How does systemin cause the activation of the wound response in tomato plants?
A. It binds directly to jasmonic acid.
B. It directly signals gene expression.
C. It induces the production of tannins.
D. It induces a jasmonic acid signaling pathway in certain cells.
E. It triggers genes that are able to signal the plant that mechanical injury has occurred.
D. It induces a jasmonic acid signaling pathway in certain cells.
Systemin activates jasmonic acid which in turn activates a defense response.
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A gland that produces alkaline secretions that function to activate sperm and reduce the acidity of the female reproductive system. _____
A) Endometrium
B) Testis
C) Cervix
D) Uterus
E) Oviduct
F) Ovaries
G) Vagina
H) Seminal vesicle
I) Penis
J) Prostate gland
K) Vas deferens
L) Glans penis
Insectivorous plants such as the Venus flytrap, pitcher plant, and bladderworts often grow in
A. alkaline soil. B. sandy soil. C. clay soil. D. marshes. E. acidic soils.
Topsoil is richest in
a. minerals b. sand. c. clay. d. organic matter e. none of these
Answer the following questions in reference to the five eye structures listed below.
A. This structure forms the transparent front of the eye. B. This structure primarily acts to focus light waves. C. Cephalopods use this structure to produce a sharply defined, detailed image. D. This structure is found in the compound eyes of insects but not in the eyes of vertebrates. E. This structure acts to maintain the shape of the eye and to transmit light to other structures.