8th class Science Chapter 1 online mcq test with answers for chapter 1

Top Scorers Of Chapter 1 "General Science 8th Class English Medium Chapter 1 Online Test" MCQ`s Test

Sr.#	Question	Answer
1	--------occupy the b ase of pyramid.	A. Producers B. Primary canivores C. Herbivores D. Top carnivores
2	------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.	A. Waisting of energy B. Destroy fo energy C. Transfer of energy D. Produce of energy
3	A relationship where two species live together closely is called	A. Symbiosis B. Predation C. Competitor D. None of these
4	Ozone is a layer of gases in ............. atmosphere of the Earth.	A. Upper B. Lower C. Middle D. Inner
5	Which is the solution of environmental problems.	A. Reducing pollution B. Plantation C. Protection of endangered D. All these
6	The feeding level of an organism in an ecosystem is called.	A. Food Web B. Food chain C. Trophical level D. Secession level
7	A symbiotic relationship in whihc both speciesl get benefit is called.	A. Commensalism B. Hebitate C. Mutualism D. Symbiosis
8	Th graphical epresentation of tropihic relationship oforaganisms in an ecosystem is called.	A. Food Chian B. Ecological pyramid C. Trophic level D. Predation
9	Which factor is responsible for ecological imbalance.	A. Over hunting B. Change in water supply C. Migration D. All these
10	Organism in ecologicla communits interact with one anothe rin....... major ways.	A. Two B. three C. Four D. Five