In the vascular bundles of most dicot stems, primary phloem differentiates toward the ________of the stem, while primary xylem differentiates toward the ________of the stem.
A. middle; outside
B. cork cambium; vascular cambium
C. outside; middle
D. shoot tip; roots
E. middle; middle
C. outside; middle
In eudicots, the primary vascular tissues are arranged in a ring towards the periphery of the stem. The xylem develops on the inside of this ring while the phloem develops towards the outside of the ring.
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Tissues that are metabolically active and utilize large amounts of energy would be rich in
A. ribosomes. B. lysosomes. C. smooth endoplasmic reticulum. D. mitochondria. E. contractile vacuoles.
In what portion of the plant does photosynthesis takes place?
A. mesophyll B. chloroplast C. thylakoid membrane D. grana E. All of the choices are correct.
Which high energy light wave length can penetrate sea water the deepest?
a. Blue b. Green c. Violet d. Red e. a, b, and c above
Which would be characterized by little rainfall, permafrost, and reindeer?
Select one: a. grasslands b. temperate deciduous forest c. desert d. taiga e. tundra