In angiosperms, the endosperm functions in
A.
Pollen formation
B.
Fruit formation
C.
Seed coat formation
D.
Nourishment of the embryo
E.
Direction of the growth of the pollen tube
2.
Which of the following features of angiosperms has probably contributed most to their evolutionary success relative to all other land plant groups?
A.
Phloem
B.
Cutinized aerial surfaces
C.
Flowers and fruits
D.
True leaves and roots
E.
Xylem
3.
Only female gametes are produced in which of the following structures?
A.
Antheridia
B.
Stamens
C.
Protonemata
D.
Flowers
E.
Archegonia
4.
Which of the following statements about xylem and phloem is correct?
A.
Both are produce as secondary growth by vascular cambium.
B.
Both have companion cells.
C.
Both are found in bryophytes.
D.
Both conduct glucose in the plant.
E.
Both actively move fluids up and down stems.
5.
Which of the following factors is most important in the movement of water up a tall tree?
A.
Guttation
B.
Capillarity in the phloem
C.
Air pressure
D.
Leaf transpiration
E.
Active transport in the xylem
