CLASS IX IMPROVEMENT IN FOOD RESOURCES

Crossing between genetically dissimilar plants to obtain crops having useful characteristics

• Genetically modified organisms

• Hybridization

• Agronomics

• None of them

The desirable agronomic characters improved using crop variety programmes are called

• Tallness and dwarfness

• draught

• salinity

• cold

Cyperinus and Parthenium are types of

• Diseases

• Pesticides

• weeds

• pathogens

Mullets, prawns, mussels are examples of

• Fresh-water fishes

• Finned fishes

• Shell fishes

• Marine fishes

 What is the process of growing two or more crops in a definite pattern?

• Crop rotation

• Inter-cropping

• Mixed cropping

• Organic cropping

Leghorn is related to

• Apiculture

• Dairy farming

• Poultry

• Pisciculture

The management and production of fish is called

• Pisciculture

• Apiculture

• Sericulture

• Aquaculture

What is the other name for Apis cerana indica?

• Indian Buffalo

• Indian bee

• Indian cow

• Indian horse

Nitrogen, phosphorus and potassium are examples of

• Micro-nutrients

• Macro-nutrients

• Fertilizers

• Both i and ii

Rohu and catla are types of

• Freshwater fish

• Marine water fish

• Both I and II

• None of these