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.

Organisms and Populations

Short Answer Type

41. List the various abiotic environmental factors factors.

142 Views

42. If a marine fish is placed in a fresh water aquarium, will the fish be able to survive ? Why or why not ?

268 Views

43. Define phenotypic adaptation. Give one example.

Phenotypic adaptation involves non-genetic changes in individuals such as physiological modifications, acclimatization or behavioural changes to escape or adapt to the environmental conditions.

Example. Desert plants have sunken stomata to prevent loss of water.

406 Views

44. Most living organisms cannot survive at temperature at about 45°C. How are some microbes able to live in habitats with temperatures exceeding 100°C ?

251 Views