Fern leaves can be large, with their photosynthetic surfaces divided into smaller units called:
A. pinnae.
B. fronds.
C. stems.
D. leaflets.
E. thalli.
A
You might also like to view...
If an investigator removes the mesoderm from an
embryo, the development of which of the following systems is least likely to be affected? a. circulatory system b. muscle system c. reproductive system d. integumentary system e. excretory system
During voice production, air rushing through which structure causes the vocal cords to vibrate?
a. larynx b. pharynx c. glottis d. epiglottis e. bronchus
Which of the following contains the most nutrients?
A) dryfall B) wetfall in an open prairie C) wetfall on a forest floor D) wetfall in the ocean
Saltatory conduction:a
does not involve voltage-activated potassium ion channels. b. can occur in both myelinated and unmyelinated neurons. c. is slightly slower than continuous conduction. d. is more energy efficient than continuous conduction. e. allows nerve impulses to jump from Schwann cell to Schwann cell