Question

1. angiosperm life cycle

biobuddy socrative question

• what is a major difference between the megagametophytes of gymnosperms and angiosperms?

a - gymnosperm megagametophytes are encased within ovules
b - angiosperm megagametophytes are encased within ovules
c - archegonia are still recognizable in gymnosperm megagametophytes
d - archegonia are still recognizable in angiosperm megagametophytes

Explanation:

In gymnosperms, the megagametophyte has archegonia which are recognizable. In angiosperms, the female gametophyte (equivalent to megagametophyte) is highly reduced and archegonia are not recognizable. Gymnosperm megagametophytes are not encased within ovules in the way option A suggests (ovules have megagametophytes inside but the key difference here is about archegonia). Angiosperm megagametophytes (embryo sacs) do not have recognizable archegonia.

Answer:

C. Archegonia are still recognizable in gymnosperm megagametophytes