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WorksheetsEcology review week 4
Total questions: 13
Worksheet time: 44mins
According to the principle of Anisogamy, ______ produce larger, more costly gametes and ________ produce smaller, less costly gametes
male, female
female, male
Male crickets pass on both spermatheca and a spermatophylax to their mates. The spermatophylax is a nutrient dense droplet that female crickets can consume as they wait on the spermatheca to absorb. So from this mating, females get sperm AND nutrients (like Nitrogen) that they later incorporate into their tissues. This is an example of...
Mating with no benefits
Mating with direct benefits to females
Mating with indirect benefits to females
A cohort is a group of individuals in a population born during a specific time period. Since no new individuals can be added to that group, a cohort can only shrink as individuals die and can never grow.
True
False
Male-long tailed widowbirds maintain their long tail based on...
Male-male competition or intra-sexual selection
Female choice or inter-sexual selection
A large river will have a _______ number order. Near the mouth of a large river (where the river meets a larger body of water), most energy is provided by ____________ sources.
Higher, allochthonous
Lower, autochthonous
Higher, autochthonous
Lower, allochthonous
Warm water is more dense than cool water and therefore warm water sinks.
True
False
Most biodiversity is found in...
nearshore ecosystems
the open ocean
Which of these (more than 1) are found at lower latitudes, closer to the equator?
Salt marshes
Mangroves
Kelp forests
Coral reefs
In the image, zone A is the neritic zone and zone B is the aphotic zone
True
False, zone B is the photic zone
False, zone A is the benthic zone
False, zone A is the thermocline
You should calculate 1) the proportion surviving to each x, 2) the proportion dying between age classes, and 3) the probability of an individual surviving to a certain age class and achieving the observed reproductive output.
Copy the following life table onto a scrap piece of paper and fill in the blanks as described above.
What is the Ro (net reproductive rate) for this population?
(a)
If the Ro (net reproductive rate) for a population is 1.25, that population is...
decreasing
increasing
stable
Your TA Claire works with fall webworm as a study system. Fall webworm are caterpillars when Claire works with them in the lab, but later they pupate and become fuzzy, white moths. These moths lay between 300 and 800 eggs in an egg cluster and do not care for their young. What type of survivorship curve do fall webworm likely have?
Type 1
Type 2
Type 3
Survivorship curves ______ vary among populations of the same species.
can
cannot
