Which of the following traits are expected to be best communicated via costly signals?
a. the willingness for reciprocal grooming
b. the ability to fight for a resource
c. the ability to collect nesting material
d. the level of infection with internal parasites
D
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Before leaving on a trip, you give your favorite houseplant a little extra water and a pinch of plant food. Your trip ends up lasting a few days longer than you originally planned, and when you return, you discover that your plant has wilted dramatically. What happened?
a. The extra water caused its cells to swell, bursting its plasma membranes. b. Overwatering your plant deprived it of the electrolytes that plants crave. c. Your plant dried out before you returned, and it suffered from plasmolysis. d. The plant food inverted the concentration gradient in the plant, dehydrating it.
The organisms shown here are examples of _____
1.fruiting bodies of club fungi
2.diploid ascospores resulting from mitosis
3.branching haploid mycelium
4.a multicelled body consisting of fungus and an alga or bacterium
Which feature is shared by euglenoids and kinetoplastids?
a. an eyespot b. flagellated c. photoautotrophy d. parasitic existence e. marine and freshwater habitats
Naked DNA does not exist in nature of parallel actin filaments
a. true b. false