Evolution TS

In the solar system of the milky-way galaxy, the earth was supposed to have been formed about :

Given the following statements about activities in the early earth:
I. Water vapour, methane, carbon dioxide, and ammonia released from molten mass covered the surface.
II. The UV rays from the sun broke up water into Hydrogen and Oxygen and the lighter H2 escaped.
III. Oxygen combined with ammonia and methane to form water, \( \mathrm{CO}_2 \), and others.
IV. As it cooled, the water vapour fell as rain, to fill all the depressions and form oceans.
Select the correct statements :

Which theory, regarding the origin of life, is alternatively also called “panspermia” ?

The theory of spontaneous generation stated that :

For the stability of the organic compounds, Oparin opined that probably:

Fossils are generally found in:

“Organisms that share common descent show underlying embryological patterns on which they build later their adult patterns”. This is :

The wings of birds, the forelegs of a horse, and the
upper limbs of humans are :

Analogous organs arise due to :

Which of the following pairs of organs do not represent analogous organs ?

Which type of selection explains industrial melanism observed in moth, Biston betularia ?

Lichens are very sensitive to pollution. In England, after the onset of the industrial revolution, the lichens were adversely affected and the frequency of the dark colored peppered moths increased because they were:

Hugo de Vries based on his work on evening primrose brought forth the idea of :

Assume that \( 4 \% \) of people in a population are born with sickle cell anemia [Sickle cell anemia is autosomal recessive]. What percentage of individuals will have the selective advantage of the sickle-cell trait ?

In a population in genetic equilibrium, the frequency of the recessive allele is found to be 0.2 . What is the frequency of heterozygotes in this population ?

When a new population is established by a very small number of individuals from a larger population, sometimes becoming a different species, the process is called as :

What is genetic equilibrium ?

Seaweeds existed probably around :

Fishes with stout and strong fins that could move on land and go back to water existed about:

The extinct reptilian lineage that evolved into dinosaurs and later on the birds is:

Dinosaurs became extinct during the geological period :

Around 200 mya, some land reptiles went back to the water to evolve into fish-like reptiles, for example:

The dinosaurs suddenly disappeared about :

Though we cannot be certain, what can be the probable reason/s for the sudden disappearance of dinosaurs from the Earth ?
I. Climatic changes killed them
II. Most of them evolved into birds

A Hominid fossil discovered in Java in 1891, now extinct, having a cranial capacity of about 900 cc was:

The change in the frequency of an existing gene variant in a population due to random sampling of organisms is known as:

The most critical evolutionary process, that leads to changes in allele frequencies and favors or promotes adaptation as a product of evolution, is :

All the following are examples of analogous organs except :

The Hardy-Weinberg principle states that the proportions of different alleles will stay the same in a large population if mating occurs at random. It, however, also requires the absence of which of the following factors ?

Cave paintings seen at Bhimbetka rock shelter is in ________

For testing ‘Oparin’s hypothesis, Stanley Miller used \(
\mathrm{H}_2, \mathrm{NH}_3
\) and two other chemicals which were:

Which of the following statements strongly supports Lamarckism ?

All of the following are placental mammals, except

Which of the following statements is incorrect ?

Which of the following is/are correct w.r.t. Natural selection ?

Hugo de Vries gave the concept of mutation while working on :

Choose incorrect statement wrt Dinosaurs ?

Which of the following pairs do not show convergent evolution ?

Embryological support for evolution was proposed by :

Single step large mutation leading to speciation is called

Which of the following is the correct sequence with respect to the origin and evolution of living organism ?
A– Anaerobic chemoautotrophs
B– Anaerobic chemoheterotrophs
C– Aerobic photoautotrophs
D– Anaerobic photoautotrophs

Choose the correct pair

Adaptive radiation is best shown by :-

Forelimbs of mammals have developed along different directions due to adaptations to different needs; it is called

After originating from common ancestral __________ A stock, the finches (with respect to Galapagos island) radiated to different geographical areas and underwent profound changes in pattern of ___________ B .

Fill in the Blanks :-
a. Darwinian variations are _____ and _____
b. Variations due to mutation are ______ and ______

In which of the following natural selections, both extremes are selected but median trait is removed ?

Which one of the following is incorrect about genetic drift ? 

Which of the following refer to correct examples of organisms which have evolved due to anthropogenic
actions?
(A) Resistant weeds
(B) Drugs resistant mosquitoes
(C) Drugs resistant microbes
(D) Darwin’s finches of Galapagos islands

Which of the following describes the correct sequence of evolution of mammals ?