1799106
Descripción
Test por 22alexpereyra, actualizado hace más de 1 año
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Creado por 22alexpereyra
hace casi 10 años
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Pregunta 1
Pregunta
All of the following statements about electromagnetic radiation are true except
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visible light represents a large portion of the electromagnetic spectrum
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photons of visible light contain more energy than photons of microwave radiation
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a wavelength is the distance between two successive crests of a wave
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the wavelength of visible light is usually measured in nanometers
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a prism can be used to separate light into colors
Pregunta 2
Pregunta
The color of a green leaf is due to
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beta carotene
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retinal
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phycobilins
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its ability to absorb green light
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its ability to reflect green light
Pregunta 3
Pregunta
A byproduct of photosynthesis is
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carbon dioxide
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water
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oxygen
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glucose
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chlorophyll
Pregunta 4
Pregunta
All of the following are true of light dependent reactions of photosynthesis except
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NADPH is produced
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photolysis occurs
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ATP is produced
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glucose is produced
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it requires light
Pregunta 5
Pregunta
The oxygen used to build sugars during photosynthesis
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comes from glucose
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is fixed during the light dependent reactions
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comes from CO2
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comes from H2O
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comes from atmospheric oxygen
Pregunta 6
Pregunta
Photosystem I
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is the first photosystem in the series
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has a reaction center with 2 beta carotene molecules poised to release high energy electrons
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absorbs energy with a frequency of 680 nm
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gets its replacement electrons directly from photolysis
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is the only photosystem used in the cyclic pathway
Pregunta 7
Pregunta
Which of the following is not part of the light dependent reactions
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stroma
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the thylakoid membrane
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P680
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photolysis
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ATP formation
Pregunta 8
Pregunta
Which of the following is not associated with a change in H+ concentration across the thylakoid membrane
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ETC
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photolysis
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NADPH formation
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rubsico
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ATP synthase
Pregunta 9
Pregunta
Which of the following is not true of light independent reactions
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produces carbs
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carbon is fixed during this reaction
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can occur at night
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requires ATP
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produces NADP
Pregunta 10
Pregunta
Light dependent reactions occur
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in the cytoplasm
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in the stroma
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in the Calvin Benson cycle
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in the plasma membrane
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in the thylakoid membrane
Pregunta 11
Pregunta
Which of the following is an adaptation that some plants have made to continue photosynthesis at high rates, even under arid conditions?
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conduct the light independent reactions during the day and the light independent reactions at night
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photorespiration
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fix CO2 during the day and then use it at nighttime
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fix CO2 in 1 type of cell and then transfer it to another type of cell where it will be fixed a second time
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use rubisco to fix carbon during the night
Pregunta 12
Pregunta
The common distribution patterns of vascular tissue in eudicot stems are characterized by vascular bundles being
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organized in lines throughout ground tissue
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organized in rings within the ground tissue
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scattered without a definite pattern throughout the ground
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scattered but with the phloem inside the xylem
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organized with alternating rings of xylem and phloem
Pregunta 13
Pregunta
The difference between apical meristem and lateral meristem is that
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the apical meristem develops into bark and the lateral mersitem into cork
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the apical meristem gives rise to photosynthetic cells where the lateral gives rise to non photosynthetic cells
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the lateral meristem is responsible for primary growth and the apical meristem is responsible for secondary growth
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the lateral meristem is responsible for lengthening whereas the apical meristem is responsible for thickening
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the apical meristem is responsible for lengthening whereas the lateral meristem is responsible for thickening
Pregunta 14
Pregunta
Phloem is the transport of ________ as xylem is to the transport of ________.
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minerals; charged ions
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water; sugar
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gases; dissolved solute
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sugar; water
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negatively charges particles, positively charged particles
Pregunta 15
Pregunta
Photosynthetic cells in the mesophyll are
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parenchyma
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sclerenchyma
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collenchyma
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vascular
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dermal
Pregunta 16
Pregunta
Increased surface are for the absorption of water at the root level in vascular plants occur primarily because of
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tubers
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root hairs and nodules
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rhizome
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strobilus
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stolon and tubers
Pregunta 17
Pregunta
During transpiration, water molecules stick together in order to move through the xylem because of
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positive pressure
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negative pressure
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cohesion
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adhesion
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water potential
Pregunta 18
Pregunta
Sugar is transported from leaves to roots primarily because of
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the pumping source of xylem vessels
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transpiration of water molecules
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cohesion-tension mechanism
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a pressure gradient between the source and the sink
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a water potential gradient
Pregunta 19
Pregunta
Guard cells swell and open the stomata when
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solutes, like potassium ions, are pumped out of cells
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soil water becomes scarce
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it is the night for most C3 plants and C4 plants
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there are chemical pollutants in the air
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water along with ions like potassium and calcium move into the cells
Pregunta 20
Pregunta
In a flowering plant, fertilization occurs in the
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stigma
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style
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ovary
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anther
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filament
Pregunta 21
Pregunta
During the plant life cycle, meiosis produces
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4 haploid microspores and megaspores
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endosperm
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apical meristem
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embryo sporophyte
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integuments
Pregunta 22
Pregunta
When the sperm cell from the pollen tubes fuses with the egg and another sperm cell fuses with the endosperm mother cell, it is known as
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pollinization
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double fertilization
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coevolution
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germination
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penetration
Pregunta 23
Pregunta
Which of the following methods of reproduction does not end with the offspring having identical genes to the parent plant
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vegetative reproduction
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cuttings
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grafting
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tissue culture propagation
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sexual reproduction
Pregunta 24
Pregunta
Which of the following hormones is not correctly matched with its function
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giberellins stimulate cell division in the stem tip and young leaves
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auxins stimulate cell elongation in growing tissues and inhibit growth at the axillary bud
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abscisic acid opens stomata by pushing solutes into cells
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cytokinins inhibit aging in the leaves
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ethylene stimulates ripening in fruit
Pregunta 25
Pregunta
In order to reset a biological clock, phytochrome is stimulates to switch from an inactive to active form by
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blue light
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green light
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purple light
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red light
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far-red light
Pregunta 26
Pregunta
If a plant only blooms if it gets more than 12 hours of sunlight it is considered to be a
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long day plant
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short day plant
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long night plant
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biennial
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perennial
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