Which of the following statements about monocots is true?
a. They lack sclerenchyma tissue.
b. They have a well-developed vascular cambium.
c. They do not produce bark.
d. Their lateral meristems give rise to wood.
e. Secondary growth occurs rather slowly.
c
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The functional role of sporopollenin is primarily to _____
A) comprise spore surface structures that catch the wind and assist in spore dispersal B) reduce dehydration C) make spores less dense and able to disperse more readily D) repel toxic chemicals E) provide nutrients to spores
Vitiligo occurs when
a. too much melanin is produced. b. bacteria infects oil ducts. c. an individual is exposed to the herpes virus. d. melanocytes die forming white patches on the skin. e. an individual has an inner ear infection.
That carton of milk has been sitting in the refrigerator for several weeks, and everyone in your house has been complaining about it–it is full of bacteria! Predict what will happen to those bacteria as time goes on
What will be an ideal response?
Which of the following statements is consistent with the hypothesis that certain eukaryotic organelles originated as prokaryotic endosymbionts?
A) are roughly the same size as bacteria. B) can be cultured on agar since they make all their own proteins. C) contain circular DNA molecules. D) have ribosomes that are similar to those of bacteria. E) A, C, and D