Which one of the following pairs is correctly matched?

(1)	Rhizobium	- Parasite in the roots of leguminous plants
(2)	Mycorrhizae	- Mineral uptake from soil
(3)	Yeast	- Production of biogas
(4)	Myxomycetes	- The disease ring worm

Which one of the following categories of organisms do not evolve oxygen during photosynthesis?

(1) Red algae

(2) Photosynthetic bacteria

(3) C₄ plants with Kranz anatomy

(4) Blue green algae

Which one of the following is correctly matched regarding an Institute and its location?

(1) National Institute of Virology - Pune

(2) National Institute of Communicable Diseases-Lucknow

(3) Central Drug Research Institute-Kasauli

(4) National Institute of Nutrition-Mumbai

Myxomycetes are

(1) saprobes or parasites, having mycelia, asexual reproduction by fragmentation, sexual reproduction by fusion of gametes

(2) slimy mass of multinucleate protoplasm, having pseudopodia-like structures for engulfing food, reproduction through fragmentation or zoospores

(3) prokaryotic organisms, cellular or acellular, saprobes or autotrophic, reproduce by binary fission

(4) eukaryotic, single-celled or filamentous, saprobes or autotrophic, asexual reproduction by fusion of two cells or their nuclei

In prokaryotes, chromatophores are

(1) specialized granules responsible for colouration of cells

(2) structures responsbile for organizing the shape of the organism

(3) inclusion bodies lying free inside the cells for carrying out various metabolic activities

(4) internal membrane systems that may become extensive and complex in photosynthetic bacteria

Among rust, smut and mushroom, two of them 

(1) are pathogens

(2) are saprobes

(3) bear ascocarps

(4)  bear basidiocarps

Which of the following is correct match?

Which one of the following pairs is not correctly matched?

The growth curve of bacterial population in lab is plotted against time. What will be the shape of graph?

(1) Sigmoid

(2) Hyperbolic

(3) Ascending straight line

(4) Descending straight line

The outermost limiting layer of mycoplasma is made up of

(1) cell wall

(2) cell membrane

(3) mucilaginous sheath

(4) slime layer