Exam 3 review Flashcards
Which of the following could qualify as a top-down control on a grassland community?
a. Limitation of plant biomass by rainfall amount
b. Influence of temperature on competition among plants
c. Influence of soil nutrients on the abundance of grasses versus wildflowers
d. Effects of grazing intensity by bison on plant species diversity
e. Effect of humidity on plant growth rates
Effects of grazing intensity by bison on plant species diversity
Which of the following is true about chordates at some point in their development?
a. They have a post-anal tail
b. They have a dorsal hollow nerve cord
c. They have a notochord
d. They have pharyngeal slits/pouches
They have a post-anal tail, They have a dorsal hollow nerve cord, They have a notochord , They have pharyngeal slits/pouches
Choose all that apply for Annelida:
True Coelom, Bilateral Symmetry, Segmentation, Protostome, Triploblast, Earthworms and other segmented worms
An organism characterized as being a mushroom, but also part of the group that includes rusts and shelf varieties
Basidiamycota
Organisms such as morels and truffles are in this group
Ascomycota
Bread mold and fruit rotting in your fridge is most likely caused by this group
Zygomycota
Many plants form associations with members of this strictly mycorrhizal fungal group
Glomeromycota
Can form mycorrhizal associations, can be part of lichen, and includes unicellular fungal organism, for example, yeast
Ascomycota
About 70% of all fungi belong to this group, which can cause disease, have diverse habitats, and form spores in sacs
Ascomycota
Found commonly in freshwater environments, have enzymes that digest cellulose, and have a flagellated state called a zoospore
Chytridiomycota
Which of the following has the greatest effect on the rate of chemical cycling in an ecosystem?
a. The ecosystem’s rate of primary production
b. The production efficiency of the ecosystem’s consumers
c. The rate of decomposition in the ecosystem
d. The trophic efficiency of the ecosystem
e. The location of the nutrient reservoirs in the ecosystem
The rate of decomposition in the ecosystem
Choose all that apply for Platyhelminthes:
Aceolamate, Bilateral Symmetry, Protostome, Triploblast, Planaria, tapeworm and other flatworms
A taxonomic group which contains the common ancestor and all of its descendants is known as:
Monophyletic
Choose all that apply for Chordata:
True Coelom, Bilateral Symmetry, Segmentation, Deuterostome, Triploblast, Amphibians, fish, reptiles, birds, and mammals, lancelets, tunicates
Which characteristic limits size of plants?
Lack of vascular tissues
The tangled mass of branched filaments that typically forms the fungal body below the ground is called _______________________ and is made of many _______________________.
Mycelium; hyphae
_________________ are organisms that have extra-embryonic membranes, whereas ____________________ are organisms that lay their eggs in water and so lack extra-embryonic membranes, but have yolk.
Amniotes; non-amniotes
The naked mole rat can regulate its temperature internally, so it is a(n) _____________________________, but it also fluctuates its body temperature according to its burrow, so it may also be classified as a(n) ____________________
Endotherm; heterotherm
Many plants can associate with a type of fungus called, ______________________, which increases surface area for nutrient and water absorption. Fungi of this type are found in most fungal phyla.
Mycorrhizae
Which marine ecosystem has the highest net primary production?
Algal beds and coral reefs/or kelp forests and coral reefs
Which ecosystem accounts for the highest percentage of the Earth’s net primary production despite its own low average net primary production?
Oceans