Plant Physiology Exam quizzes and
answers graded A+
From what organism did the first bryophytes likely evolve? - ANS✅✅green algae
Which of the following is a characteristic of the first land plants? - ANS✅✅sporopollenin covering
spores
When the first land plant colonized land from an aquatic environment, which of the following was an
advantage in this new environment? Select all possible answers. - ANS✅✅few herbivores,
increased CO2 availability, increased light availability
Looking at figure 28.6, nonvascular plants are a mono- or paraphyletic group? -
ANS✅✅paraphyletic
Looking at figure 28.6, early vascular plants (club mosses, whisk ferns, ferns and horsetails) are part
of which monophyletic group? - ANS✅✅vascular plants
What is unusual about the green, leafy part of bryophytes? (video) - ANS✅✅it is haploid
By what process are gametes (sperm and eggs) formed in plants? (video) - ANS✅✅mitosis
What tissue aids woody land plants to grow tall? (video) - ANS✅✅vascular tissue (esp. xylem)
Which of the following are important for preventing water loss from leaves of land plants? (video)
(Select all possible answers) - ANS✅✅stomata, cuticle
Which wavelengths of light are most responsible for photosynthesis? - ANS✅✅blue, red
Where is chlorophyll located in the chloroplast? - ANS✅✅thylakoid
Which of the following pigments forms the center of the reaction center? - ANS✅✅chlorophyll a
, Plants capture the energy in light and produce what form of potential energy that will be used to
produce ATP? - ANS✅✅H+ accumulation in the thylakoid space
Why is the pH in the thylakoid space so much lower than in the stroma in the light, but not so much
in the dark? - ANS✅✅light provides the energy to transport H+ ions into the thylakoid space
Which of the following is NOT a way in which the electron transport of respiration and
photosynthesis are similar? - ANS✅✅both require water
Which of the following is NOT true about photorespiration? - ANS✅✅it's how plants acquire
energy
Identify the structure that each of the numbers in the figure indicates - ANS✅✅1 - cuticle
2 - mesophyll
3 - stoma
4 - guard cells
Which of the following are among the first carbohydrates formed by algae and green plants when
exposed to light? - ANS✅✅3PGA (3 phosphoglycerate)
Where is Rubisco located? - ANS✅✅stroma
What is NOT true about photorespiration? - ANS✅✅it is the way plants obtain energy
How is photosynthesis connected to the ice of Greenland? Select all that apply. - ANS✅✅Plants
consume CO2, but increased atmospheric CO2 is accelerating the melting of ice
In C3 plants growing in optimal conditions, stomata open during the day and close during the night. -
ANS✅✅True
Which plants better utilize short flashes of light? - ANS✅✅understory plants
If there is no net CO2 uptake that means the plant is not building biomass. Which of the following is
true? - ANS✅✅rate of photosynthesis = respiration
answers graded A+
From what organism did the first bryophytes likely evolve? - ANS✅✅green algae
Which of the following is a characteristic of the first land plants? - ANS✅✅sporopollenin covering
spores
When the first land plant colonized land from an aquatic environment, which of the following was an
advantage in this new environment? Select all possible answers. - ANS✅✅few herbivores,
increased CO2 availability, increased light availability
Looking at figure 28.6, nonvascular plants are a mono- or paraphyletic group? -
ANS✅✅paraphyletic
Looking at figure 28.6, early vascular plants (club mosses, whisk ferns, ferns and horsetails) are part
of which monophyletic group? - ANS✅✅vascular plants
What is unusual about the green, leafy part of bryophytes? (video) - ANS✅✅it is haploid
By what process are gametes (sperm and eggs) formed in plants? (video) - ANS✅✅mitosis
What tissue aids woody land plants to grow tall? (video) - ANS✅✅vascular tissue (esp. xylem)
Which of the following are important for preventing water loss from leaves of land plants? (video)
(Select all possible answers) - ANS✅✅stomata, cuticle
Which wavelengths of light are most responsible for photosynthesis? - ANS✅✅blue, red
Where is chlorophyll located in the chloroplast? - ANS✅✅thylakoid
Which of the following pigments forms the center of the reaction center? - ANS✅✅chlorophyll a
, Plants capture the energy in light and produce what form of potential energy that will be used to
produce ATP? - ANS✅✅H+ accumulation in the thylakoid space
Why is the pH in the thylakoid space so much lower than in the stroma in the light, but not so much
in the dark? - ANS✅✅light provides the energy to transport H+ ions into the thylakoid space
Which of the following is NOT a way in which the electron transport of respiration and
photosynthesis are similar? - ANS✅✅both require water
Which of the following is NOT true about photorespiration? - ANS✅✅it's how plants acquire
energy
Identify the structure that each of the numbers in the figure indicates - ANS✅✅1 - cuticle
2 - mesophyll
3 - stoma
4 - guard cells
Which of the following are among the first carbohydrates formed by algae and green plants when
exposed to light? - ANS✅✅3PGA (3 phosphoglycerate)
Where is Rubisco located? - ANS✅✅stroma
What is NOT true about photorespiration? - ANS✅✅it is the way plants obtain energy
How is photosynthesis connected to the ice of Greenland? Select all that apply. - ANS✅✅Plants
consume CO2, but increased atmospheric CO2 is accelerating the melting of ice
In C3 plants growing in optimal conditions, stomata open during the day and close during the night. -
ANS✅✅True
Which plants better utilize short flashes of light? - ANS✅✅understory plants
If there is no net CO2 uptake that means the plant is not building biomass. Which of the following is
true? - ANS✅✅rate of photosynthesis = respiration
