The pollen grain is:
A. the male gametophyte.
B. the female gametophyte.
C. the male sporophyte.
D. the female sporophyte.
A
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Which of the following statements about flowering plants is TRUE?
A. A short-day plant requires nights longer than a certain critical period to trigger flowering. B. A long-day plant requires nights shorter than a certain critical period to inhibit flowering. C. A short-day plant requires daylight of short wavelengths. D. A long-day plant requires long wavelengths during the night. E. A long-day plant requires long days alternating with short days.
What is a difference between Chlamydomonas and Ulva?
a. Only Ulva produce flagellated gametes. b. Only Ulva contains carotenoids. c. Only Ulva grows by mitosis after fertilization. d. Only Ulva contains chlorophyll.
A splinter that penetrates to the third layer of epidermis of the palm of the hand is lodged in which layer?
A) stratum basale
B) stratum corneum
C) stratum granulosum
D) stratum lucidum
E) stratum spinosum
What would be the likely effect of drinking three alcoholic beverages?
A. Decreased urination due to alcohol activating aldosterone production B. Increased urination due to alcohol inhibiting aldosterone production C. Increased urination due to alcohol inhibiting antidiuretic hormone production D. Decreased urination due to alcohol inhibiting antidiuretic hormone production E. Increased urination due to alcohol activating antidiuretic hormone production