Biology General Studies Questions for ssc upsc competitive examspage 10

136 .When one gene pair hides the effect of the other unit, the phenomenon is referred to as-

A. None of the options

B. Epistasis

C. Dominance

D. Mutation

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137 .Life originate by chemosynthesis was proved in the labouratory by-

A. Pasteur

B. Sager

C. Aristotle

D. Miller

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138 .Homologous organs are -

A. Dissimilar origin and dissimilar structure

B. Dissimilar origin but similar function

C. Dissimilar origin with similar or dissimilar function

D. Dissimilar origin with dissimilar function

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139 .The term ecosystem is first given by-

A. Reiter

B. Aristotal

C. Tansley

D. Haeckel

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140 .Which one of the following is the correct sequence of a food chain?

A. Diatoms- Crustaceans â€“ Herrings

B. Crustaceans â€“ Diatoms-Herrings

C. Diatoms â€“ Herrings â€“ Crustaceans

D. Crustaceans â€“ Herrings â€“ Diatoms

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141 .Vultures which used to be very common in Indian country side some years ago are rarely seen nowadays. This is attributed to-

A. The destruction of their nesting sites by new invasive species

B. A drug used by cattle owners for treating their diseased cattle

C. Scarcity of food available to them

D. A widespread, persistent and fatal disease among them

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142 .Centre for Ecological Science is situated at-

A. new Delhi

B. Allahabad

C. Karnal

D. Bengaluru

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143 .Which one lacks both root and stomata-

A. Hydrophyts

B. Mesophytes

C. Hygrophytes

D. Halophytes

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144 .10% law of energy transfer in food chain was given by -

A. Lindemann

B. Stanley

C. Tansley

D. Weismann

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145 .Energy transfer from organism to organism in a natural community develops-

A. Biological control

B. Food chain

C. Food web

D. Pyramid of energy

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146 .Pyramid of energy in a ecosystem is-

A. Always inverted

B. Always upright

C. Spindle shape

D. Both upright and inverted depending upon ecosystem

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147 .Eco-mark is given to an Indian product which is;

A. Rich in protein

B. Environment friendly

C. Conomically viable

D. Pure and unadulterated

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148 .The world's only floating national park is situated in-

A. Manipur

B. Kulakumpur

C. Bilaspur

D. Dispur

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149 .Which of the following can be found as pollutans in the drinking water in some parts of India- Select the correct answer using the code given below:

A. Arsenic

B. Sorbital

C. Fluride

D. Formaldehyde

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150 .The most important indoor air pollutant is-

A. Sulphur Dioxide

B. Carbon Dioxide

C. Nitrogen Dioxide

D. Radon gas

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