WorksheetsHort Environmental Factors Review
Total questions: 33
Worksheet time: 18mins
What type of light is used in photosynthesis?
gamma rays
visible light
ultraviolet light
radio waves
Light is measured in _____ or the _____ of the waves.
nanometers, height
micrometers, height
nanometers, length
micrometers, length
The two most important colors for photosynthesis are ____ and ____.
green, red
green, blue
blue, red
red, purple
True or False: Chlorophyll is the only pigment used in photosynthesis.
True
False
Which of the following is NOT a function of red light in plants?
seed germination
seedling growth
stem elongation
stem strength
Which of the following is NOT a function of blue light in plants?
stem strength
seed germination
increases branching
reduces stem length
What type of light triggers a shade avoidance response in plants?
blue
far blue
red
far red
Which of the following is NOT a role of far red light?
promotes leaf and flower color
stem stretching
breaking seed dormancy
inducing photoperiod responses
Light (a) refers to the strength or amount of light produced.
Light intensity is measured in _________ and industry uses _____.
foot candles, lumens
foot candles, nanometers
nanometers, lumens
nanometers, foot candles
The growth of plants in low or no light.
chlorosis
photoperiod
etiolation
SDP
A type of photoreceptor that detects day length by absorbing light.
photochrome
photoperiod
photosynthesis
nanometer
A plant that flowers when the days are shorter than the nights has a photoperiod of ______.
long day plant
short day plant
day neutral plant
The openings in a leaf's surface that exchanges gas.
guard cells
stomata
cuticle
mesophyll
The loss of water vapor through the stomata.
respiration
evaporation
transpiration
photosynthesis
The amount of water vapor in the air.
(a)
Which of the following statements are true? Select all that apply.
high humidity = high transpiration
high humidity = low transpiration
low humidity = low transpiration
low humidity = high transpiration
Which of the following increases transpiration? Select all that apply.
low humidity
low pollution
ventilation
vernalization
In field crops, if you have too harsh of wind, it is a good idea to add _________ to reduce the risk of wind tunnels or harm to plants
ventilation fans
windbreaks
tunnels
treebreaks
Select 2 ways that plants adapt to COLDER environments.
grow smaller leaves
grow lower to the ground
create thicker cuticles
have shorter life cycles
A plant's ability to withstand low temperatures is called _____.
heat zones
transpiration
resilience
hardiness
On both hardiness and heat zone maps, the lower the number the _______ the temperature.
lower
higher
Most plants start to experience a reduction in productivity due to heat at what temperature?
75*F
81*F
86*F
105*F
A term used to describe a plant's response to different temperatures.
photoperiod
thermoperiod
thermodynamics
wilting
A type of thermoperiod that requires a cold temperature before flowering or germination can occur.
thermoperiod
transpiration
LDP
Vernalization
The difference between day and night temperature.
LDP
SHD
Thermoperiod
DIF
If the day temperature is colder than the night temperature there is a ______ DIF.
positive
negative
zero
A positive DIF results in ...
shorter stems
no stem change
longer stems
Which of the following is NOT a function of water in plants.
carry materials through xylem and phloem
dissolve nutrients and minerals
makes up plant cells, tissues, and organs
determines the thermoperiod reaction
The total amount of water a soil can hold against the force of gravity.
gravitational water
capillary water
hygroscopic water
water holding capacity
True or False: Total porosity measures both the amount of air and the amount of water in a media/soil.
True
False
The only type of water available for a plant to use.
capillary water
gravitational water
hygroscopic water
The type of water that will run out of the drainage holes.
capillary water
gravitational water
hygroscopic water
