A horizontal stem modified to penetrate the substrate and anchor a plant is a ____
a. sporangium
b. rhizome
c. vascular system
d. protonema
e. shoot system
ANSWER: b
You might also like to view...
What is the organelle shown in this illustration?
a. plant cell
b. thylakoid
c. chloroplast
d. vacuole
The hormone involved in childbirth that participates in a positive feedback loop is
1.estrogen. 2.progesterone. 3.somatostatin. 4.oxytocin. 5.vasopressin.
The central nervous system contains:a
all sympathetic nerves. b. all parasympathetic nerves. c. all sensory receptors. d. only the cerebrum and cerebellum. e. a brain and a dorsal tubular spinal cord
During the first half of the menstrual cycle, GnRH stimulates the release of FSH, which stimulates the growth of follicle cells to secrete increasing levels of ________, which then stimulates the release of more GnRH, creating a positive feedback
loop. Fill in the blank(s) with correct word