91. The best way of dating fossils recent origin is by ______.
A. radio carbon method
B. uranium lead method
C. potassium argon method
D. a combination of all these
Answer : Option D
92. The age of rock is calculated on the basis of ______.
A. types of fossils present
B. number of strata
C. amount of uranium present
D. none above
Answer : Option C
93. It is not a true fossil.
94. all mammals, whale, dolphin, bat, monkey and horse have some common trait, but they also show conspicuous differences. This is due to the phenomenon of
95. These are some examples of vestigial structures in man
A. wisdom tooth vermiform appendix, hair
B. wisdom tooth, vermiform appendix, coccyx
C. wisdom tooth, head, nails
D. none of these
Answer : Option B
96. Precipitation test gives evidence from ______.
A. comparative embryology
B. comparative anatomy
C. comparative serology
D. none above
Answer : Option C
97. In external appearance the krait and lycodon are indistinguishable. This is an example of
98. Postanal tail can be traced in ______.
99. The Jurassic period belongs to the ............ era.
100. Which of the following cannot determine phylogenetic relationships ?