In seed plants, the ______ is called the nucellus.
A) young sporophyte
B) megagametophyte
C) megaspore
D) megasporangium
E) embryo
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Q9: A micropyle is a(n):
A)nutritive structure of the
Q10: In which of the following groups is
Q11: The fossil record indicates that the integument
Q12: Polyembryony is common in gymnosperms because a(n):
A)seed
Q13: Just before fertilization, a gymnosperm ovule contains:
A)an
Q15: In gymnosperms, pollination occurs usually by:
A)insects.
B)water.
C)wind.
D)birds.
E)mammals.
Q16: The progymnosperms had characteristics intermediate between those
Q17: With the evolution of the ovule, the
Q18: Which of the following is NOT a
Q19: Which of the following statements about conifers
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