BIODIVERSITY EXAM #3 2026 UPDATED EXAM
QUESTIONS & ANSWERS WITH DETAILED RATIONALES |
INSTANT PDF DOWNLOAD
Porifera are also known as - correct answer -sponges
We used to group animals by what before we grouped them molecularly? - correct answer -
Though body plans
How do variations in body plan affect movement and interactions with the environment? -
correct answer -Radial symmetry - sessile; slow-moving; move equally well in all directions
Bilateral - cephalization; directed movement; improvement in capture of prey and escape of
capture
Symmetry - correct answer -Radial and bilateral
Body cavities of many animals function as - correct answer -hydrostatic skeletons
Fluid within the cavity shifts during muscle contraction causing body regions to - correct answer
-expand and move
Pseudocoelomates vs coelomates - correct answer -more control with greater muscle coverage
What are the other functions of body cavities? - correct answer -cushions organs and
growth/movement of internal organs is independent of body wall
Segmentation - correct answer -division of body into segments
, Each segment of the body can move - correct answer -independently
Segments that project from the body are called what and do what? - correct answer -
appendages; specialized functions such as feeding, defense, reproduction, and movement
Nervous systems of animals - correct answer --coordinate movements
-allow sensory processing
-complexity of behaviors
Circulation - correct answer -animals must exchange materials and energy with surroundings
- oxygen, nutrients, metabolic wastes such as carbon dioxide
More complicated body plans require circulatory - correct answer -systems specialized for
transport and exchange of these materials
Two parts of digestion? - correct answer -intracellular and extracellular
Intracellular digestion - correct answer -digestion occurs within vacuoles inside the cell
extracellular digestion - correct answer -Digestion takes place outside of the cell membranes
Most animals have what type of digestion? - correct answer -a combination of both
What are the specialized cells in sponges? - correct answer -choanocytes
QUESTIONS & ANSWERS WITH DETAILED RATIONALES |
INSTANT PDF DOWNLOAD
Porifera are also known as - correct answer -sponges
We used to group animals by what before we grouped them molecularly? - correct answer -
Though body plans
How do variations in body plan affect movement and interactions with the environment? -
correct answer -Radial symmetry - sessile; slow-moving; move equally well in all directions
Bilateral - cephalization; directed movement; improvement in capture of prey and escape of
capture
Symmetry - correct answer -Radial and bilateral
Body cavities of many animals function as - correct answer -hydrostatic skeletons
Fluid within the cavity shifts during muscle contraction causing body regions to - correct answer
-expand and move
Pseudocoelomates vs coelomates - correct answer -more control with greater muscle coverage
What are the other functions of body cavities? - correct answer -cushions organs and
growth/movement of internal organs is independent of body wall
Segmentation - correct answer -division of body into segments
, Each segment of the body can move - correct answer -independently
Segments that project from the body are called what and do what? - correct answer -
appendages; specialized functions such as feeding, defense, reproduction, and movement
Nervous systems of animals - correct answer --coordinate movements
-allow sensory processing
-complexity of behaviors
Circulation - correct answer -animals must exchange materials and energy with surroundings
- oxygen, nutrients, metabolic wastes such as carbon dioxide
More complicated body plans require circulatory - correct answer -systems specialized for
transport and exchange of these materials
Two parts of digestion? - correct answer -intracellular and extracellular
Intracellular digestion - correct answer -digestion occurs within vacuoles inside the cell
extracellular digestion - correct answer -Digestion takes place outside of the cell membranes
Most animals have what type of digestion? - correct answer -a combination of both
What are the specialized cells in sponges? - correct answer -choanocytes
