Overview of Human Evolution

Q.

He writes a letter Change into passive Voice.

Q.

The first living organisms on earth were___ .

1. Chemotrophs

2. Heterotrophs

3. Autotrophs

4. Eukaryotes

Q. Explain the various methods in use for dating fossils.

Q.

Seymour is a connecting link between

1. Aves and Mammals

2. Amphibians and reptiles

3. Pisces and Amphibians

4. Reptiles and Aves

Q.

What are some differences between a monkeys and a human skeleton?

Q.

Choose the correct option for the following statements

1. Platypus is an egg-laying mammal
2. Spiny anteaters is not a mammal

1. Both Statement 1 and 2 are false

2. Statement 1 is true and Statement 2 is False

3. Statement 1 is false and 2 is true

4. Both Statement 1 and 2 are true

Q.

In marine-mammals like whales and dolphins, the limbs are modified into __which are used as oars to swim in water.

Q.

Fossils found closer to the surface are more recent than the fossils found in deeper layers.

1. False

2. True

Q.

_____are the only mammals that are capable of flight.

1. None of these

2. Bats

3. Whales

4. Dolphins

Q. What are the features of caucasoids?

1. Light skin
2. Blue eye
3. Thick lips
4. All of the above

Q.

Question 44
Name two egg laying mammals.

Q. Define variations in relation to a species?

Q. Write notes on the origin and evolution of man.

Q.

What animals did human evolve from?

Q. Human evolution has a record of changes for the past 15 million years.
a) Name the different species of mankind in chronological order from primitive to modern man.
b) When were the primitive caves developed?
c) Narrate the life led by early man like hominids.

Q. Fern prothallus is:

1. Heterotrophic
2. Heteromorphic
3. Homothallic
4. Heterothallic

Q.

Fossils found closer to the earth core are more recent than the fossils found near the earth's crust.

1. True

2. False

Q. Which of the following statements is not true with respect to variation?

1. All variations in a species have equal chance of survival
2. Change in genetic composition results in variation
3. Selection of variants by environmental factors forms the basis of evolutionary processes
4. Variation is minimum in asexual reproduction

Q.

Write a note on evolution of humans.

Q. Question 2
Why is variation beneficial to the species but not necessarily for the individual?

Q.

Australopithecus afarenesis emerged in ___ epoch.

1. Miocene

2. Pleistocene

3. Holocene

4. None of the above

Q.

Can you give an example of eugenics ?

Q. Assertion :Neanderthal man is the intermediate between Ramapithecus and Homo erectus. Reason: Neanderthal man, with brain size of $800c.c.$, used hides to protect their body.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q.

Where did the modern man today first appear around 11000 years ago?

1. South Africa

2. France

3. Mediterranean sea

4. Java

Q.

Marine mammals possess huge subcutaneous fat deposits to conserve__.

Q.

The differences in the characters or traits among the individuals of a species are called ___.

Q. Which stage in human evolution lies between propliopithecus and Ramapithecus?

Q. The brain capacities of which man were between 650-800cc in course of human evolution?

Q. Why are variations speeded up in sexual mode of reproduction? What are the adantages of this mode of reproduction?

Q. How does the creation of variations in the species promote survival?