In pine trees, megaspores develop within a(n) ____.
A) sporopollenin
B) ovule
C) seed
D) pollen tube
E) pollen grain
Correct Answer:
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Q17: In living seed plants, a megasporangium and
Q18: An embryo sporophyte surrounded by nutritive tissue
Q19: Which group of plants has the smallest
Q20: In seed plants, meiosis produces _ megaspores,
Q21: The _ are the only land plants
Q23: The cycad lineage probably arose from _.
A)
Q24: The _ phylum contains one living vascular,
Q25: In the pine life cycle, microspores are
Q26: About 80% of all living gymnosperm species
Q27: In pines, the mature male gametophyte is
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