The animal group which does not exist in Galapagos island is
Insects
Protozoa
Crustacea
Amphibia
Appearence of dark-coloured pepper moths among the light-coloured ones as a result of increased industrial pollution is an example of
Disruptive selection
Stabilizing selection
Directional selection
None of the above
Match the columns
Column I
A.
B.
C.
Hugo de Vries
Julian Huxley
Jean Baptiste
1.
2.
3.
Inheritance of acquired characters
Multiplication of individual species in geographical proportion
Mutation theory of evolution
Codes:
A B C
1 2 3
2 3 1
3 1 2
3 2 1
Hardy-Weinberg's principle of 'zero evolution' is based on
genetic equilibrium
random mating
no migrations
All of the above
What does the term 'reproductive isolation' refers to?
An individual is unable to fertilise itself
Genes are not exchanged between two populations
Individuals from two populations never mate
Individuals form two populations never produce offsprings
Below are listed some pairs of characters. the homologous pair is
forelimbs of dog and camel
insect wing and batwing
feathers of birds and fins of fish
lens of vertebrate and arthropod
Pythons possess tiny leg bones that serve no purpose in locomotion. Such organs are
homologous organs
analogous organs
vestigial organs
Both (a) and (c)
The two critical steps in the evolution of humans were the
evolution of bipedalism and the enlargement of the brain
making and using tools
using fire and making shelters
exhibiting culture and having sophisticated tools
Why does it is said that looking at stars on a clear night sky means looking back in time?
Which of the following statements are not true?
The origin of life is considered a unique event in the history of universe.
Earth is just a speck.
Universe is almost 20 million years old
Galaxies contain stars and clouds of gas and dust
Big Bang theory attempts to explain
The origin of universe
The origin of Earth
The origin of life
The origin of environment
Which of the following is not true about Big Bang theory?
A singular huge explosion
Universe expanded and temperature came down
Hydrogen and Helium formed alongwith this expansion
The gases condensed under gravitation and formed the galaxies of the present day universe.
Which of the following is true regarding early earth?
Earth was supposed to have been formed about 4.5 billion years back.
The atmosphere of early earth was full of water vapour.
The surface of earth was covered by water vapour, methane and carbondioxide, the three compounds, formed from molten mass.
The UV rays from the sun broke up water into hydrogen and oxygen and lighter oxygen escaped.
…….combined with ….. and….. to form water, CO2 and others.
Oxygen, ammonia and Methane
Hydrogen, ammonia and Methane
Hydrogen, Methane and ammonia
Oxygen, Methane and hydrogen
Which of the following theory is dismissed by Louis Pasteur's Experiment?
Theory of panspermia
Theory of spontaneous generation
Theory of special creation
Catastrophic theory
Oparin of…… and Haldane of ….. proposed that the first form of life could have come from pre existing …………
Russia, England, non-living inorganic molecules
England, Russia, living organic matter
Russia, England, non-living organic molecules
England, Russia, life
The formation of diverse organic molecules from inorganic molecules was proposed by
L. Miller
Oparin
Haldane
Both B and C
Which of the following conditions was not there in the Earth at the time of origin of first life form?
High Temperature
Volcanic storms
Reducing atmosphere
Oxygen,Methane and Ammonia in the environment
Which of the following statements is true?
A British scientist created the conditions proposed by Oparin and Haldane in a closed flask with temperature of 800 degree Celsius in electric discharge along with gases methane, hydrogen, ammonia and water vapour and observed formation of amino acid.
Some similar experimental setups were also prepared by other scientists and formation of sugar, nitrogenous bases, Pigments and Fats was recorded.
The processes of chemical evolution were occurring elsewhere in space was concluded by the analysis of content of gaseous cloud.
The first self replicating metabolic capsule of life arose 3 billion years back.
The first non cellular form of life
Could have originated 3 billion years back.
Were small molecules like RNA, proteins and Polysaccharides etc.
Didn't have property to reproduce perhaps
The first form of life were not
Single cells
in water environment only
originated till about 200million years ago
Both A and B
According to theory of special creation which one is wrong?
All living organisms were created as such
Diversity was same since the creation.
Diversity will increase as the changes in the environment come.
The Earth is about 4000 years ago.
The theory of special creation was not objected by which of the following statements?
Existing life forms share similarities to varying degrees not only among themselves but also with life forms that existed millions of years ago.
Many life forms do not exist now.
There has been gradual evolution of life forms
The Earth was about 4000 years ago.
The theory of special creation was strongly challenged during the nineteenth century on the basis of observation made
During a sea voyage in a sail ship called H.M.S. Beagle round the Europe
During a sea voyage in a sail ship called M.H.S. Beagle round the Africa
During a sea voyage in a sail ship called H.M.S. Beagle round the world
During a sea voyage in a sail ship called M.H.S. Beagle round the world
The naturalist who had the similar observations as that of Darwin was…
Alfred Wallace
L.Miller
Which of the following conclusions is of palentological evidences for evolution?
A study of fossils in different sedimentary layers indicates the geological period in which they existed
The new life forms have arisen at same time in the history of Earth
Fossils are remains of hard parts of rocks showing the presence bof carbon in life forms
The embryological support for evolution was disproved by whose keen observations?
Karl Ernst Von Baer
Ernst Heckel
Charles Darwin
Mammals share similarities in the pattern of bones of forelimbs, represent which class of evolution?
Divergent
Convergent
Adaptive radiation
Natural selection
Thorns and tendrils of Bougainvillea and cucurbita, this example does not hold similarity with which of the following examples?
Vetebrate hearts
Wings of butterfly and birds
Vertebrate brains
Arrange the following in the order of their existence during the history of life forms: a)Stegosaurus, b)Brachiosaurus, c)Triceratops, d)Tyrannosaurus, e)Pteranodon, f)Crocodilian, g)Archaeopteryx.
b)-a)-g)-f)-e)-d)-c)
e)-b)-g)-a)-f)-c)-d)
g)-a)-f)-b)-e)-d)-c)
c)-a)-f)-g)-d)-e)-b)
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