E-PolyLearning

1211. The combination of a community and its physical and chemical factor is
a. Ecosystem
b. Community
c. Habitat
d. Population
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Answer: (b).Community

1212. In marram grass, leaves have sunken stomata lies in grooves in
a. Lower surface
b. Upper surface
c. both a and b
d. Inner surface
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Answer: (b).Upper surface

1213. Hypodermis a layer of thick walled cells lies beneath the
a. Dermis
b. Epidermis
c. Ectodermis
d. Endodermis
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Answer: (b).Epidermis

1214. At night, when photosynthesis stop, respiration make the water more
a. Alkaline
b. Acidic
c. Neutral
d. Dilute
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Answer: (b).Acidic

1215. The population of living organisms can be expressed in terms of
a. Density
b. Velocity
c. Frequency
d. Speed
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Answer: (a).Density