Which of the following most directly gives rise to primary vascular tissues?
a. protoderm
b. apical meristem
c. ground meristem
d. vascular cambium
e. procambium
E
Biology & Microbiology
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Which of the following is a function of the secondary lymphatic system organs?
a) transport of lymph b) clonal selection of B cells c) located where lymphocytes encounter antigens d) all of the choices are correct
Biology & Microbiology
Melanocytes ultimately arise from
A. the ectoderm. B. the neural tube. C. the notochord. D. the mesoderm. E. the endoderm.
Biology & Microbiology
The space between the two membranes of the mitochondrion accumulates ____.
A. proteins B. H+ C. carbohydrates D. H2O2 E. CO2
Biology & Microbiology
Mature plants may become ________ in dry or cold seasons in order to survive long periods that are unfavorable for growth.
A. gravitropic B. dehydrated C. dormant D. thigmonastic E. photoperiodic
Biology & Microbiology