Due to which of the following organism, yield of rice is increased
Anabena
Bacillus popilliae
Sesbania
Bacillus polymena
If wheat field is inoculated with Rhizobium
A water fern, which is used as a green manure in rice fields is
The nitrogen fixing symbiotic organism present in Azolla is
Mycorrhiza is a symbiotic association between
Match the columns :
Column - $I$ | Column - $II$ |
$(a)$ Mycrrohiza | $(1)$ Rhizobium |
$(b)$ Bt | $(2)$ Nucleopolyhydro virus |
$(c)$ Root nodules | $(3)$ Phosphorus |
$(d)$ Baculo virus | $(4)$ Bt -Cotton |