Q. No.Cyanobacteria do not possess which feature?
(1) Unicellular
(2) Colonial or filamentous
(3) Form blooms in polluted water bodies
(4) Only marine algae
(1) Unicellular
(2) Colonial or filamentous
(3) Form blooms in polluted water bodies
(4) Only marine algae
The specialised cells to fix atmospheric nitrogen is called as
1. Heterocyst
2. Heterocyte
3. Heterocoem
4. Heterolog
Find the incorrect match.
(1) Heterocyst-Archaebacteria
(2) Gelatinous sheath- BGA
(3) Methanogen- Biogas
(4) Chlorella- protista
Chemosynthetic autotrophic bacteria does not help in recycling of
(1) Nitrogen
(2) Iron
(3) Sulphur
(4) Mangnese
Chemosynthetic bacteria does not use which inorganic substrate?
(1) Nitrites
(2) Nitrates
(3) Chlorides
(4) Both (1) and (2)
Chemosynthetic autotrophs derive energy by
(1) By sunlight
(2) By oxidation of inorganic substances
(3) By reduction of inorganic substances
(4) By reduction followed by oxidation of inorganic substances
The majority of heterotrophic bacteria are
1. Decomposers
2. Autotrophs
3. Lithotrophs
4. Organotrophs
Lactobacillus comes under which category
(1) Autotrophs
(2) Lithotrophs
(3) Organotrophs
(4) Heterotrophs
Leguminous plants have bacteria with which kind of mode of nutrition-
(1) Heterotrophs
(2) Autotrophs
(3) Lithotrophs
(4) Organotrophs
Which of the following is not a bacterial disease
(1) Citrus canker
(2) Cholera
(3) Plague
(4) Mumps
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