A gemma is a(n) sexual reproductive structure produced by certain liverworts

____________________ Indicate whether the statement is true or false.


False - asexual

Biology & Microbiology

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Which of the following will alter the frequency of alleles in the population the least?

A. Mutation B. Natural selection C. Genetic drift D. Migration E. All of the answers are equal

Biology & Microbiology

How does stomach acid assist the innate immune system?

a. The acid signals B cells to the site of infection. b. The acid signals T cells to the site of infection. c. The acid creates an inhospitable environment for pathogens to live. d. The acid breaks down the food sources, and the pathogen starves.

Biology & Microbiology

The film of fluid in the pleural cavity functions to:

a. nourish the lungs. b. rehydrate the lungs. c. provide lubrication between the lungs and thoracic wall. d. trap bacteria that may enter the lungs. e. inflate the lungs.

Biology & Microbiology

Where is the respiratory control center located?

A. in the lungs B. in the diaphragm C. in the brain D. in the bronchi E. in the aorta

Biology & Microbiology