Which of the following statements describes the differences between pollination and fertilization?
A. Pollination is the transport of pollen from a microsporangium to a stigma whereas fertilization is the fusion of a sperm with an egg.
B. Pollination is the production of pollen whereas fertilization is the fusion of a sperm with an egg.
C. Pollination is the transport of pollen from a microsporangium to an ovule whereas fertilization is the fusion of the pollen with an ovule.
D. There is no difference; the two terms are synonymous.
E. All of the other choices provided are incorrect.
A. Pollination is the transport of pollen from a microsporangium to a stigma whereas fertilization is the fusion of a sperm with an egg.
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We maintain a fairly constant body temperature despite exposures to different seasons or external temperatures. This is achieved through our capacity to
A. adapt to changing environments. B. regulate body temperature. C. maintain homeostasis. D. All of these choices are correct. E. None of these choices are correct.
Of all the different codons that exist, three of them do not encode a particular amino acid. Their role is to:
a. allow for any amino acid to be added in their place. b. encode tRNA molecules. c. provide instructions on the tertiary structure of the protein. d. signal the start of translation. e. provide instructions to stop translation.
The advantage of light microscopy over electron microscopy is that _____
A) light microscopy provides for higher magnification than electron microscopy B) light microscopy provides for higher resolving power than electron microscopy C) light microscopy allows one to view dynamic processes in living cells D) light microscopy provides higher contrast than electron microscopy
On the back of your skull you can feel a small bump, below which is an opening where the spinal cord enters the skull. The location of this opening toward the bottom of the skull is significant in evolutionary biology for what reason?
A) It allowed for the hominin brain to grow much larger than other primates. B) It provided greater protection for the spinal cord. C) It occurred as a result of the change to a bipedal stance. D) This change was necessary for the increase in size from prosimian forms to anthropoid forms.