Which of the following statements concerning pollen grain apertures is FALSE?
A) They are located in the intine.
B) They are preferential sites for pollen tube initiation.
C) They are sites of uptake of various substances.
D) They can expand and contract.
E) They help protect the pollen grain from drying out.
Correct Answer:
Verified
Q35: _ mark the pathways of sperm cell
Q36: The mature megagametophyte consists of _ nuclei
Q37: Sporopollenin is the primary constituent of the:
A)integument.
B)nucellar
Q38: The mature female gametophyte is called a(n):
A)embryo
Q39: In embryo sac development, the egg apparatus
Q41: The first flowering plants had a Polygonum
Q42: As the seed develops, the ovary wall
Q43: The integuments envelope the nucellus except at
Q44: Myco-heterotrophs have an obligate relationship with a
Q45: Radially symmetrical flowers are said to be
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