Which of the following statements about the epicotyl is true?
A. It forms immediately above the secondary roots of a seedling.
B. It remains in the ground after a seed has germinated.
C. It is the portion of the stem axis that is directly below the cotyledons.
D. It takes up most of the volume within a monocot or dicot seed.
E. The shoot apical meristem of a seedling is located just above it.
Answer: E
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Which animal taxon is named for the cuticle or external skeleton that its members secrete and
periodically molt?
a. Deuterostomia b. Ecdysozoa c. Reptilia d. Lophotrochozoa e. Protostomia
An interaction in which one species benefits and the
second species is neither harmed nor benefited is a. mutualism. b. parasitism. c. commensalism. d. competition. e. predation.
Which step of the citric acid cycle requires both NAD+ and ADP as reactants?
A) step 1
B) step 2
C) step 3
D) step 4
The processes of transcription and translation are collectively known as
A. gene duplication. B. RNA processing. C. protein synthesis. D. gene expression. E. DNA synthesis.