The seed coat is formed by the hardening of the
A) ovule.
B) integument.
C) endosperm.
D) embryo.
E) prothallus.
Correct Answer:
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Q20: A botanist examines two plants.Plant A has
Q21: Pollen tubes
A)transport pollen to the stigma.
B)facilitate the
Q22: All gymnosperms have needle-like leaves and produce
Q23: In seed plants the entire male gametophyte
Q24: Why is external water not essential for
Q26: Due to their pinnately compound leaves,tropical habitat,and
Q27: Why can corn seeds germinate in total
Q28: Old pine stumps are dug up,split into
Q29: Why aren't ferns commonly found in deserts?
A)Fern
Q30: Why are conifers and cycads considered gymnosperms?
A)They
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