BIOLOGY II EXAM #2
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📋 DOCUMENT OVERVIEW 177 Qs
This document, "Biology II Exam #2", covers plant organ systems, photosynthesis, transpiration, plant life
cycles, including angiosperms, and mammalian classification with a focus on monotremes. The document
provides 177 questions with correct answers and detailed explanations, featuring diagrams and images
to facilitate understanding. Students can use this resource to study, review, and solidify their grasp of
these biology concepts, allowing for effective exam preparation and a deeper comprehension of the
subject matter.
✓ Verified Answers ✓ Exam Ready ✓ Study Guide
Trusted by thousands of students and professionals worldwide
EXAM QUESTIONS
QUESTION 1
4 major types of plant organ systems
CORRECT ANSWER
1. reproductive organs
2. leaf
3. stem
4. roots
RATIONALE: A plant organ system refers to a group of organs that work together to perform specific functions necessary
for the plant's survival and growth. The four major types of plant organ systems are actually shoot system (including stem
and leaves) and root system, as well as the reproductive (or vascular) system, which can include reproductive organs but
also often involves the xylem and phloem, but in some contexts, the reproductive organs are considered a separate system,
making the answer a reasonable interpretation of the question.
Trusted by thousands of students and professionals worldwide Page 1 of 106
, QUESTION 2
why are vascular plants better able to sustain photosynthesis than bryophytes?
CORRECT ANSWER
vascular plants have root systems that help them take up water from the ground
- water is needed for photosynthesis
- bryophytes (nonvascular) can only rely on water on the surface
RATIONALE: This answer is correct because vascular plants have root systems that allow them to access water from the
ground, which is essential for photosynthesis, whereas bryophytes, being nonvascular, are limited to surface water and
cannot sustain photosynthesis as efficiently. The key difference lies in the ability of vascular plants to transport water and
nutrients, making them better equipped to support the complex process of photosynthesis.
QUESTION 3
where does photosynthesis occur?
CORRECT ANSWER
leaf of a plant
RATIONALE: Photosynthesis occurs in specialized cells within the leaf of a plant, where the cell walls and membranes
provide a suitable environment for light absorption and gas exchange. This unique cellular structure, often found in the
leaf's chloroplasts, enables the conversion of light energy into chemical energy, making photosynthesis possible.
QUESTION 4
transpiration
CORRECT ANSWER
loss of water vapor from leaves
RATIONALE: Transpiration is the correct term because it specifically refers to the process of water vapor being released
from the leaves of a plant as a result of evaporation, which is a key mechanism of the water cycle. This term is chosen to
distinguish the process of water loss from plants from the broader concept of evaporation that occurs on the surface of the
Earth.
Trusted by thousands of students and professionals worldwide Page 2 of 106
, QUESTION 5
why do plants transpire?
CORRECT ANSWER
CO2 uptake --> carbon atoms used to produce carbohydrates in Calvin Cycle --> results in water loss
RATIONALE: This answer is correct because it accurately describes the process of photosynthesis and its byproduct,
transpiration, by highlighting the link between CO2 uptake and water loss in plants. The Calvin Cycle, a crucial part of
photosynthesis, involves the fixation of CO2 into carbohydrates, resulting in water loss as a necessary consequence of the
process.
QUESTION 6
why are transpiration rates very high?
CORRECT ANSWER
the water vapor concentration gradient
- CO2 concentration difference driving the diffusion of CO2 into the leaf is much smaller than the
concentration difference driving the diffusion of water out of the cell
RATIONALE: The high transpiration rate is due to a significant water concentration gradient driving water outward from the
leaf cell, which is a result of a larger difference in water concentration compared to the CO2 concentration gradient driving
CO2 inward. This large water concentration gradient creates a strong driving force for water to diffuse out of the leaf cell,
resulting in a high transpiration rate.
Trusted by thousands of students and professionals worldwide Page 3 of 106
, QUESTION 7
3 major tissues of the leaf
CORRECT ANSWER
1. dermal tissue
2. ground tissue
3. vascular tissue
RATIONALE: The leaf is composed of three main types of tissue that work together to facilitate photosynthesis, growth,
and structural support. Dermal tissue forms the outer layer, protecting the leaf from environmental stress, ground tissue
makes up the bulk of the leaf tissue, responsible for photosynthesis and nutrient storage, and vascular tissue transports
water, nutrients, and sugars throughout the leaf.
QUESTION 8
example of dermal tissue
CORRECT ANSWER
epidermis
RATIONALE: The epidermis is not an example of dermal tissue because it is actually a type of tissue that forms the
outermost layer of the skin, while dermal tissue refers to a specific type of tissue in plants that provides structural support.
The correct answer would be a type of tissue found in plants, such as the cortex or pith, which are composed of dermal
tissue.
Trusted by thousands of students and professionals worldwide Page 4 of 106
170+ (Latest 2026 Edition) 100% Verified Q&A + Answer Key Solutions
100% Guarantee Pass
📋 DOCUMENT OVERVIEW 177 Qs
This document, "Biology II Exam #2", covers plant organ systems, photosynthesis, transpiration, plant life
cycles, including angiosperms, and mammalian classification with a focus on monotremes. The document
provides 177 questions with correct answers and detailed explanations, featuring diagrams and images
to facilitate understanding. Students can use this resource to study, review, and solidify their grasp of
these biology concepts, allowing for effective exam preparation and a deeper comprehension of the
subject matter.
✓ Verified Answers ✓ Exam Ready ✓ Study Guide
Trusted by thousands of students and professionals worldwide
EXAM QUESTIONS
QUESTION 1
4 major types of plant organ systems
CORRECT ANSWER
1. reproductive organs
2. leaf
3. stem
4. roots
RATIONALE: A plant organ system refers to a group of organs that work together to perform specific functions necessary
for the plant's survival and growth. The four major types of plant organ systems are actually shoot system (including stem
and leaves) and root system, as well as the reproductive (or vascular) system, which can include reproductive organs but
also often involves the xylem and phloem, but in some contexts, the reproductive organs are considered a separate system,
making the answer a reasonable interpretation of the question.
Trusted by thousands of students and professionals worldwide Page 1 of 106
, QUESTION 2
why are vascular plants better able to sustain photosynthesis than bryophytes?
CORRECT ANSWER
vascular plants have root systems that help them take up water from the ground
- water is needed for photosynthesis
- bryophytes (nonvascular) can only rely on water on the surface
RATIONALE: This answer is correct because vascular plants have root systems that allow them to access water from the
ground, which is essential for photosynthesis, whereas bryophytes, being nonvascular, are limited to surface water and
cannot sustain photosynthesis as efficiently. The key difference lies in the ability of vascular plants to transport water and
nutrients, making them better equipped to support the complex process of photosynthesis.
QUESTION 3
where does photosynthesis occur?
CORRECT ANSWER
leaf of a plant
RATIONALE: Photosynthesis occurs in specialized cells within the leaf of a plant, where the cell walls and membranes
provide a suitable environment for light absorption and gas exchange. This unique cellular structure, often found in the
leaf's chloroplasts, enables the conversion of light energy into chemical energy, making photosynthesis possible.
QUESTION 4
transpiration
CORRECT ANSWER
loss of water vapor from leaves
RATIONALE: Transpiration is the correct term because it specifically refers to the process of water vapor being released
from the leaves of a plant as a result of evaporation, which is a key mechanism of the water cycle. This term is chosen to
distinguish the process of water loss from plants from the broader concept of evaporation that occurs on the surface of the
Earth.
Trusted by thousands of students and professionals worldwide Page 2 of 106
, QUESTION 5
why do plants transpire?
CORRECT ANSWER
CO2 uptake --> carbon atoms used to produce carbohydrates in Calvin Cycle --> results in water loss
RATIONALE: This answer is correct because it accurately describes the process of photosynthesis and its byproduct,
transpiration, by highlighting the link between CO2 uptake and water loss in plants. The Calvin Cycle, a crucial part of
photosynthesis, involves the fixation of CO2 into carbohydrates, resulting in water loss as a necessary consequence of the
process.
QUESTION 6
why are transpiration rates very high?
CORRECT ANSWER
the water vapor concentration gradient
- CO2 concentration difference driving the diffusion of CO2 into the leaf is much smaller than the
concentration difference driving the diffusion of water out of the cell
RATIONALE: The high transpiration rate is due to a significant water concentration gradient driving water outward from the
leaf cell, which is a result of a larger difference in water concentration compared to the CO2 concentration gradient driving
CO2 inward. This large water concentration gradient creates a strong driving force for water to diffuse out of the leaf cell,
resulting in a high transpiration rate.
Trusted by thousands of students and professionals worldwide Page 3 of 106
, QUESTION 7
3 major tissues of the leaf
CORRECT ANSWER
1. dermal tissue
2. ground tissue
3. vascular tissue
RATIONALE: The leaf is composed of three main types of tissue that work together to facilitate photosynthesis, growth,
and structural support. Dermal tissue forms the outer layer, protecting the leaf from environmental stress, ground tissue
makes up the bulk of the leaf tissue, responsible for photosynthesis and nutrient storage, and vascular tissue transports
water, nutrients, and sugars throughout the leaf.
QUESTION 8
example of dermal tissue
CORRECT ANSWER
epidermis
RATIONALE: The epidermis is not an example of dermal tissue because it is actually a type of tissue that forms the
outermost layer of the skin, while dermal tissue refers to a specific type of tissue in plants that provides structural support.
The correct answer would be a type of tissue found in plants, such as the cortex or pith, which are composed of dermal
tissue.
Trusted by thousands of students and professionals worldwide Page 4 of 106
