What is meant by Cambrian ?
(A) The Stone Age
(B) The Bronze Age
(C) The Iron Age
(D) The period after the geological period
(E) The period before the geological period
The word "primordial" in line 42 means
(D) ultra - modern
According to the passage, the characteristic of the Cambrian period is that
(A) multicelled animals disappeared suddenly in this period.
(B) multicelled animals appeared suddenly during this period.
(C) animals that could swim, fly or crawl appeared.
(D) animals lived under water during this period.
(E) only single celled animals existed.
The word 'spawned' in line 68 means
A paleontologist is a person
(A) who does research work on the life of past geological periods as known from fossil remains.
(B) who studies about rocks.
(C) who studies plants and animals.
(D) who studies planets and stars.
(E) who studies insects.
According to the passage, scientists have found
(A) rocks younger than that Erwin discovered.
(B) mineralized remains of bristleworm, round worms, shells, mollusks, sea- cucumber, jelly fish and arthropods in layers of rocks.
(C) remains of dinosaurs.
(D) tools used by early men.
(E) remains of wild plants.
The word "innovation" in line 108 means
According to the recent discoveries of major fossil beds, it has been seen that
(A) life existed after 60 million years.
(B) the period of biological change at
the beginning of the Cambrian period occurred about the same time
all around the world.
(C) Charles Darwinís theory was a mere speculation.
(D) biological change occurred at different times at different places.
(E) only amphibians lived in the geological period.
According to the passage, Yunnanozoon lividum in lines 145-146 is
(A) a place
(B) a thing
(C) a plant
(D) an animal having no backbone
(E) primitive chordate
The best title for the passage might be
(A) The Cambrian Period
(B) The Post-Cambrian Period
(C) When Life Exploded
(D) What Palaeontologists Tell Us
According to the passage, what ruled the earth for billions of years, before life got complicated?
(E) simple creatures like bacteria and algae
It can be inferred from the passage that the recent discovery of fossils was in