1. Directions: Arrange the steps that refer to the different modes of moss and ferns reproduction
Write 1-5 on the blank for moss plant and 6 10 for fern plant.
Moss Plant
Spore case opens.
Fertilization takes place.
Sperms swim to egg cell
Spore grows into a moss plant.
Fertilized egg cell grows into a ball of spore
Fern Plant
Spore cases open
New plant part grows into fern.
Fertilized egg cell grows into new plant part.
Spore begins to grow into young fern plant.
Sperm swim to egg cells of young fern plant
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Answers & Comments
Answer:
Moss Plant
1.Fertilized egg cell grows into a ball of spore.
2.Spore case opens.
3.Fertillization takes place.
4.Sperms swim to egg cell
5.Spore grows into a moss plant.
Explanation:
The life cycle of most mosses begins with the release of spores from a capsule, which opens when a small, lidlike structure, called the operculum, degenerates. A single spore germinates to form a branched, filamentous protonema, from which a leafy gametophyte develops. The gametophyte bears organs for sexual reproduction. Sperm, which are released by the mature antheridium (the male reproductive organ), are attracted into the neck of an archegonium (the female reproductive organ). Here, one sperm fuses with the egg to produce the zygote. After cell division, the zygote becomes the sporophyte, and, at the same time, the archegonium divides to form the protective calyptra. The sporophyte usually consists of a capsule and a seta. Asexual reproduction occurs within the capsule and the whole process may begin again.
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