76.  If water in a lake were to behave like other liquids, then in extremely cold weather it would freeze

77.  Hemophilia is extremely rare in women because:

78.  Blister copper is

79.  Short sightedness can be corrected by

80.  Which of the following statements is/are correct?
1.The earth revolves around the sun in an elliptical orbit.
2.The sun always attracts the earth with the same force.

81.  L-dopa is a drug that is used to treat

82.  The retention of urea in the blood in the marine environment, as a means to osmoregulate, is best seen in

83.  When urine is passed out several-fold more than in a normal subject, the condition is referred to as

84.  Consider the following statements:
1.Escape velocity from the surface of the earth is slightly more at the equator than at the poles.
2.The earth is rotating and its equatorial radius is more than the polar radius. Which of the above statements is/are correct?

85.  The shortest bone in the human body is the

86.  A plant leaf appears to be green because it

87.  The two purest forms of water are
1.Filtered water
2.Heavy water
3.Rain water
4.Distilled water The correct answers are:

88.  The substance used to attract the gypsy moth is

89.  The different isotopes of an element have the same I. Atomic mass II. Atomic number III. Arrangement of orbital electrons The correct statement(s) is/are:

90.  The red algae are able to grow at greater depths in the sea than any other photosynthetic organism. What could be the reason/s?
1.The chlorophyll found in red algae is very efficient in absorbing all forms of light making it possible for them to photosynthesize at such depths
2.Their chloroplast structure is such that it makes them absorb the dimmest light available at such depths
3.The phycobilin pigments that they share with bluegreen algae efficiently absorb the green, blue, and violet light that penetrates great depths Which of the above is/are the correct reason/s?