(d) A higher percentage of light and dark
moths were recaptured in the country
compared to light and dark moths
recaptured in the city.
- Read the following four (A-D) statements :
i. Natural selection is a process in which
heritable variations enabling better
survival are enabled to reproduce greater
number of progeny.
ii. When migration of a section of population
to another place and population occurs,
gene frequencies changes
iii. If loss of gene migration happens
multiple times there would be a gene
flow
iv. If loss of considerable gene from a
small population occurs by chance it is
called as genetic drift
How many of the above statements are
true:-
(a) Two (b) One (c) Four (d) Three - An inter breeding population of finches
became separated geographically, forming
two isolated groups. Each group then
became subject to different selective
pressures. One group was then introduced
into the habit of other. Which one of the
following would determine whether they
now formed two distinctive species?
(a) They failed to produce fertile F1 hybrids
(b) They had been separated for more
than 3 million years
(c) Their plumage had become markedly
different
(d) They showed marked differences in the
shape of their beaks. - Darwin’s finches are best example of
adaptive radiation which of the following
best describe this adaptive radiation?
(a) The evolutionary process that allows for
the change that occur within the same
lineage.
(b) The genetic variability that can be found
among individuals of same species.
(c) A sudden diversification of a group of
organism from closely related species.
(d) The evolutionary process by which
different forms, adapted to different
niches, arose from a common ancestors.- According to Darwinism, fitness level of
which category of microbes is highest?
(a) Which do not divide but is capable to
resist any change in medium
(b) Which divide slowly and make few
hundred individuals in an hour, all are
sensitive to surroundings
(c) Which divide and make two types of
colonies i.e., resistant and sensitive
(d) Which divide fast and make millions of
individuals within hours, They have
built in variations in terms of ability to
utilize a feed component - Consider following statements regarding
microsphere
i. They had catalytic activity
ii. They were spherical in shape and 1-2 μm
in diameter.
iii. They provided partial isolation to
contents inside it, from external
environment
iv. They had concentric double layered
boundaries.
Which of the above statements are incorrect?
(a) i and ii (b) iv only
(c) ii only (d) None of these - Which of the following is incorrect?
(a) Lobefin fish evolved into first
amphibians.
(b) Ichthosaurus evolved about 200 mya.
(c) Stegosaurus was 20 feet in height and
had huge fearsome dagger like teeth.
(d) Reptiles of different shapes and size
dominated on earth around 200 mya. - Read the following three statement (A to
C) and mark the right option
i. The thorns in Bougainvillea and tendrils
in cucurbits represent divergent
evolution
ii. The similarity in the eyes of Octopus and
monkeys is the result of convergent
evolution