Which of the following is a male reproductive structure found in plants?
A. archegonia
B. pistil
C. pollen cone
D. megaspore
Answer: C
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The sporangia (asci) of ascomycetes each ultimately produces:
A. eight diploid spores B. four genetically identical haploid spores C. four haploid spores, each genetically different D. eight identical haploid spores E. eight haploid spores, of which there are two each of four different genetic types
Refer to Figure 44-3. Which structure would carry blood to the systemic (body) circulation?
a. 1 b. 2 c. 6 d. 7 e. 14
Which pathway is the foundation for the majority of ecosystems and food chains on Earth?
A) photosynthesis B) anaerobic respiration C) aerobic respiration D) chemosynthesis E) decomposition
_______________ is a common second messenger.
a. cMHC b. cAMP c. cRNA d. cGTP e. cATP