AIPMT 2005 | NEET Year Wise Previous Years Questions

MCQ (Single Correct Answer)

Basophilic prokaryotes

grow and multiply in very deep marine sediments

occur in water containing high concentrations of barium hydroxide

readily grow and divide in sea water enriched in any soluble salt of barium

grow slowly in highly alkaline frozen lakes at high altitudes.

MCQ (Single Correct Answer)

There exists a close association between the alga and the fungus within a lichen. The fungus

provides protection, anchorage and absorption for the algae

provides food for the alga

fixes the atmospheric nitrogen for the alga

releases oxygen for the alga

MCQ (Single Correct Answer)

Top-shaped multiciliate male gametes and the nature seed which bears only one embryo with two cotyledons, are characterised features of

polypetalous angiosperms

gamopetalous angiosperms

MCQ (Single Correct Answer)

Auxospores and hormogonia are formed, respectively, by

some diatoms and several cyanobacteria

some cyanobacteria and many diatoms

several cyanobacteria and several diatoms

several diatoms and a few cyanobacteria.