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Bio. U6 Yr. 1

QuestionAnswer
PollinationIsTheTransferOf_FromAn_,WhereItIsProduced,ToA_AtTheTopOfAPistil/Carpel.APollen_MayFormSoThatThePollenGrainCanTravelDownThe_AndIntoThe_,WhereItMayThenFertilizeAn_._IsTheProcessOf the two nuclei from the gametes fusing to form a new plant embryo. pollen; anther; stigma; tube; style; ovary; ovule; Fertilization
How is a plant leaf specially adapted for gas exchange? Permeable - materials can pass through, thin - gases have a short distance to diffuse, moist - water dissolves materials and facilitates transport, and large surface area - greater surface for transport of nutrients/waste
Which process is matched with a valid example? Fertilization -- a nucleus from the pollen grain fuses with a nucleus in the ovule
What correctly describes water uptake in the root? Water enters the root hair cells by osmosis, water follows the absorption of mineral ions into the root, mineral ions enter the root by active transport, and root hairs extending from epidermal cells increase surface area for water absorption
What factors are necessary for seed germination (growth)? Water, suitable temperature, and oxygen, but NOT sunlight, soil, or carbon dioxide
Fruit ripening in flowering plants is regulated by the hormone _. The release of this substance _ the ripening process is nearby fruit. This _. This type of mechanism is a _. ethylene; increase; stimulates further hormone to be released; positive feedback loop
Fertilizer applied to soil dissolves in water and the mineral ions are absorbed into the root. These are needed all over the plant. How do the water and minerals reach the leaves? Transpiration pull in xylem
What is the function of the guard cells? To control the opening and closing of stomata for regulation of water loss
CobaltChloridePaperBlueWDryButPinkWWater.BlueCobaltChloridePaperWasFastenedToTheUpperAndLowerSurfacesOfAPlantLeaf.After20Minutes,ManySmallPinkDotsWereObservedOnThePaperOnTheLowerSurface,AndAFewPinkDotsWereSeenOnTheUpperSurface.WhatConclusionsCanBeDrawn? There are more stomata on the lower surface than on the upper surface and more transpiration occurs through the lower surface than through the upper surface, but NOT stomata on the upper surface are blocked by the waxy cuticle.
What represents the correct sequence in a plant embryo obtaining nutrients? Gibberellin released from cotyledons --> gibberellin stimulates amylase --> amylase breaks down starch --> sugars used by growing tissues
What can limit water loss in a plant? Limiting#OfStomata,Closing stomata, decreasing temperature of surrounding air, and reducing surface area of leaf, but NOT opening stomata, increasing wind speed in surrounding air, increasing surface area of leaf, or decreasing humidity in surrounding air
Where does growth occur in the plant? Meristem tissue
Which of the following describes the symplastic pathway of water movement through the root to the central xylem? WaterTravelsDownWaterPotentialGradient,WaterMovementLimitedToSymplastPathwayByCasparianStripInEndodermis,WaterTravelsThroughTheCytoplasmOfCellsByPassiveTransport,&WaterTravelsThroughTheCellsByOsmosisDueToTheConcentrationGradientOfMineralIonsBeingPumpedIn
Which part of the plant emerges from the seed first? Root
____ tissue is specially adapted to transport sucrose, while ____ tissue is specially designed to transport water. They are both part of the ____, or "vein" of the plant. Phloem; xylem; vascular bundle
How do auxins cause plant shoots to grow towards light? Increase cell elongation on the side of the stem away from the light source
Created by: user-1907392
 

 



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