NECO BIOLOGY THEORY 1a. Define d term osmosis. 1aii state two - TopicsExpress

NECO BIOLOGY THEORY 1a. Define d term osmosis. 1aii state two conditions necessary for osmosis to occur 1bi. Mention four abiotic factors in a n ecosystem 1ci. State four effects of flooding 1cii. State two effects of air pollution. 1ciii. List ywo functions of guard cells to plant. 3ai. Define an organ 3aii. List four levels of organisation of life 3bi. List five method of soil conservation 1a) Osmosis is the Passage of a solvent (such as water) from a lower- concentration solution to a higher-concentration solution, through a semi-permeable membrane (that allows the solvent to pass but not what is dissolved in it) separating the two solutions. 1b 1.sunlight 2.sand 3.water 4.air 5.temperature 3ai) organ is the collection of similar organ that comes together to perform a tissue 3aii) Life , tissue , organ , cell 3bii) i. They are specific in action ii. they are proteinous in nature , iii. they are affected by temperature, iv. action on enzymes are reversible

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