1) What are two jobs of the stem? a) to anchor the plant and transport nutrients b) transport nutrients and hold up the plant c) photosynthesis and anchor the plant 2) What is the process by which plants make their own food? a) photosynthesis b) biosynthesis c) photonsynthesis 3) The push caused by air is called ___. a) matter b) air pressure c) density 4) The tool that is used to measure air pressure is called a____. a) meter stick b) graduated cylinder c) barometer 5) cool air has ____pressure. a) high b) low c) medium 6) A change to the atmosphere that has harmful effects is called? a) toxic waste b) air pollution c) emissions 7) The trapping of heat near Earth's surface is called a) the greenhouse effect b) emissions c) the ozone layer 8) In desert plants, chlorophyll is present in the _____. a) stems b) leaves 9) Dispersal of seeds in coastal plants mainly happens by ______ a) wind b) water 10) In fixed plants the stomata are present only on the upper surface of the leaf. a) True b) False

Grade 4 Science Revision

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