1) Arteries a) carry blood from the heart under a high pressure b) carry blood to the heart under low pressure c) Have thick walls d) Have thin walls e) A+C f) B+C 2) Which of the following have valves a) Arteries only b) Veins only c) Veins and capillaries d) capillaries only e) Arteries and capillaries 3) In this diagram, the gas entering the alveoli is a) Oxygen b) Carbon dioxide c) Both d) Neither 4) In the heart, the highest pressure is in.... a) In the left atria, because blood is coming from all parts of the body b) In the right ventricle, because blood is being pumped to all parts of the body c) All chambers have the same pressure d) The left ventricle, because blood is being pumped to all parts of the body 5) Choose the best and correct definition for active transport a) The movement of substances from a low to a high concentration against the concentration gradient using energy from respiration to activate a protein carrier b) The movement of substances from a high to a low concentration against the concentration gradient using energy from respiration to activate a protein carrier c) The movement of water particles from a high to low water potential across a partially permeable membrane 6) There is lots of space inside red blood cells because a) They have a biconcave shape b) They have haemoglobin c) They need to carry oxygen d) They have no nucleus 7) This structure prevents excess water loss in leaves a) Palisade mesophyll b) Waxy cuticle c) Stomata d) Guard cells e) Air spaces 8) Miss Demetriou is pointing to the... a) Vascular bundle b) Phloem vessels c) Xylem vessels d) Veins 9) The part of the leaf that allows efficient gas exchange to all cells is the a) Stomata b) Air space c) Spongy cells d) Palisade cells e) A+B f) C+B 10) The root hair cells carries water a) From a low to a high concentration b) From a high to a low concentration c) Against the concentration gradient d) It doesn't carry water 11) The adaptation of the root hair cell that reduces the diffusion distance of water is a) Large permanent vacuole b) Thin cell wall c) large surface area d) No cuticle 12) Translocation is a) The movement of water through the plant and leaves b) The evaporation of water from leaves c) Don't know d) The movement of sugars in plants 13) Phosphates are needed in plants a) To make amino acids for protein synthesis b) In respiration to make DNA and new cell membranes c) In respiration, photosynthesis and to make enzymes d) Needed for photosynthesis 14) Where do plants get the minerals they need for healthy growth? a) From the air only b) From the soil only c) From the air and soil d) From the shops 15) Which plant materials are transported through the xylem? a) Water b) Water and oxygen c) Glucose and oxygen d) Water and minerals 16) How does glucose travel in the phloem a) Up only b) Down only c) Up and down d) Clockwise 17) How does water leave the plant? a) Through pores in the leaves b) Through phloem cells c) Through root hair cells d) By active transport 18) C6H12O6 + 6O2 → 6CO2 + 6H2O is the equation for a) Photosynthesis b) Metabolism c) Anaerobic respiration d) Aerobic respiration

TOPIC B2.2

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