In plants,double fertilization means that
A) the zygote has twice the diploid number of chromosomes.
B) two pollen grains are needed to fertilize an egg.
C) one sperm fertilizes two eggs.
D) one sperm fertilizes an egg;another sperm fertilizes another cell in the embryo sac.
Correct Answer:
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Q23: Anthers are typically attached to filaments and
Q24: Pollen grains develop from
A) haploid male spores.
B)
Q25: Why are the structures indicated by the
Q26: Horticulturists often remove the anthers from flowers.This
Q27: Which of the following would be the
Q29: Which of the labeled structures in the
Q30: During pollination,pollen is moved from
A) stigmas to
Q31: What part(s)of the embryo sac shown in
Q32: What is the purpose for the endosperm
Q33: The central cell of the embryo sac
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