Photosynthesis and Plant Structures and Function

Descripción

Test sobre Photosynthesis and Plant Structures and Function, creado por 22alexpereyra el 16/12/2014.
22alexpereyra
Test por 22alexpereyra, actualizado hace más de 1 año
22alexpereyra
Creado por 22alexpereyra hace más de 9 años
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Resumen del Recurso

Pregunta 1

Pregunta
All of the following statements about electromagnetic radiation are true except
Respuesta
  • visible light represents a large portion of the electromagnetic spectrum
  • photons of visible light contain more energy than photons of microwave radiation
  • a wavelength is the distance between two successive crests of a wave
  • the wavelength of visible light is usually measured in nanometers
  • 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
  • retinal
  • phycobilins
  • its ability to absorb green light
  • its ability to reflect green light

Pregunta 3

Pregunta
A byproduct of photosynthesis is
Respuesta
  • carbon dioxide
  • water
  • oxygen
  • glucose
  • chlorophyll

Pregunta 4

Pregunta
All of the following are true of light dependent reactions of photosynthesis except
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  • NADPH is produced
  • photolysis occurs
  • ATP is produced
  • glucose is produced
  • it requires light

Pregunta 5

Pregunta
The oxygen used to build sugars during photosynthesis
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  • comes from glucose
  • is fixed during the light dependent reactions
  • comes from CO2
  • comes from H2O
  • comes from atmospheric oxygen

Pregunta 6

Pregunta
Photosystem I
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  • is the first photosystem in the series
  • has a reaction center with 2 beta carotene molecules poised to release high energy electrons
  • absorbs energy with a frequency of 680 nm
  • gets its replacement electrons directly from photolysis
  • is the only photosystem used in the cyclic pathway

Pregunta 7

Pregunta
Which of the following is not part of the light dependent reactions
Respuesta
  • stroma
  • the thylakoid membrane
  • P680
  • photolysis
  • ATP formation

Pregunta 8

Pregunta
Which of the following is not associated with a change in H+ concentration across the thylakoid membrane
Respuesta
  • ETC
  • photolysis
  • NADPH formation
  • rubsico
  • ATP synthase

Pregunta 9

Pregunta
Which of the following is not true of light independent reactions
Respuesta
  • produces carbs
  • carbon is fixed during this reaction
  • can occur at night
  • requires ATP
  • produces NADP

Pregunta 10

Pregunta
Light dependent reactions occur
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  • in the cytoplasm
  • in the stroma
  • in the Calvin Benson cycle
  • in the plasma membrane
  • 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?
Respuesta
  • conduct the light independent reactions during the day and the light independent reactions at night
  • photorespiration
  • fix CO2 during the day and then use it at nighttime
  • fix CO2 in 1 type of cell and then transfer it to another type of cell where it will be fixed a second time
  • 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
  • organized in rings within the ground tissue
  • scattered without a definite pattern throughout the ground
  • scattered but with the phloem inside the xylem
  • 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
  • the apical meristem gives rise to photosynthetic cells where the lateral gives rise to non photosynthetic cells
  • the lateral meristem is responsible for primary growth and the apical meristem is responsible for secondary growth
  • the lateral meristem is responsible for lengthening whereas the apical meristem is responsible for thickening
  • 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
  • water; sugar
  • gases; dissolved solute
  • sugar; water
  • negatively charges particles, positively charged particles

Pregunta 15

Pregunta
Photosynthetic cells in the mesophyll are
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  • parenchyma
  • sclerenchyma
  • collenchyma
  • vascular
  • dermal

Pregunta 16

Pregunta
Increased surface are for the absorption of water at the root level in vascular plants occur primarily because of
Respuesta
  • tubers
  • root hairs and nodules
  • rhizome
  • strobilus
  • 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
  • negative pressure
  • cohesion
  • adhesion
  • 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
  • transpiration of water molecules
  • cohesion-tension mechanism
  • a pressure gradient between the source and the sink
  • a water potential gradient

Pregunta 19

Pregunta
Guard cells swell and open the stomata when
Respuesta
  • solutes, like potassium ions, are pumped out of cells
  • soil water becomes scarce
  • it is the night for most C3 plants and C4 plants
  • there are chemical pollutants in the air
  • water along with ions like potassium and calcium move into the cells

Pregunta 20

Pregunta
In a flowering plant, fertilization occurs in the
Respuesta
  • stigma
  • style
  • ovary
  • anther
  • filament

Pregunta 21

Pregunta
During the plant life cycle, meiosis produces
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  • 4 haploid microspores and megaspores
  • endosperm
  • apical meristem
  • embryo sporophyte
  • 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
  • double fertilization
  • coevolution
  • germination
  • 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
  • cuttings
  • grafting
  • tissue culture propagation
  • 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
  • auxins stimulate cell elongation in growing tissues and inhibit growth at the axillary bud
  • abscisic acid opens stomata by pushing solutes into cells
  • cytokinins inhibit aging in the leaves
  • 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
Respuesta
  • blue light
  • green light
  • purple light
  • red light
  • 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
Respuesta
  • long day plant
  • short day plant
  • long night plant
  • biennial
  • perennial
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