Physical removal of large and small from the sewage through filtration and sedimentation is called:

Which of the following will begin fixing nitrogen only after they stop reproducing?

Which of the followings is also called sac fungi that live parasitically and in various habitats?

Pollution from animal excreta and organic waste from kitchen can be most profitably minimized by

The most important of the symbiotic nitrogen fixing bacteria which forms nodules on the roots of legume plants is

The most common fungal partners of mycorrhiza are ______ species.

Human insulin is being commercially produced from a transgenic species of

Cyanobacteria serves as important biofertilizers in the fields of

A patient brought to a hospital with myocardial infarction is normally immediately given

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorized as