BIOLOGY
Brooks Biodiversity Unit 3 Exam | 110 Multiple-Choice
Questions and Answers with Detailed Explanations | Plant
& Animal Biology Study Guide | Guaranteed Pass
ASCORERS STUVIA
This Document Contains:
Brooks Biodiversity Unit 3 Exam
2025/26 110 Questions, Correct Answers & Ratinales
100% Guaranteed Pass
Complete A+ Guide
, Brooks Biodiversity Unit 3 Exam | 110 Multiple-Choice
Questions and Answers with Detailed Explanations | Plant &
Animal Biology Study Guide | Guaranteed Pass
Section 1: Plant Architecture & Physiology
1. :What are the four primary needs of a plant's architecture?
A) Photosynthesis, Respiration, Transpiration, Reproduction
B) Collection of solar energy, Leaf support, Anchorage, Transport
C) Gas exchange, Sugar production, Water absorption, Growth
D) Flowering, Seed dispersal, Pollination, Germination
Correct Answer: B) Collection of solar energy, Leaf support, Anchorage, Transport
Explanation: This option correctly matches the core architectural functions to their
corresponding plant organs: leaves (solar energy), stems (support), roots (anchorage), and
the vascular system (transport).
2. :The primary function of leaves is:
A) Anchorage and absorption
B) Collection and conversion of solar energy
,C) Positioning and support of leaves
D) Transport of fluids
Correct Answer: B) Collection and conversion of solar energy
Explanation: Leaves are the primary photosynthetic organs, specialized to capture light
energy and convert it into chemical energy.
3. :The outermost cell layer of a plant body is the:
A) Cuticle
B) Mesophyll
C) Epidermis
D) Cortex
Correct Answer: C) Epidermis
Explanation: The epidermis is the outermost layer of cells, providing a protective barrier for
the plant.
4. :The waxy, waterproof covering of a plant produced by the epidermis is the:
A) Casparian strip
B) Cuticle
C) Cork
D) Mesoglea
Correct Answer: B) Cuticle
Explanation: The cuticle is a waxy layer secreted by the epidermal cells to prevent water loss
(desiccation).
, 5. :Guard cells work together with ______ to regulate gas exchange.
A) Cuticle
B) Stomata
C) Lenticels
D) Trichomes
Correct Answer: B) Stomata
Explanation: Stomata are the pores, and guard cells are the specialized cells that surround
them, controlling their opening and closing to manage gas exchange and water loss.
6. :The small openings on a leaf through which oxygen and carbon dioxide can move are
called:
A) Lenticels
B) Hydathodes
C) Stomata
D) Pith
Correct Answer: C) Stomata
Explanation: Stomata are the microscopic pores primarily responsible for gas exchange (CO2
in, O2 out) in leaves.
7. :The two main aspects of photosynthesis are:
A) Glycolysis and the Krebs cycle
B) Light-dependent and light-independent reactions
C) Carbon fixation and nitrogen fixation
Brooks Biodiversity Unit 3 Exam | 110 Multiple-Choice
Questions and Answers with Detailed Explanations | Plant
& Animal Biology Study Guide | Guaranteed Pass
ASCORERS STUVIA
This Document Contains:
Brooks Biodiversity Unit 3 Exam
2025/26 110 Questions, Correct Answers & Ratinales
100% Guaranteed Pass
Complete A+ Guide
, Brooks Biodiversity Unit 3 Exam | 110 Multiple-Choice
Questions and Answers with Detailed Explanations | Plant &
Animal Biology Study Guide | Guaranteed Pass
Section 1: Plant Architecture & Physiology
1. :What are the four primary needs of a plant's architecture?
A) Photosynthesis, Respiration, Transpiration, Reproduction
B) Collection of solar energy, Leaf support, Anchorage, Transport
C) Gas exchange, Sugar production, Water absorption, Growth
D) Flowering, Seed dispersal, Pollination, Germination
Correct Answer: B) Collection of solar energy, Leaf support, Anchorage, Transport
Explanation: This option correctly matches the core architectural functions to their
corresponding plant organs: leaves (solar energy), stems (support), roots (anchorage), and
the vascular system (transport).
2. :The primary function of leaves is:
A) Anchorage and absorption
B) Collection and conversion of solar energy
,C) Positioning and support of leaves
D) Transport of fluids
Correct Answer: B) Collection and conversion of solar energy
Explanation: Leaves are the primary photosynthetic organs, specialized to capture light
energy and convert it into chemical energy.
3. :The outermost cell layer of a plant body is the:
A) Cuticle
B) Mesophyll
C) Epidermis
D) Cortex
Correct Answer: C) Epidermis
Explanation: The epidermis is the outermost layer of cells, providing a protective barrier for
the plant.
4. :The waxy, waterproof covering of a plant produced by the epidermis is the:
A) Casparian strip
B) Cuticle
C) Cork
D) Mesoglea
Correct Answer: B) Cuticle
Explanation: The cuticle is a waxy layer secreted by the epidermal cells to prevent water loss
(desiccation).
, 5. :Guard cells work together with ______ to regulate gas exchange.
A) Cuticle
B) Stomata
C) Lenticels
D) Trichomes
Correct Answer: B) Stomata
Explanation: Stomata are the pores, and guard cells are the specialized cells that surround
them, controlling their opening and closing to manage gas exchange and water loss.
6. :The small openings on a leaf through which oxygen and carbon dioxide can move are
called:
A) Lenticels
B) Hydathodes
C) Stomata
D) Pith
Correct Answer: C) Stomata
Explanation: Stomata are the microscopic pores primarily responsible for gas exchange (CO2
in, O2 out) in leaves.
7. :The two main aspects of photosynthesis are:
A) Glycolysis and the Krebs cycle
B) Light-dependent and light-independent reactions
C) Carbon fixation and nitrogen fixation
