In angiosperms, are sperm and eggs produced by mitosis or meiosis?
Which cells are spores?
Which structures are gametophytes?

When does the apical–basal axis first become apparent?

a. When the epidermal, ground, and vascular tissues form

b. When the cotyledons, hypocotyl, and root form

c. When the first cell division produces the apical cell and basal cell

d. During the globular stage, when the suspensor is complete

Why is the emergence of the radicle an important first step in germination?

a. Its hook helps protect the shoot that emerges later.

b. It carries out photosynthesis to supply the embryo with food.

c. It is important for establishing a supply of water to the growing embryo.

d. It is necessary to break the seed coat.

Evaluate these statements about double fertilization. Select True or False for each sentence.

T/FTwo zygotes are formed, but only one survives.

T/FOne sperm fuses with an egg while the other sperm fuses with polar nuclei.

T/FIt results in the formation of a diploid embryo and triploid endosperm.

T/FBoth sperm involved in double fertilization form within the same pollen tube.

Which of the following does not occur during embryogenesis?

a. Formation of the radial axis

b. Production of the suspensor

c. Formation of the cotyledons and hypocotyl

d. Formation of the leaf lateral and proximal–distal axes