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The bile contains the pigments
A. haemoglobin and haemoerythrin
B. biliviridin and bilirubin
C. bilirubin and haemocyanin
D. haemoglobin and biliviridin
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Lizards, snakes, crocodiles and turtles belong to the class
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Biologists have so far known, found and identified a large number of species in the plant and animal kingdom. In terms of numbers, the largest found and identified so far is from among the
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Which one of the ecosystems Is the largest in the world?
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Tse-Tse fly is the vector for
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Which among the following is not a degenerative disease?
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Under the immunisation programme's Govt. of India is providing vaccination to prevent some vaccine-preventable diseases. Which of the following is NOT one of them?
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Light compensation zone refers to
A. where light is available in plenty
B. where all light energy is used
C. where light is maximum
D. beyond which light does not penetrate
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The part of the eye behind the lens is filled with
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The medulla oblongata encloses the
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Fishes send out their nitrogenous waste as
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The organ that produces antibodies in our body is
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Who considered evolution as due to mutation?
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Phonoreceptor refers to the perception of
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Maintenance of pregency is under the control of
A. Follicular stimulating hormone
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Which among the following vitamins is considered to be a harmone?
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The pH of normal urine of man ranges from
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What is an antigen?
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The tallest tree in the world Sequoia™ is found in
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The workers in the honey bee colony are
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Chlorosis is the phenomenon where leaves have
D. patches of chlorophyll
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Scurvy is a disease caused by the deficiency of vitamin.
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The layer of stagnant water in which light penetrates is called
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Haemophllia is a genetic disorder which leads to
A. decrease in haemoglobin level
B. rheumatic heart disease
C. increase in haemoglobin level
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The grouping o( blood is based on substances called
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Dinosaur is a/an
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A person with a blood group ____ is considered to be an universal donor.
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Oxygen transportation in human body takes place through
1) Blood
2) Lungs
3) Tissue
The correct sequence of transportation is
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The grouping of blood is based on substances called
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The aphotic zone means that light is