WSU BIOLOGY 106 EXAM 1 ,2,3,4,5 AND FINAL COMPLETE COURSE
ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES |ALREADY GRADED A+
Which of the following statements is most likely to be true? - ANSWER: Water flows
into the direction of the lowest water potential.
Plasmolysis is a cellular loss of water. How can a cell potentially prevent this? -
ANSWER: Increasing the cytoplasmic solute concentration
What is correct about stomata movement control? Pick the Best. - ANSWER: Two of
the above.
Which tissue will an aphid quite specifically try to suck on? - ANSWER: Phloem
The water potential in the root of a plant is higher (more positive) than that in the
soil. Where does the water move to preferentially? - ANSWER: To the soil
Which of the following approaches is likely most successful in preventing soil
erosion? - ANSWER: Farming using contour tillage
Which of the following statements is correct about Rhizobia? - ANSWER: They are
able to generate ammonia from atmospheric nitrogen.
Which statements is true about nitrate (NO3-)? - ANSWER: Nitrate uptake in plants is
an independent process that results in a proton gradient.
What are the three main tissues in a plant? - ANSWER: Dermal, vascular, ground
tissue
Which of the following roots is developed in response to low oxygen? - ANSWER:
Pneumatophores
What is a likely reason that tropical trees develop buttress roots? - ANSWER: They
provide the trees with additional stability support
Roots gain length primarily through... - ANSWER: elongation growth
Leaves are normally photosynthetically active. As a consequence they... - ANSWER:
Show a net uptake of carbon dioxide.
Lateral meristems? - ANSWER: Are responsible for secondary growth.
What would you normally not find in the root? - ANSWER: Trichomes
, Xylem Sap mainly contains... - ANSWER: water and minerals
What is the difference between 'heartwood' and 'sapwood'? - ANSWER: In contrast
to sapwood, heartwood has lost its ability to transport water and minerals.
What does the majority of the dry weight of a plant body contains, and where does it
come from? - ANSWER: Carbon and air
Which of the following statements is correct with respect to 'Osmosis'? - ANSWER: It
is the movement of solvent molecules through a semi-permeable membrane into a
region of higher solute concentration.
Which of the following processes likely depends on the activity of a proton pump? -
ANSWER: Two of the above:
Sugar uptake
Uptake of Nitrate
If you add 2g of sugar to water, what do you think is happening to the water
potential? - ANSWER: It will become more negative.
Ion allocation from the soil into the vascular system... - ANSWER: Requires most
likely high levels of ATP.
Which of the following ions can be difficult to take up for plans based on its charge
and interaction with soil? - ANSWER: Potassium
In Frits Went's coleoptile experiment, what was the most likely phytohormone
transported from the coleoptile tip into the agar block? - ANSWER: Auxin
Which phytohormone is critical for controlling nutrient mobilization when seedlings
start to germinate? - ANSWER: Gibberellic Acid
The change in potato growth from dark to light conditions is an example of ? -
ANSWER: Photomorphism
Name the three basic plant organs. - ANSWER: Leaves, root, stem
Describe the most important role of root hairs. - ANSWER: Increases surface area
allowing for better collection of nutrients.
What is the difference between a stolon and a rhizome? - ANSWER: Stolon = above
ground
Rhizomes = below ground
Pneumatophores are good for what? - ANSWER: Providing oxygen in a swampy area.
ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES |ALREADY GRADED A+
Which of the following statements is most likely to be true? - ANSWER: Water flows
into the direction of the lowest water potential.
Plasmolysis is a cellular loss of water. How can a cell potentially prevent this? -
ANSWER: Increasing the cytoplasmic solute concentration
What is correct about stomata movement control? Pick the Best. - ANSWER: Two of
the above.
Which tissue will an aphid quite specifically try to suck on? - ANSWER: Phloem
The water potential in the root of a plant is higher (more positive) than that in the
soil. Where does the water move to preferentially? - ANSWER: To the soil
Which of the following approaches is likely most successful in preventing soil
erosion? - ANSWER: Farming using contour tillage
Which of the following statements is correct about Rhizobia? - ANSWER: They are
able to generate ammonia from atmospheric nitrogen.
Which statements is true about nitrate (NO3-)? - ANSWER: Nitrate uptake in plants is
an independent process that results in a proton gradient.
What are the three main tissues in a plant? - ANSWER: Dermal, vascular, ground
tissue
Which of the following roots is developed in response to low oxygen? - ANSWER:
Pneumatophores
What is a likely reason that tropical trees develop buttress roots? - ANSWER: They
provide the trees with additional stability support
Roots gain length primarily through... - ANSWER: elongation growth
Leaves are normally photosynthetically active. As a consequence they... - ANSWER:
Show a net uptake of carbon dioxide.
Lateral meristems? - ANSWER: Are responsible for secondary growth.
What would you normally not find in the root? - ANSWER: Trichomes
, Xylem Sap mainly contains... - ANSWER: water and minerals
What is the difference between 'heartwood' and 'sapwood'? - ANSWER: In contrast
to sapwood, heartwood has lost its ability to transport water and minerals.
What does the majority of the dry weight of a plant body contains, and where does it
come from? - ANSWER: Carbon and air
Which of the following statements is correct with respect to 'Osmosis'? - ANSWER: It
is the movement of solvent molecules through a semi-permeable membrane into a
region of higher solute concentration.
Which of the following processes likely depends on the activity of a proton pump? -
ANSWER: Two of the above:
Sugar uptake
Uptake of Nitrate
If you add 2g of sugar to water, what do you think is happening to the water
potential? - ANSWER: It will become more negative.
Ion allocation from the soil into the vascular system... - ANSWER: Requires most
likely high levels of ATP.
Which of the following ions can be difficult to take up for plans based on its charge
and interaction with soil? - ANSWER: Potassium
In Frits Went's coleoptile experiment, what was the most likely phytohormone
transported from the coleoptile tip into the agar block? - ANSWER: Auxin
Which phytohormone is critical for controlling nutrient mobilization when seedlings
start to germinate? - ANSWER: Gibberellic Acid
The change in potato growth from dark to light conditions is an example of ? -
ANSWER: Photomorphism
Name the three basic plant organs. - ANSWER: Leaves, root, stem
Describe the most important role of root hairs. - ANSWER: Increases surface area
allowing for better collection of nutrients.
What is the difference between a stolon and a rhizome? - ANSWER: Stolon = above
ground
Rhizomes = below ground
Pneumatophores are good for what? - ANSWER: Providing oxygen in a swampy area.
