Sample paper 2
Question: 1
An animal with two successive sets of teeth is called
A. Diphyodont
B. Monophyodont
C. Heterodont
D. Polyphodont
E. None of the above
Correct Answer: A. Diphyodont
Explanation:
Diphyodonts have two sets of teeth namely deciduous teeth and permanent teeth. The deciduous
teeth are replaced by permanent teeth. Monophyodonts are the organisms having one set of teeth
which are not replaced at later stages of life. Heterodonts are the organisms which possess different
types of teeth. Polyphodonts are the organisms whose teeth are continuously replaced.
Question: 2
Area where the movement of water is from the surface to the ground water system is called
A. Catchment area
B. Springs
C. Aquifer
D. Artesian well
E. None of these
Correct Answer: A. Catchment area
Explanation:
Catchment area is the area where the net water movement is from the surface to the ground water
system. Springs are the area where ground water reaches the surface and runs off. Aquifer is the
rocky body through which ground water flows. Artesian well is a well drilled into an aquifier that has
sufficient hydrostatic pressure to force water up into it.
Question: 3
The word ‘Savanna’ refers to
A. Temperate grasslands
B. Tropical forests
C. Deserts
D. Artic region
E. Tropical grasslands
Correct Answer: E. Tropical grasslands
Explanation:
Tropical grasslands are called as Savanna. It is located near the equator. It is scattered with shrubs
and isolated trees. Savanna
covers approximately 20% of earth’s land area.