Fern leaves emerge as tightly coiled structures called:
A. microsporangia.
B. fiddleheads.
C. protonema.
D. horsetails.
E. prothallus.
B
Biology & Microbiology
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Axons of olfactory receptors extend from the nose to the:
a. mouth b. underlying connective tissue c. spinal cord d. brain e. ganglia
Biology & Microbiology
The letter “A” in the above figure is
a. the epidermis. b. the sweat gland. c. the dermis. d. the hypodermis. e. none of the above.
Biology & Microbiology
What is the purpose of the cartilage rings in the trachea?
A) to prevent food from passing into the trachea B) to assist with contracting the trachea C) to produce mucus to trap debris D) to keep the trachea open
Biology & Microbiology
V Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology