291.The respiratory problem
most common in smokers is
A. tuberculosis
B. emphysema
C. asthma
D. cancer
292.Water potential of pure
water is
A. zero
B. one
C. negative
D. two
293.Bean shaped cells in
plants are
A. mesophyll cells
B. xylem cells
C. phloem cells
D. guard cells
294.The normal pH of human
blood is
A. 6.4
B. 7.0
C. 7.4
D. 7.5
295.Shrinkage of protoplast
due to exosmosis of water is
A. imbibition
B. plasmolysis
C. deplasmolysis
D. adhesion
296.Artherosclerosis is a
major condition leading to
A. heart attack
B. hypertension
C. stroke
D. tumor
297.Villi and microvilli
increase
A. digestion
B. assimilation
C. absorption
D. ingestion
298.Splitting of glucose
relates to
A. respiration
B. photorespiration
C. glycolysis
D. pyruvic acid
299.Reptiles hibernate during
A. summer
B. winter
C. spring
D. autumn
300.Which of the following
plants are called arthrophytes
A. sphenopsids
B. lycopsids
C. psilopsids
D. pteropsids
ANSWERS:
291.B
292.A
293.D
294.C
295.B
296.A
297.C
298.C
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