Class notes Gmar7091

 Living things are things which have got life. Or  Living things are things which carry out life processes e.g. respiration, excretion and respiration.  Living things are also called animates.  Non-living things are also called inanimate Characteristics of living things 1. They reproduce 2. hey grow 3. They respire 4. They excrete 5. They move (locomote) 6. They have cells 7. They respond to stimuli (They are sensitive) 8. They feed A cell is a smallest functional unit of a living organism. NB: Living things reproduce in order to multiply or increase in number. - Respiration is the process by which food is broken down in the body cells to release energy. - Respiration enables living organisms to get energy and also excrete carbondioxide and water vapour. - Excretion is the process by which the waste products of metabolism are removed from the body. - Excretion enables living things to get rid of waste products before they become toxic to the body. For more lesson notes, visit ANIMAL CELL A PLANT CELL Respiration is the body cell occurs in an area called Mitochondria. Differences between the plants and animals. Plants Animals 1 2 3 4 5 6 They have chlorophyll They make their own food (They feed autotrophically) They have slow response to stimuli Growth only occurs on the tips of the roots and shoots They lack sense organs Their cells have cell walls Their cells have chloroplasts They lack chlorophyll They can’t make their own food. (They feed holozoically) They have quick response to stimuli Growth occurs in all parts of the animals’ body They have sense organs Their cells don’t have cell walls Their cells don’t have chloroplasts