Herbicide

• Fungicide

The process of loosening the husk from the grain is called________

• Winnowing

• Harvesting

• Threashing

• Weeding

The process of rearing silkworms on a large scale is called______________

• Vermiculture

• Pisciculture

• Sericulture

• Apiculture

WHEN YOU WILL PUT SEEDS IN WATER ,WHAT IS TRUE ABOUT DAMAGED SEEDS?

• THEY WILL SINK

• THEY WILL FLOAT

• THEY ARE HEAVIER

• ALL OF THESE

IDENTIFY THE PLOUGH FROM THE FOLLOWING FIGURES

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• 
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Harvesting is a process of

• separating grains from stalk
• preparing soil for sowing seeds
• collecting ripened crops from the field
• removing undesired plants from the crop field

The plant roots contain nitrogen fixing bacteria _________________.

• Orange

• Pea

• Mango

• Tomato

Why is it necessary to maintain distance between two crops while the sowing of seeds?

• To prevent overcrowding

• To prevent competition between the crops for sunlight, nutrients, water, etc.

• Because its fun

• To protect it from weeds

Supplying water to crops in the fields at specific intervals is called ________

• crop rotation

• fertilizing

• weeding

• irrigation