Which of the following has a role in sediment consolidation similar to that of mangroves?

a. red algae.
b. seagrasses.
c. green algae.
d. rockweed.
e. giant kelp.


B

Biology & Microbiology

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Which type of plant hormone has been shown to both promote pollen tube elongation and inhibit root

elongation?

a. jasmonates b. ethylene c. brassinosteroids d. salicylic acid e. oligosaccharins

Biology & Microbiology

The anterior pituitary secretes more ACTH, leading to more glucocorticoids in plasma, which causes

the anterior pituitary to then secrete less ACTH. This is an example of what type of hormone control?

a. amplification b. positive feedback c. negative feedback d. cascading feedback e. both amplification and positive feedback

Biology & Microbiology

Physician Edward Jenner promoted the use of cowpox, a harmless pathogen related to the dangerous smallpox, as a vaccination to provide patients immunity from future smallpox epidemics. This is an example of

A. active immunity. B. passive immunity. C. an inflammatory response that decreased the IgE production and increased T cells. D. developing high levels of interferon although Jenner did not realize these diseases were viral. E. developing high levels of complement.

Biology & Microbiology

Lymph contains red blood cells

Indicate whether the statement is true or false

Biology & Microbiology