Gut symbionts are lost after each molting a termite undergoes
Indicate whether the statement is true or false.
Answer: TRUE
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Sperm
(a) are male gametes. (b) are female gametes. (c) contain yolk. (d) are produced in the ovaries.
Many male songbirds are brightly colored. However, the color of the birds is usually determined by a balance of
A. sexual selection that reduces bright colors and natural selection in favor of bright colors. B. natural selection against bright colors due to predation and mutations that introduce bright colors. C. mutations that reduce bright colors and gene flow in favor of bright colors. D. natural selection against bright colors due to predation and sexual selection in favor of bright colors. E. mutations that reduce bright colors and sexual selection in favor of bright colors.
Which algal group contains individuals that are typically unicellular and form siliceous shells?
a. diatoms b. red algae c. brown algae d. green algae e. dinoflagellates
Some predators feed primarily on the most abundant prey. This is an example of ________ predation
A) density-independent B) cyclical C) exponential D) competitive E) density-dependent