Morphological and Anatomical Evidences

Q.

What are the five factors that act to change allele frequencies?

Q.

The idea of mutations was brought forth by

1. Hugo de Vries, who worked on evening primrose.

2. Hardy Weinberg, who worked on allele frequencies in a population.

3. Charles Darwin, who observed a wide variety of organisms during a sea voyage.

4. Gregor Mendel, who worked on Pisum sativum.

Q.

The wings of a bird and the wings of an insect are?

1. Phylogenetic structures and represent divergent evolution

2. Homologous structures and represent divergent evolution

3. Analogous structures and represent convergent evolution

4. Homologous structures and represent convergent evolution

Q.

Who were the first mammals?

Q.

The theory of Panspermia is also called ______.

1. Theory of biogenesis

2. Naturalistic Theory

3. Cosmozoic Theory

4. Theory of catatrophism

Q. What do homologous organs indicate?

1. Evolution does not exist
2. Different structure that perform the same function
3. Similar structure that perform different functions
4. Do not indicate common ancestory

Q.

How is natural selection a major mechanism of evolution?

Q.

What is the degree by which progeny differs from its parents?

Q.

When does directional selection occur?

Q.

In the developmental history of mammalian heart, it is observed that it passes through a two-chambered fish like heart, three-chambered frog-like heart and finally four-chambered stage. To which hypothesis can this above cited statement be approximated?

1. Lamarck’s principle

2. Mendelian principles

3. Biogenetic law

4. Hardy Wienberg law

Q.

What came before Dinosaurs?

Q. A baby has been born with a small tail. It is the case exhibiting

1. retrogressive evolution
2. mutation
3. atavism
4. metamorphosis

Q.

Wild cabbage was converted to cauliflower, broccoli by man. What is this process known as? Explain the process. [3 MARKS]

Q.

Define paleontology. Explain the importance of fossils in deciding evolutionary relationships?

Q.

Name one characteristic feature of aves.

Q. What is fossilisation and speciation.

Q. The image represents limbs of vertebrates. Which among the following statements are correct with respect to this image?

1. They perform same functions
2. They are homologous
3. They are structurally similar
4. They are analogous

Q.

Similar development in distantly-related groups of individuals as an adaptation for the same function is called

1. convergent evolution

2. divergent evolution

3. parallel evolution

4. adaptive evolution

Q.

The fossils of Peking man were discovered by ____________.

Q. The image given represents a section of soil and the preserved remains of organism found in different layers of the soil. Identify the most probable layer containing an older fossil.

1. Layer C
2. Layer A
3. Layer D
4. Layer B

Q. Which of the following are not pairs of analogous organs?
I. Wings of bats - wings of birds
II. Flippers of penguin - Flippers of dolphins
III. Forelimbs of horse - Wings of bat
IV. Forelimbs of horse - Flippers of dolphins

1. II, III & IV
2. III & IV
3. Only IV
4. I & II

Q.

Who found the first dinosaur bones?

Q.

Is genetic drift natural selection?

Q. Assertion(A): Tail is present in the embryos of fishes and humans.
Reason(R): They evolved from a common ancestor.

1. Both A and R are true and R is correct explanation for A
2. Both A and R are true, but R is not the correct explanation for A
3. A is true but R is false
4. Both A and R are false

Q. Which one of the following phenomena supports Darwin’s concept of natural selection in evolution?

1. Development of transgenic animals
2. Production of ‘Dolly’, the sheep by cloning
3. Prevalence of pesticide-resistant insects
4. Development of organs from stem cells for organ transplantation

Q.

Choose the odd one out from each of the following sets:
$\left(I\right)\text{p}\to \text{Hadean, q}\to \text{Phanerozoic, r}\to \text{Palaeozoic, s}\to \text{Proterozoic}$
$\left(II\right)\text{p}\to \text{Ordovician, q}\to \text{Permian, r}\to \text{Silurian, s}\to \text{Cretaceous}$
$\left(III\right)\text{p}\to \text{Oligocene, q}\to \text{Miocene, r}\to \text{Pliocene, s}\to \text{Permian}$
$\left(IV\right)\text{p}\to \text{Cenozoic, q}\to \text{Palaeozoic, r}\to \text{Jurassic, s}\to \text{Mesozoic}$

1. (I)-r, (II)-p , (III)- q, (IV)- s
2. (I)-r, (II)-s, (III)-s, (IV)-r
3. (I)-p, (II)-q, (III)-r, (IV)-s
4. (I)-s, (II)-r, (III)-p, (IV)-q

Q.

List any two factors that could lead to speciation.

Q.

Can we make dinosaurs?

Q.

Explain the statement-" dissimilar looking structures evolve from a common ancestral design".

Q.

Evolutionary convergence is development of

1. Common set of characters in a group of different ancestry

2. Dissimilar characters in closely related groups

3. Common set of characters in closely related groups

4. Random mating