The attraction of water molecules to each other is called (A) adhesion. (B) magn

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The attraction of water molecules to each other is called (A) adhesion. (B) magnetism. (C) cohesion. (D) turgor 17 The element which is the building block of all living things is (A) oxygen (B) carbon (C) nitrogen (D) phosphorus 18. 19. Carbon is used to form (A) carbohydrates. (B) fats. (C) proteins. (D) all of these. (E) none of these. Plants get the carbon they need in order to produce glucose by (A) taking carbon dioxide directly from the atmosphere. (B) combining carbon monoxide with oxygen to form carbon dioxide. (C) living in association with bacteria that convert carbon dioxide from the atmosphere into a form they are able to use. (D) absorbing water 20,-- 21.Where might a plant store carbohydrates? (A) in seeds (B) in roots (C) in leaves (D) in all of these (E) in none of these 22. Animals gain the carbon they need to build organic molecules (A) by taking carbon dioxide directly from the atmosphere. (B) by living in association with bacteria that convert carbon dioxide from the atmosphere into a form they are able to use. (C) by eating plants and other animals. (D) by drinking water 23. Water moves from the roots of plants to the leaves as a result of 24.- -A plant that does not receive enough water would (A) increase turgor. 25. Look at the illustration to the right of a cell surrounded by a solution.. (A) cellular respiration. (B) capillary action. (C) condensation. D) specific heat. (B) decrease photosynthesis. (C) do both A and B. (D) do none of these. The black dots represent dissolved nutrients. In which direction will osmosis take place? (A) Water will move from the cell into the Cell surrounding solution. (B) Water will move from the surrounding solution into the cell. (C) No osmosis will occur. (D) Osmosis will.. occur only if there is turgor Capillary action in plants depends upon (A) transpiration. (B) cellular respiration. (C) condensation. (D) specific heat. 26. 27.Transpiration depends directly upon (A) condensation. (B) evaporation. over (C) turgor. (D) precipitation. 181

Explanation / Answer

17) C) Cohesion

The attraction of the molecules of the same substance is called as cohesion.

The attraction of the molecules of different substances is called as adhesion.

18) B) Carbon

Carbon is the building block of all living things. It forms tissues and molecules by combining with atoms like oxygen,hydrogen and nitrogen.

19 ) D.all of these.

Carbon is used to form all of carbohydrates, proteins and fats .

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