Nearsightedness is caused by
a. eye structure that focuses an image in front
of the retina.
b. uneven curvature of the cornea.
c. uneven curvature of the lens.
d. eye structure that focuses an image
posterior to the retina.
e. all of these.
A
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Source of cells that differentiate into primary vascular tissues.
Choose the letter of the best match: A. protoderm B. vascular cambium C. apical meristem D. procambium E. ground meristem
In a certain plant, when individuals with blue flowers are crossed with individuals with blue flowers, only blue flowers are produced. Plants with red flowers crossed with plants with red flowers sometimes produce only red flowers, although
other times they produce either red or blue flowers. When plants with red flowers are crossed with plants with blue flowers, sometimes only red flowers are produced; other times either red or blue flowers are produced. Which gene is dominant? What will be an ideal response?
Trace the path of a chef's salad with croutons down the digestive tract, and explain what takes place in
each specialized region. What will be an ideal response?
Which of the following statements about the functions of a plant cell central vacuole is false?
A) The central vacuole of a plant cell may help increase the size of cells by absorbing water. B) The central vacuole of a plant cell may store waste products. C) The central vacuole of a plant cell may digest chemicals for recycling. D) The central vacuole of a plant cell may store poisons.