121. Photosynthetic bacteria have
pigments in
(1) chromoplasts
(2) leucoplasts
(3) chromatophores
(4) chloroplasts
122. Due to which of the following
organisms, yield of rice has been increased?
(1) Sesbania
(2) Anabaena
(3) Bacillus polymexa
(4) Bacillus popilliae
123. Yeast Saccharomyces cerevisiae is
used in the industrial production of
(1) ethanol
(2) citric acid
(3) butanol
(4) tetracycline
124. Which one of the following
micro-organisms is used for production of citric acid in industries?
(1) Rhizopus nigricans
(2) Penicillium citrinum
(3) Lactobacillus bulgaris
(4) Aspergillus niger
125. Puccinia forms
(1) uredia and aecia on barberry leaves
(2) uredia and aecia on wheat leaves
(3) uredia and pycnia on barberry leaves
(4) uredia and telia on wheat leaves
126. In fungi stored food material is
(1) sucrose
(2) glycogen
(3) glucose
(4) starch
127. A virus can be considered a living
organism because it
(1) reproduces (inside the host)
(2) responds to touch stimulus
(3) can cause disease
(4) respires
128. Enzymes are absent in
(1) Algae
(2) Cyanobacteria
(3) Fungi
(4) Viruses
129. A good green manure in rice fields
is
(1) Salvinia
(2) Aspergillus
(3) Mucor
(4) Azolla
130. In prokaryotes, the genetic
material is
(1) linear DNA without histones
(2) linear DNA with histones
(3) circular DNA without histones
(4) circular DNA with histones
131. What is true for cyanobacteria?
(1) Non-oxygenic with nitrogen
(2) Oxygenic with nitrogenase
(3) Non-oxygenic without nitrogenase
(4) Oxygenic without nitrogenase
132. Extra-nuclear inheritance occurs in
(1) Phenylketonuria
(2) Killer strain in Paramecium
(3) Tay sach disease
(4) Colour blindness
133. Interferons are synthesized in
response to
(1) Viruses
(2) Mycoplasma
(3) Fungi
(4) Bacteria
134. Industrial production of ethanol
from starch is brought about by
(1) Azotobacter
(2) Saccharomyces
(3) Penicillium
(4) Lactobacillus
135. Black rust of wheat is caused by
(1) Aspergillus
(2) Puccinia
(3) Rhizopus
(4) Mucor
136. Adhesive pad of fungi penetrates
the host with the help of
(1) softening by enzymes
(2) mechanical pressure and enzymes
(3) only by mechanical pressure
(4) hooks and suckers
137. Plant decomposers are
(1) Protista and animalia
(2) Monera and fungi
(3) Animalia and monera
(4) Fungi and plants
138. What is true for plasmid?
(1) Plasmid contains gene for vital
activities
(2) Plasmids are widely used in gene transfer
(3) These are main party of chromosome
(4) These are found in virus
139. Cauliflower mosaic virus contains
(1) ds DNA
(2) ss RNA
(3) ss DNA
(4) ds RNA
140. What is true for archaebacteria?
(1) All fossils
(2) All halophiles
(3) Oldest living beings
(4) All photosynthetic
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