Biology 1108 - Exam 2 Plant Diversity Questions with Correct Answers 2026

Biology 1108 - Exam 2 Plant Diversity
Questions with Correct Answers 2026
Primary producers - CORRECT ANSWER -base of many food chains

-fuel, fiber, habitat

-photosythesis



Three domains - CORRECT ANSWER -two prokaryotic groups: bacteria and archaea

Eukaryotic group: eukarya



All eukaryotes share - CORRECT ANSWER -membrane bound nucleus and other organelles

-there are many lineages of clades of eukarya, most of them are unicellular



Protist - CORRECT ANSWER -all eukarya except land plants, fungi, and animals

-simple cellular organization

-abundant in aquatic environemtns

-7 major clades



Algae - CORRECT ANSWER -photosynthetic organisms that occur in several different clades

-land plants evolved from a green algal ancestor



Primary endosymbiosis - CORRECT ANSWER -
protist engulfed cyanobacteria led to the first photosynthetic eukaryote



Five characteristics of green algae - CORRECT ANSWER -1. Have a range of growth forms

2. Wide variety of habitats

, 3. Chlorophyll a and b X 2 X 2 X 2




4. Starch is a storage product in plastids
X 2 X 2 X 2 X 2 X 2 X 2




5. Cell wall with cellulose
X 2 X 2 X 2




When did plants move onto land? - CORRECT ANSWER -475 million years ago
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




-evidence from unicellular, haploid spores containing sporopollenin
X 2 X 2 X 2 X 2 X 2 X 2




Bryophytes - CORRECT ANSWER - X 2 X 2 X 2 X 2




earliest diverging group of plants - mosses, liverworts, hornworts
X 2 X 2 X 2 X 2 X 2 X2 X 2 X 2




Synapomorphies:

1. Cuticles

2. Stomata



Characteristics of bryophytes - CORRECT ANSWER --small X 2 X 2 X 2 X 2 X 2 X 2




-non-vascular

-no true roots or leaves - rhizoids for water uptake
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




-no secondary cell walls of any kind
X 2 X 2 X 2 X 2 X 2 X 2




-haploid



Key differences between coleochaetes&stoneworts and bryophytes - CORRECT ANSWER -
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




1. There is both a multicellular haploid phase and a multicellular diploid phase
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




2. The egg is fertilized in the archegonia
X 2 X 2 X 2 X 2 X 2 X 2




Alternation of generations - CORRECT ANSWER - X 2 X 2 X 2 X 2 X 2 X 2




there is both a multicellular haploid phase and a multicellular diploid phase
X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




- so a haploid generation and a diploid generation
X2 X 2 X 2 X 2 X 2 X 2 X 2 X 2




-all land plants have an alternation of generations
X 2 X 2 X 2 X 2 X 2 X 2 X 2