In a dicot stem, what is the ring of cells that includes the xylem?
A) apical meristem
B) vascular cambium
C) cork cambium
D) epidermal tissue
B
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The plant hormone that prevents seed germination even if conditions of temperature and moisture conditions are appropriate would be:
A. auxins B. gibberellins C. ethylene D. abscisic acid E. brassinosteroids
The cuticle is derived from ________
a. cell divisions of parenchyma cells b. secretions of mesophyll cells c. secretions of epidermal cells d. cell divisions of apical meristem
Given the following, select the correct sequence of events involved in regulating fluid balance
1. adrenal cortex secretes more glucocorticoids 2. anterior pituitary secretes more ACTH 3. hypothalamus secretes ACTH 4. plasma levels of glucocorticoids increase 5. anterior pituitary secretes less ACTH
a. 1, 2, 4, 5 b. 2, 1, 4, 5 c. 3, 1, 4, 5 d. 3, 4, 1, 2 e. 2, 4, 5, 1
RNAs form by _____; proteins form by _____
a. replication; translation b. translation; transcription c. transcription; translation d. replication; transcription