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level: Transport--Plants

Questions and Answers List

level questions: Transport--Plants

QuestionAnswer
what is each organ in a multicellular plant made up of?specialised cells
why do plants need transport systems?to transport water, minerals and glucose around the plant
what is the cuticle of a plantwaterproof layer that reduces water loss from the leaf
what is the upper epidermis cells of a plant?protects leaf and allows light to pass through to the layer below
what is the function of palisade mesophyll cells?absorbs light for photsynthesis
what is the function of spongy mesophyll cells?absorbs light for photosynthesis
what is the function of the xylem (vein)transports water from soil to leaf for photosynthesis
what is the function of the phloem (vein)transports sugar from photosynthesising cells to the rest of the plant
what is the function of air spaces in a plant?allows the diffusion of gases within the leaf
what is the function of stoma in a plantallows the carbon dioxide to enter the leaf and oxygen to exit the leaf
what is the function of guard cells in a plant?controls gas exchange between the leaf and the air outside the leaf
what is number one in this diagramcuticle
what is number two in this diagramupper epidermis
what is number 3 in this diagrampalisade mesophyll
what is number 4 in this diagramspongy mesophyll
what is number 5 in this diagramlower epidermis
what is number 6 in this diagramstoma
what is number 7 in this diagramguard cell
what is number 8 in this diagramxylem
what is number 9?phloem
what is number 10vascular bundle
what are plant organsroots stems leaves
what part of the plant is involved in water transportxylem vessel
describe water transport through the xylem vessel from the root of a plantwater and minerals enter the plant through the root hairs and are transported in the dead xylem vessels
why are xylem vessels lignified?xylem vessels are lignified to withstand pressure changes as water moves through the plant
what is transpirationthe process of moving water through the plant and its evaporation through the stomata
what is the rate of transpiration affected by?wind speed, humidity, temperature and surface area
how is sugar transported in a plantsugar is transported up and down the plant in living phloem
what features do phloem cells have?sieve plates and associated companion cells
what apparatus is used to measure transpiration ratespotometer
why is it necessary to have a layer of oil on the surface of the water in a potometerto prevent evaporation of water from the surface of water in the beaker
how are root hair cells specialisedthey have a large surface area to abosrb water from the surrounding soil.
how does water enter the root hair cells of a plantthere is a water concentration graident between the soil and the xylem vessel inside the root. water enters the root hair cells through the process called osmosis and travels from cell to cell.
how is water moved from the plant to the leafmesophyll cells in the plant leaf have a lower water concentration than the xylem water moves by osmosis from a high water concentration in the xylem to a lower water concentration in the mesophyll cells. this water is available for photosynthesis.
what happens to msot of the water in plant leavesmost water evaporates from leaves into the air spaces where water vapour then diffuses out through the stomata to the surrounding atmosphere
what controls rate of transpirationstomata
when do stomata open and closeopen in the light and close in the dark
why would it benefit the plant if the stomata closed at night when the plant was not photosynthesising?to avoid loss of water vapour from the plant