Name the Following

Question 11 Mark

Important stages in the journey of human evolution:

Answer

Question 21 Mark

Vestigial organs in human beings:

Answer

Appendix, tail-bone or coccyx, wisdom teeth and body hair.

Question 31 Mark

Fish that can breathe with help of lungs:

Answer

Lung fish.

Question 41 Mark

Genetic disorder caused due to mutation:

Answer

Sickle cell anaemia.

Question 51 Mark

Three Scientists who proved that except viruses, all living organisms have DNA as genetic material.

Answer

Oswald Avery, Mclyn McCarthy and Colin MacLeod.

Question 61 Mark

Example indicating that mammals are evolved from reptiles and amphibians from fishes.

Answer

Duck billed platypus. Lungfish

Question 71 Mark

He called his concept as principle of 'use or dis- use of organs'.

Answer

Jean-Baptiste Lamarck

Question 81 Mark

First record of human like animal in the form of ape from East Africa.

Answer

Ramapithecus

Science Name the Following