Crop improvement — task. Biology CBSE Live product, Class 9 (2025-26).

Choose the correct answer:

1. The need for crop variety improvement includes___________.

to increase crop yield and productivity
to improve crop resistance against biotic and abiotic stress
to shorten crop maturation
to achieve required agronomic characteristics
all of the above

2. Macronutrients to the plants are supplied through _______.

water
air
soil
all of the above

Login or Fast registration

Exit to the topic

Did you find an error?