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Chemistry LibreTexts

5.05 Week 5 Quiz

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  • cc_profilecc.exam.v0p1qmd_assessmenttypeExaminationqmd_scoretypePercentagecc_maxattempts1
    cc_profilecc.multiple_choice.v0p1In the alternation of generations, spores divide by mitosis and grow intosporophytes.gametophytes.zygotes.gametes.2100cc_profilecc.multiple_choice.v0p1In which group of plants is the gametophyte phase dominant?nonvascular plantsseedless vascular plantsconifersflowering plants5100cc_profilecc.multiple_choice.v0p1The outer layer of a flower is made up of modified leaves that protect the flower. These leaves are calledpetals.sepals.stamens.carpels.10100cc_profilecc.multiple_choice.v0p1The part of a flower in which female gametophytes are produced is thepetal.stamen.stigma.ovary.16100cc_profilecc.multiple_choice.v0p1Flowers pollinated primarily by the wind tend to produce largequantities of nectar.showy flowers.amounts of pollen.heavy grains.19100cc_profilecc.multiple_choice.v0p1What is the endosperm?a food supply for a developing plant embryoan egg that has been fertilized by a sperma male gametophytea female gametophyte21100cc_profilecc.multiple_choice.v0p1A mature ovary of a flower is calleda fruit.a endosperm.25100cc_profilecc.multiple_choice.v0p1What is the function of fruit in flowering plants?to provide food for seedsto help disperse seedsto keep animals away from seedsto enable plants to grow near water30100cc_profilecc.multiple_choice.v0p1When a plant embryo inside a seed has stopped growing, the seed is said to be in a state ofextinction.fertility.dormancy.germination.35100cc_profilecc.multiple_choice.v0p1Under what conditions will a seed begin to grow?only when the seed is dryafter a certain amount of time has passedunder any conditionswhen environmental conditions are favorable40100cc_profilecc.multiple_choice.v0p1Growth of a new plant from part of a stem, leaf, or root that has fallen off is known assexual reproduction.regeneration.grafting.budding.42100cc_profilecc.multiple_choice.v0p1The production of new individuals from stems, leaves, or roots attached to the parent plant is known asgrafting.genetic diversification.sexual reproduction.vegetative reproduction.48100cc_profilecc.multiple_choice.v0p1Some plants reproduce using horizontal underground stems calledstolons.rhizomes.tubers.bulbs.50100cc_profilecc.multiple_choice.v0p1What do growers do to produce a tree by grafting?They move a branch from one part of a tree to another.They grow a tree from a cut stem or leaf.They join structures from two or more trees together.They grow the tree from a seed.55100cc_profilecc.multiple_choice.v0p1The role of all plant hormones is tosuppress plant growth.regulate plant functions.delay fruit ripening.shorten plant cells.58100cc_profilecc.multiple_choice.v0p1The movement of a plant in response to an environmental stimulus is called ahormone.receptor.tropism.cytokinin.63100cc_profilecc.multiple_choice.v0p1Thigmotropism is a plant's response tolight.hormone.touch.gravity.67100cc_profilecc.essay.v0p1qmd_computerscoredNo<p>Describe the two-stage liefcycle of plants: the gametophyte stage and the sporophyte stage.</p>100cc_profilecc.essay.v0p1qmd_computerscoredNo<p>Discuss some ways in which fruit seeds are dispersed.</p>100