Organisms in an ecosystem are linked to their physical environment through the cycling of _______ and the transfer of _________
A. energy; nutrients
B. sunlight; water
C. nutrients; energy
D. water, sunlight
E. nutrients; water
C
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Homologous chromosomes pair with each other during meiosis, but are misaligned. What is the likely outcome if crossing over occurs?
A. One daughter chromosome contains a gene duplication, the other three are normal. B. One daughter chromosome contains a gene deletion, the other three are normal. C. Two daughter chromosomes contain a gene duplication, the other two are normal. D. Two daughter chromosomes contain a gene deletion, the other two are normal. E. One daughter chromosome contains a gene duplication, one contains a gene deletion, and the remaining two are normal.
If you were to penetrate through the epidermal layer of a root, you would next encounter the ____
a. xylem b. endodermis c. cortex d. phloem e. pith
The ascomycetes are named for their characteristic reproductive structure called a(n) ________.
A. ascocarp B. hypha C. thallus D. ascus
If you discovered a new colonial organism living deep on the sea floor, how could you determine whether it reproduced sexually or asexually? (Check all that apply)
A. Compare DNA to see if nearby individuals are identical. B. Compare morphology to see if nearby individuals are identical. C. Look for a coelom. D. Look for gonads with meiotic figures and gametes. E. Look for external buds still attached to the parent. F. Look for gonads with mitotic figures and embryos.