In flowering plants, the immature male gametophyte is the:a

anther.
b. pollen grain.
c. carpel.
d. style.
e. androecium.


B

Biology & Microbiology

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In Chapter 2, you learned about beneficial bacteria that live on our skin and lower the pH,

which in turn keeps other disease-causing bacteria in check. This relationship between beneficial bacteria and their human hosts is an example of __________.

a. coevolution b. adaptive radiation c. sexual selection d. mutation

Biology & Microbiology

Cholesterol ____

a. has a rigid backbone of four nitrogen rings b. is the most common steroid in animal tissue c. is a lipid with a fatty-acid component d. is needed to inhibit sexual development and maturity e. is needed to lubricate feathers

Biology & Microbiology

The range of phenotypic possibilities that can develop from a certain dog genotype under different

environmental conditions is called the:a. epistatic interaction. b. norm of reaction. c. nurture limit. d. genotype range. e. maximum phenotype

Biology & Microbiology

FSH stimulates interstitial cells in the testes to produce testosterone

Indicate whether the statement is true or false

Biology & Microbiology