About this Study Set
This study set covers Biology through
20 practice questions.
A challenging assessment of plant physiology, ecological processes, and botanical classification. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 20 questions from the
Advanced Botanical and Ecological Literacy study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which plant hormone is primarily responsible for the closure of stomata during periods of water stress?
-
A
Auxin
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B
Gibberellin
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C
Abscisic acid
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D
Ethylene
2
In the context of plant vascular tissue, which cells are characterized by having thick, lignified secondary walls and are typically dead at maturity?
-
A
Parenchyma
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B
Collenchyma
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C
Sclerenchyma
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D
Companion cells
3
Which process describes the movement of sugars from source tissues to sink tissues in plants?
-
A
Transpiration
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B
Translocation
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C
Osmosis
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D
Guttation
4
What is the primary function of the Casparian strip in plant roots?
-
A
To facilitate lateral root growth
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B
To control the entry of water into the vascular cylinder
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C
To store starch reserves
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D
To protect the root apical meristem
5
Which type of photosynthesis is an adaptation for plants in arid environments to minimize photorespiration by fixing CO2 at night?
-
A
C3 photosynthesis
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B
C4 photosynthesis
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C
CAM photosynthesis
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D
Chemosynthesis
6
The mutualistic relationship between plant roots and fungi that aids in nutrient uptake is known as what?
-
A
Rhizobia
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B
Mycorrhiza
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C
Lichens
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D
Endophytes
7
What is the specific name for the male gametophyte of a seed plant?
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A
Ovule
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B
Pollen grain
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C
Carpel
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D
Embryo sac
8
Which plant pigment is essential for detecting the ratio of red to far-red light to regulate germination and flowering?
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A
Carotenoid
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B
Chlorophyll b
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C
Anthocyanin
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D
Phytochrome
9
In woody plants, what tissue forms the annual growth rings observed in a cross-section of the trunk?
-
A
Primary xylem
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B
Secondary xylem
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C
Primary phloem
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D
Cork cambium
10
Which phenomenon involves a plant's growth response to mechanical stimuli, such as wind or touch?
-
A
Thigmotropism
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B
Phototropism
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C
Gravitropism
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D
Hydrotropism
11
What is the term for the shedding of plant parts, such as leaves or fruit, in response to hormonal signals?
-
A
Senescence
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B
Abscission
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C
Dormancy
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D
Vernalization
12
Which specific floral part matures to become the fruit in angiosperms?
-
A
Stigma
-
B
Style
-
C
Ovary
-
D
Ovule
13
What is the primary structural polysaccharide found in the cell walls of plants?
-
A
Chitin
-
B
Glycogen
-
C
Cellulose
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D
Amylose
14
Which element is the central atom in a chlorophyll molecule?
-
A
Iron
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B
Magnesium
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C
Calcium
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D
Potassium
15
Plants that complete their entire life cycle—from germination to seed production—within a single growing season are called what?
-
A
Perennials
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B
Biennials
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C
Ephemeral
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D
Annuals
16
What is the term for the process where water is released from the leaves of plants in liquid form, typically through hydathodes?
-
A
Evaporation
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B
Transpiration
-
C
Guttation
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D
Condensation
17
Which meristematic tissue is responsible for the secondary growth (increase in thickness) of stems and roots?
-
A
Apical meristem
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B
Lateral meristem
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C
Intercalary meristem
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D
Ground meristem
18
Which plant defense mechanism involves the production of chemical compounds that inhibit the growth of competing plants?
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A
Allellopathy
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B
Commensalism
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C
Symbiosis
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D
Mimicry
19
The conversion of atmospheric nitrogen into ammonia by bacteria in root nodules is known as what?
-
A
Nitrogen fixation
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B
Denitrification
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C
Nitrification
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D
Assimilation
20
What type of plant tissue is responsible for the transport of water and dissolved mineral nutrients from the roots to the shoots?
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A
Phloem
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B
Xylem
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C
Epidermis
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D
Cambium
