Biology - Questions (Section-1)
43Monotremes are unique mammals because they
A. posses hairB. give birth to live young
C. secret milk in a pouch D. lay eggs
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44Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?
A. Exact concentration of solution is not givenB. Character of semi permeable membrane is not given
C. The flow of solution is not possible through semi permeable membrane D. All are incorrect
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45Plant bends towards the source of light on account of the movement of curvature known as
A. geotropismB. thigmotropism
C. chemotropism D. phototropism
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46Plant have ____ while animals lack it.
A. starchB. cellulose
C. protein D. fat
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47Poison glands of snakes are homologous to
A. electric organs of fishesB. stings of rays
C. sebaceous glands of mammals D. salivary glands of vertebrates
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48Radical vascular bundles are those in which
A. xylem is surrounded by phloemB. phloem is surrounded by xylem
C. xylem and phloem occur on the same radius D. xylem and phloem occur on the different radii
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