Which of the following is not one of the four main functions of the stem of a plant?
1.containing meristematic tissue that gives rise to new cells of the shoot
2.housing the vascular tissues
3.mechanical support
4.photosynthesis
4
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Lignin is to cellulose strands as __________ is to
epidermal cells. a. cuticulin b. epidermerin c. pectin d. cutin e. chitin
Of all the different codons that exist, three of them ____
a. are involved in mutations b. do not specify a particular amino acid c. cannot be copied d. determine amino acids, and in addition, also provide punctuation or instructions such as "stop" e. do not specify a particular amino acid, but do provide punctuation or instructions such as "stop"
In many dense forests, plants living near the ground level engage in intense competition for
A) oxygen. B) water. C) carbon dioxide. D) sunlight.