A.

Pseudomonas

Genetically engineered micro-organism called Pseudomonas putida is used in bioremediation of oil spills. It is also known as 'Chakarborty's super bug.

B.

Glomus

Nostoc is a blue-green algae capable of fixing nitrogen. 
Glomus is associated with endomycorrhiza.
Agaricus or mushroom is an edible fungus of class-Basidiomycetes.
Rhizobium is a symbiotic nitrogen -fixing bacterium found in the root nodules of leguminous plants.

A.

cell membrane structure

Archeabacteria different from eubacteria in that eubacteria has two cell membrane composed mainly of glycerol - ester lipids, while archaebacteria have a membrane made up of glycerol - ether lipid. Ether lipids are chemically more resistant then ester lipids. This stability help archaebacteria survive at high temperature and in very acidic or alkaline environment. 

B.

Cycas

Cyanobacteria within the coralloid roots of Cycas are chemoheterotrophic and specifically adapted to life in symbiosis. Only a few species of cyanobacteria form associations with Cycas. Pinus is gymnosperm.Equisetum belongs to vascular plants and to horse tail family.Psilotum belongs to division -Pteridophyta and is a fern like a plant.

C.

Morels and truffles are poisonous mushrooms

All statements are correct, except statement (c), which can be corrected as
Morels and truffles are edible and members of Ascomycetes in fungi.