Conifers have been very successful members of the gymnosperms. What are some of the adaptations that have contributed to their success?
What will be an ideal response?
Conifers possess drought-resistant leaves, protective seed coats, gametophytes that have been reduced to a few cells, an advanced vascular system that produces wood for support, participation in mycorrhizal associations, and a long life span.
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At which time period(s) during PCR thermocycling is/are hottest in temperature?
A) during DNA denaturation B) during primer annealing C) during primer extension/elongation D) Both the first and last cycles are hotter in temperature than all other cycles.
Which of the following activities would be associated with the parasympathetic division of the autonomic nervous system?
A. resting and digesting B. release of both acetylcholine and epinephrine C. increased heart rate D. "fight-or-flight" response E. release of epinephrine only
The human parathyroid gland regulates which of the following in blood?
A. calcium B. glucose C. insulin D. glucocorticoid E. melatonin
Which of the following are most closely related to plants?
A) brown algae B) red algae C) slime molds D) green algae