BY2.2 0.0 / 5 ? BiologyASWJEC Created by: katherineCreated on: 28-05-13 12:39 Is the SA:VOL ratio larger that in an elephant or a mouse? mouse 1 of 30 Why do unicellular organisems respire by diffusion large sa:vol, so diffusion through body surface is sufficient to suppky their needs 2 of 30 What are the specialsed surfaces for gas exchange in aquatic organisms Gills 3 of 30 What are the specialised surfaces for gas exchange in terrestrial enviroments Lungs 4 of 30 4 properties of gas exhagne surfaces to aid diffusion Large SA, thin, moist, permeable 5 of 30 The large moist area for GE is a region of potential ______________ Water loss 6 of 30 Why is counter current flow more efficient Diffusion gradient of adjacnet flows is maintained over the whole surface 7 of 30 internal gills minimose loss of _________ and ___________ Water , heat 8 of 30 Amphibians have a ________ form, which develops in water and undergoes __________ into adult form Larval, Metamorphisis 9 of 30 how do frogs respire when inactive uses moist skin as a respiritory surface 10 of 30 when active? uses lungs 11 of 30 Reptiles and birds have more efficiant lungs than amohibians, true or false? TRUE 12 of 30 The human respiritory system includes.... Epiglottis, thrchea, bronchi, bronchioles, alveoli, pleural membranes, ribs, intercoslte muscls, diaphragm 13 of 30 Name the 2 functions of the respiritory system Ventilation and gas exchange 14 of 30 Ventalation movemens are caused by the Intercostle muscles, diaphragm, pleaural membranes, pleural cavity 15 of 30 What typoe of organism has Branched chitin lined system of thachea Insects 16 of 30 What are the openings if the trachea called Spiricles 17 of 30 What 8 features does the angiosperm leaf include? Cutile, epidermis, palisade mesophyll, spongy mesophyll, vascuar bundle, air space, stomata, guard cells 18 of 30 What do these features do allow the plant to photosynthesise efectivly 19 of 30 Name a laf adaptaion for light harvesting large SA, ability to move by growth the the best positions 20 of 30 Palisade cells are _________ and _______ arranged in a layer elongated, densly 21 of 30 what organelle do palisade cells ocntain a lot of Chlolplast 22 of 30 Light can pass thorugh the ______ spongy mesophyll 23 of 30 What is the function of the spaces between mesophyll cells They allow CO2 to diffuse to the cells and O2 to diffuse away. The cells are moist so gasses can dissolve 24 of 30 What is the function of the cuticle Prevents water loss, reduces gaseous exchange 25 of 30 What is the functin of the presence of pores and stomata Allows water and gasses to enter thorugh 26 of 30 What do the guard cells do to control GE and loss of water open and close 27 of 30 Why do guard cells change shape Turgor 28 of 30 Is the inner or outer wall inelastic INNER 29 of 30 What plants open their stomata at night instead of day, in order to conserve water Xerophytes 30 of 30
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