Home
Class 9
BIOLOGY
The material of biological origin, which...

The material of biological origin, which is used to maintain and improve soil fertility is

A

green manures

B

biofertilisers

C

bioinsecticides

D

both (a) and (b).

Text Solution

Verified by Experts

The correct Answer is:
D
Green manures are added to the soil to increase the productivity. Manure is of natural origin. The presence of nutrients in manure have a great role in increasing soil fertility. Biofertilisers are biological organisms which enrich the soil with nutrients, e.g., Rhizobium, a nitrogen fixing bacteria present as symbiotic association with root nodules of leguminous plants.
Promotional Banner

Topper's Solved these Questions

  • IMPROVEMENT IN FOOD RESOURCES

    MTG IIT JEE FOUNDATION|Exercise Exercise (Multiple Choice Questions) (LEVEL - 2)|19 Videos

  • IMPROVEMENT IN FOOD RESOURCES

    MTG IIT JEE FOUNDATION|Exercise Exercise (Assertion & Reason Type)|10 Videos

  • IMPROVEMENT IN FOOD RESOURCES

    MTG IIT JEE FOUNDATION|Exercise NCERT Saction |9 Videos

  • FOOTSTEPS TOWARDS NEET

    MTG IIT JEE FOUNDATION|Exercise MULTIPLE CHOICE QUESTIONS |90 Videos

  • NATURAL RESOURCES

    MTG IIT JEE FOUNDATION|Exercise Olympiad/HOTS Corner|11 Videos

Similar Questions

Explore conceptually related problems

Crop rotation enriches soil fertility.

Which one of the following is not used to increase soil fertility ?

Which biotic component is involved in maintaining soil fertility ?

The msot resistant biological material is present in the

Describe the role of symbiotic nitrogen fixing bacteria in the improvement of soil fertillity.

The paste of a white material in water is used to maintain a fractured bone fixed in place. The white material used is called

They help in increasing soil fertility

Fire reduces soil fertility through