UF BSC 2011 | Exam 1 Review Questions | University of Florida | 2025–2026 | Complete Concept Q&A with Verified Solutions

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UF BSC 2011 Exam 1 Review Questions, Exam 1
BSC2011 UF 2019, UF BSC2011: Exam 1 Questions and
Correct Answers/ Latest Update / Already Graded
Clade

Ans: part of a phylogenic tree that contains an ancestor and all descendants of
that ancestor


Data that can be used to build a phylogenic tree

Ans: Morphology (observable physical characteristics) and molecular sequences
(nucleotides, amino acids)


Synapamorphy

Ans: shared derived traits that provide evidence of a common ancestry of a
group


Synapamorphy ancestral or derived trait?

Ans: Derived


Three domains of life

Ans: Bacteria (prokaryotes), Archaea (prokaryotes), Eukarya (eukaryotes)


Photoautotroph

Ans: Organism that use light to generate ATP for the purpose of carbon
fixation


How did evolution of photosynthesis change the earth?




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Ans: Filled environment with oxygen. Created vast diversity within the kingdom
Eukarya.


Lateral transfer

Ans: When genes move from one species to another


Endosymbiosis

Ans: When two organisms compliment each other and one of the two
organisms lives within the other


What organelles did eukaryotes acquire in endosymbiosis?

Ans: Mitochondria, chloroplasts


Are all photosynthetic eukaryotes plants?

Ans: NO!!


Dominant form in bryophyte life cycle

Ans: Gametophyte


Do bryophyte sporophyte and gametophyte live independently?

Ans: No, sporophyte is dependent on gametophyte


Red algae vs. Green plants

Ans: Red algae chlorophyll A only, green algae chlorophyll A and B. Red algae
varies from single celled organisms to complex multicellular organisms.


Streptophyte Synapamorphies


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Ans: retention of egg in parental organisms, apical growth, oogamy,
plasmodesmata


Plasmodesmata

Ans: small holes/ channels that make water transport much easier


Parenchyma

Ans: Basic tissue type in the streptophytes with cells linked by plasmodesmata


Land plant synapamorphies

Ans: cuticle, stomata, gametangia, embryo, pigments, sporopollenin,
mycorrhizae


Cuticle

Ans: a waxy coating that protects from water loss, disease, sun and organisms
who are predators


Stomata

Ans: small openings that allow for gas exchange in air while minimizing water
loss


Sporopollenin

Ans: protective coating for spores


Mycorrhizae plants




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Ans: Plants that have mutually beneficial association with fungi, fungi attach to
plant roots and increase surface area of roots allowing for more water to be
taken up throught the plant


Groups of plants within the bryophytes

Ans: liverworts, horntails and mosses


Are bryophytes a clade?

Ans: NO!


Primary characteristics of bryophytes

Ans: no vascular system, very small, no structure to keep them off the ground,
no structure to transfer food and water through the plant


Why do bryophytes tend to live in moist habitats?

Ans: bryophytes move nutrients through diffusion and osmosis so they have to
be near water to survive


Dominant form in the bryophyte life cycle

Ans: Gametophyte


Can bryophyte sporophytes and gametophytes live indepedently?

Ans: No. Sporophyte is physiologically dependent on the gametophyte.


Where are bryophyte gametes produced?

Ans: Archegonium (female sex organ) and antheridium (male sex organ)




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