Evolution BIOLOGY - Evolution

Select two pairs from the following which exhibit divergent evolution. Give reasons for your answer.

1. Forelimbs of cheetah and mammals.
2. Flippers of dolphins and penguins.
3. Wings of butterflies and birds.
4. Forelimbs of whales and mammals.

Select the analogous structures from the combinations given below:

1. Forelimbs of whales and bats
2. Eyes of octopus and mammals
3. Tuber of sweet potato and potato
4. Thorns of Bougainvillea and tendrils of Cucurbita

2. ​​​​​​​State the kind of evolution they represent.

1. Select the homologous structures from the combinations given below:

1. Forelimbs of whales and bats.
2. Tuber of potato and sweet potato.
3. Eyes of octopus and mammals.
4. Thorns of Bougainvillea and tendrils of Cucurbita.

2. ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​State the kind of evolution they represent.

List the two main propositions of Oparin and Haldane.

How do Darwin’s finches illustrate adaptive radiation?

Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory.

Practise drawing various animals and plants.

Rearrange Ramapithecus, Australopithecus and Homo habilis in the order of their evolution on the Earth. Comment on their evolutionary characteristics.

How do homologous organs represent divergent evolution? Explain with the help of a suitable example.

Describe one example of adaptive radiation.

Attempt giving a clear definition of the term species.

Why are analogous structures a result of convergent evolution?

State two postulates of Oparin and Haldane with reference to origin of life.

Write the probable differences in eating habits of Homo habilis and Homo erectus.

Identify the examples of convergent evolution from the following:

__________ is a vestigial organ.

In 1953 S.L. Miller created primitive earth conditions in the laboratory and gave experimental evidence for origin of first form of life from preexisting non-living organic molecules. The primitive earth conditions created include:

First mammals appeared in the period:

Animal husbandry and plant breeding programmes are the examples of:

Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.

Using various resources such as your school Library or the internet and discussions with your teacher, trace the evolutionary stages of any one animal say horse.

Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.)

List 10 modern-day animals and using the internet resources link it to a corresponding ancient fossil. Name both.

Describe Miller and Urey’s experiment, along with the product obtained. What is the significance of this experiment?