All of the following statements about electromagnetic radiation are true except
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
The color of a green leaf is due to
beta carotene
retinal
phycobilins
its ability to absorb green light
its ability to reflect green light
A byproduct of photosynthesis is
carbon dioxide
water
oxygen
glucose
chlorophyll
All of the following are true of light dependent reactions of photosynthesis except
NADPH is produced
photolysis occurs
ATP is produced
glucose is produced
it requires light
The oxygen used to build sugars during photosynthesis
comes from glucose
is fixed during the light dependent reactions
comes from CO2
comes from H2O
comes from atmospheric oxygen
Photosystem I
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
Which of the following is not part of the light dependent reactions
stroma
the thylakoid membrane
P680
photolysis
ATP formation
Which of the following is not associated with a change in H+ concentration across the thylakoid membrane
ETC
NADPH formation
rubsico
ATP synthase
Which of the following is not true of light independent reactions
produces carbs
carbon is fixed during this reaction
can occur at night
requires ATP
produces NADP
Light dependent reactions occur
in the cytoplasm
in the stroma
in the Calvin Benson cycle
in the plasma membrane
in the thylakoid membrane
Which of the following is an adaptation that some plants have made to continue photosynthesis at high rates, even under arid conditions?
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
The common distribution patterns of vascular tissue in eudicot stems are characterized by vascular bundles being
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
The difference between apical meristem and lateral meristem is that
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
Phloem is the transport of ________ as xylem is to the transport of ________.
minerals; charged ions
water; sugar
gases; dissolved solute
sugar; water
negatively charges particles, positively charged particles
Photosynthetic cells in the mesophyll are
parenchyma
sclerenchyma
collenchyma
vascular
dermal
Increased surface are for the absorption of water at the root level in vascular plants occur primarily because of
tubers
root hairs and nodules
rhizome
strobilus
stolon and tubers
During transpiration, water molecules stick together in order to move through the xylem because of
positive pressure
negative pressure
cohesion
adhesion
water potential
Sugar is transported from leaves to roots primarily because of
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
Guard cells swell and open the stomata when
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
In a flowering plant, fertilization occurs in the
stigma
style
ovary
anther
filament
During the plant life cycle, meiosis produces
4 haploid microspores and megaspores
endosperm
apical meristem
embryo sporophyte
integuments
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
pollinization
double fertilization
coevolution
germination
penetration
Which of the following methods of reproduction does not end with the offspring having identical genes to the parent plant
vegetative reproduction
cuttings
grafting
tissue culture propagation
sexual reproduction
Which of the following hormones is not correctly matched with its function
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
In order to reset a biological clock, phytochrome is stimulates to switch from an inactive to active form by
blue light
green light
purple light
red light
far-red light
If a plant only blooms if it gets more than 12 hours of sunlight it is considered to be a
long day plant
short day plant
long night plant
biennial
perennial
