Four of the five choices listed below are types of
ground tissue or are derived from it. Select the
exception.
a. sclereids
b. xylem
c. sclerenchyma
d. parenchyma
e. collenchyma
Answer: b
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In the field of plant transgenics, the use of the bacterium Agrobacterium tumefaciens has proven usefulbecause:a
it is not attacked by plant immune systems. b. it has been genetically engineered to penetrate the plant cell wall. c. it can directly modify the plant genome, causing it to make useful products for humans. d. it is found naturally in almost all species of plants. e. it is able to transfer a plasmid into host plant cells.
Which of the following tissues is dead at maturity?
a. parenchyma. b. sclerenchyma. c. collenchyma. d. epidermis. e. lignin
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
Bacteriophages replicate in
a. a yeast cell b. bacterial cells c. human cells d. a large virus