Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I                               Column II
I. Sickle cell anemia             1. Sympatric speciation
II. Polyploidy                       2. Balancing selection
III. Darwin finches               3. Adaptive radiation
IV. Tail in humans                4. Atavism
Codes:
        I    II   III    IV
  • .     1    2    3     4
  • .     2    1    4     3
  • .     2    1    3     4
  • .     1    2    4     3

Given below is the representative evolutionary history of vertebrates through geological periods. A, B, C and D respectively are:
  • Dinosaurs, Thecodonts, Therapsids and Pelycousurs
  • Dinosaurs, Therapsids, Thecodonts and Pelycosaurs
  • Pelycosaurs, Therapsids, Thecodonts and Dinosaurs
  • Theraosids, Dinosaurs, Pelycosaurs and Thecodonts

The following two plants exhibit:
  • Analogous organs
  • Vestigial organs
  • Rudimentary organs
  • Homologous organs

In the apparatus of Urey and Miller experiment the gases [G] contained in the flask are:
  • Methane, Carbon dioxide, Ammonia and Water vapour
  • Methane, Hydrogen cyanide, Ammonia and Water vapour
  • Methane, Ammonia, Hydrogen and Water vapour
  • Carbon dioxide, Oxygen, Hydrogen and Ammonia

At the time early life first formed on Earth, the atmosphere could best be described as:

 

  • oxidizing

  • reducing

  • rich in oxygen

  • low in hydrogen gas

Distantly related organisms with similar traits have experienced:

  • Coevolution

  • Convergent evolution
  • Divergent evolution
  • Parallel evolution

Disruptive selection favors:

  • Both extreme forms of a trait

  • Intermediate forms of a trait
  • One of the extremes of a trait
  • Environmental differences

Which one of the following would cause the Hardy-Weinberg principle to be inaccurate?

  • The size of the population is very large.

  • Individuals mate with one another at random.
  • Natural selection is present.
  • There is no source of new copies of alleles from outside the population.

Which of the following ideas was developed by Thomas Malthus?

  • Peppered moths living near English industrial cities provide a good example of evolution.

  • The diversity of Galápagos finch species is the result of natural selection.
  • Living things often produce far more offspring than are needed to maintain their numbers.
  • Reproductive isolation is pre-condition for speciation

Theory of spontaneous generation of life was conclusively disproved by:

  •   Francesco Redi

  •   Oparin and Haldane

  •   Louis Pasteur

  •   Eldredge and Gould

Which of the following is not a result of convergent evolution?

  •   Potato and sweet potato

  •   Flippers of penguins and dolphins

  •   Eye of octopus and a mammal

  •   Thorn and tendril of Bougainvillea

The similarity of bone structure in the forelimbs of many vertebrates is an example of
  • Homology
  • Analogy
  • Convergent evolution
  • Adaptive radiation
Among the following sets of examples for divergent evolution, select the incorrect option:

  • Forelimbs of man, bat and cheetah

  • Heart of bat, man and cheetah
  • Brain of bat, man and cheetah
  • Eye of octopus, bat and man

According to Hugo de Vries, the mechanism of evolution is:-
  • Multiple step mutations
  • Saltation
  • Phenotypic variations
  • Minor mutations

Genetic drift operates in

The chronological order of human evolution from early to the recent is

Which is the most common mechanism of genetic variation in the population of a sexually reproducing organism?

 

Variation in gene frequencies within populations can occur by chance rather than by natural selection. 
This is referred to as:

Which one of the following options give one correct example each of convergent evolution and divergent evolution? 

Darwin's finches are a good example of

Given that the frequency of children homozygous for the recessive allele for cystic
fibrosis is about 0.0016. What is the frequency of heterozygotes in the population? [Cystic fibrosis is inherited as an autosomal recessive disorder].

Peripatus is a connecting link between

One of the important consequences of geographical isolation is:
Which one of the following pair of items correctly belongs to the category of organs mentioned against it?

The finches of Galapagos islands provide an evidence in favour of:

Variations  caused by mutation, as proposed by Hugo de Vries, are:

A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population?

In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 kg to 5 kg die. Which type of selection process is taking place?

Match the hominids with their correct brain size:

(a)   Homo habilis                       (i)   900 cc

(b)   Homo neanderthalensis        (ii)  1250 cc

(c)   Homo erectus                      (iii)  650-800 cc

(d)   Homo sapiens                      (iv)  1400 cc

Select the correct option.

            (a)       (b)       (c)       (d)

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

 
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Practice Zoology Quiz Questions and Answers