Dikaryotisation (n + n) in Agaricus is brought about by
(1) clamp connections
(2) somatogamay between two hyphae of different strains
(3) Both (1) and (2) are correct
(4) basidiospores
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'Red tide' is caused by
(1) Gonyaulax
(2) Ceratium
(3) Triceratium
(4) All of these
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Which one of the following shows heterothallism?
(1) Rhizopus
(2) Bacterium
(3) Cycas
(4) Ricinus
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The common characteristic showning by mushroom, smut and rust
(1) is characterised by presence of basidiocarps
(2) is characterised by presence of ascocarps
(3) all are pathogen
(4) all are saprophytic in nature
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Which one exhibits the character of a protozoan during one phase of its life cycle and character of fungi in another phase of its life cycle?
(1) Water moulds
(2) Psilophytes
(3) Slime moulds
(4) Diatoms
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Spirochaetes is/are
(1) a class of viruses
(2) myxobacteria
(3) spiral-shaped bacteria
(4) richittsias
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Which of the following organisms completely lack cell wall, they are the smallest living cells known and can survive without oxygen?
(1) Mycoplasma
(2) Euglenoids
(3) Slime moulds
(4) All of these
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Spirochaetes is are
(1) a class of insects
(2) a class of viruses
(3) bacteria
(4) fungi
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The metachromatic granules are
(1) present in plants cell at metaphase stage
(2) inclusion bodies in bacteria
(3) produced in insects during metamorphosis
(4) chromatophores in animals skin
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