Biology Class 10th MCQs | 10th Class Biology Solved MCQs Online Test

10th Class Biology English Medium Online Test For Full Book

Sr. #	Questions	Answers Choice
1	The nitrate forming bacteria are.	Rhizobium Nitrosomonas Nitrobacter Cocci
2	Conversion of urea and uric acid into Ammonia is called.	Assimilation Nitrogen fixation Ammonification Biological fixation
3	One of these cycles is also nutrients cycles.	Biogeochemical cycles Carbon cycles Water cycles Nitrogen cycles
4	Naturally found in graphite and diamond.	Nitrogen Oxygen Hydrogen Carbon
5	conversion of the nitrogen gas into nitrates is called.	Denitrification Nitrogen fixation Assimilation Ammonification
6	Which Charles Eiton developed the concept of ecological pyramids?	1926 1927 1928 1929
7	The basic tropic level of all food chain is.	Producers Consumers Decomposers Reducers
8	Which are put in first trophic level?	Carnivores Producers Herbivores Consumers
9	At the end of a long food chian the energy will be.	Will more As same as at start Will less Zero
10	The only source of energy for all ecosystems of the world is.	Sun Moon Plants Ocean
11	Primary source of energy for all ecosystem is.	Electricity Sun Fire Nutrients
12	The total amount of living matter in an ecosystem at any time is called.	Biomass Energy Food Chain Food web