Origin of Species

Q.

What are the four conditions of natural selection?

Q. All the variation in a species do not have equal chances of Survival why?

Q.

What is the importance of variation?

Q.

Name the famous book written by Charles Robert Darwin.

Q.

Describe briefly the theory of Natural Selection given by Darwin.

Q.

Darwin's theory of natural selection.

Q.

Where did life originate on the earth?

Q. The theory which describes origin of life from a non living matter is known as-

1. Theory of abiogenesis
2. Theory of biogenesis
3. Theory of Chemical evolution
4. Theory of Natural selection

Q.

Who proposed the “Theory of Organic Evolution”?

1. Louis Pasteur
2. Carl Linnaeus
3. Charles Darwin
4. Gregor Mendel

Q.

Briefly discuss the Theory of Natural Selection as given by Darwin.

Q.

The book "Origin of Species by Natural Selection" was written by -

1. Oparin

2. Wallace

3. Darwin

4. Darwin and Wallace

Q.

Who coined the term 'survival of the fittest'?

1. Darwin

2. Aristotle

3. Spencer

4. Lamarck

Q.

The last accepted theory of evolution is synthetic theory of evolution.

1. True

2. False

Q.

Write the names of at least three inorganic molecules which helped in the origin of life on the earth.

Q.

Who believed that an organ in disuse will become vestigial?

1. Lamarck

2. Mendel

3. Darwin

4. De Vries

Q. Select the incorrect w.r.t Millers and Urey's Experiment:

1. $N{H}_3,C{o}_2,H_2\text{gases were used}$
2. Experiment run for 18 days
3. Ratio of gases used was 2:1:2
4. Alanine, Glycine, Aspartic acid were produced

Q.

Who proposed the “Theory of Organic Evolution”?

1. Louis Pasteur
2. Carl Linnaeus
3. Charles Darwin
4. Gregor Mendel

Q. Birds have different kinds of beaks depending on:

1. how they fly
2. how big they are
3. where they live
4. the kind of food they eat

Q. Why is the variation beneficial to the species but no necessarily for the individual ?

Q.

Theory of Natural selection was given by

1. Hugo de Vries

2. Weismann

3. Lamarck

4. Darwin

Q.

Scientists believe that all life originated in :
(a) the sea
(b) the soil
(c) the ground
(d) the air

Q. Darwin formulated theory of natural selection in the year

1. 1858
2. 1859
3. 1860
4. 1861

Q. The term chemical evolution is coined by-

1. Oparin and Haldane
2. Darwin
3. Lamarck
4. Urey and Miller

Q. Theory of biogenesis is well described in -

1. Pasteur’s experiment
2. Haldane’s experiment
3. Lamark’s experiment
4. Mendel’s experiment

Q. Name the scientist who gave the theory of the origin of life on earth. What is this theory? [3 Marks]

Q.

What does natural selection states?

1. Those who are the fittest will survive.

2. Those selected by nature become different from others and emerge as new species.

3. Animal give birth to lots of offsprings but all of them don't survive.

4. All of the above

Q.

Who gave the theory of Natural selection? Discuss briefly its main points.

Q. Charles Darwin is credited with

1. The theory of natural selection
2. Charles laws
3. Galapagos island theory
4. Theory of finches

Q. The evolution of vegetable broccoli belonging to the cabbage family is an example of ______ .

1. natural selection
2. artificial selection
3. elimination
4. speciation

Q. The principle of organic evolution envisages

1. No change in complexity
2. Decreasing complexity
3. Increasing complexity
4. Drastic changes