Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Evolution

Short Answer Type

41. Give a brief account on Darwin's Finches

214 Views

42.

While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.

189 Views

Long Answer Type

43. State and explain any three factors affecting allele frequency in populations.

153 Views

Short Answer Type

44.

Find out through internet and popular science articles whether animals other than man has self-consciousness.

262 Views

45. What is convergent evolution ?

211 Views

46. What are homologous organs ? Give examples.

534 Views

47. What are analogous organs ? Give one example from plants and another from animals.

Analogous organs. The organs which are similar in appearance and perform the same function but differ in their fundamental structure and origin are called analogous organs. They are a result of convergent evolution.

Examples. 1. Wings of birds and insects.

2. Leaves of a plant and cladodes of Ruscus are also analogous organs.

746 Views

48. What are vestigial organs ? Give examples.

481 Views

49. Write significance of vestigial organs.

528 Views

50. Describe one example of adaptive radiation

511 Views