Pteridophytes and spermatophytes Flashcards
First evolved plant swith vascular tissues?
Pteridophyta
The plant body of pteridophyte is what?
Sporophyte
Majority of pteridophytes are what?
Homosporous
What is the dominant life cycle in pteridophytes (seedless vascular plants)
Diploid sporophyte
What is the dominant life cycle in bryophytes
Haploid gametophyte
What are the sex organs of pteridophyt3s and where are they produced?
Antheridia(male sex organ) and archegonia(female sex organ)
They are produced on the prothallus
The protallus is a what in the pteridophytes
A free-living,photosynthetic haploid gametophyte
The dominant life cycle in ferns(pteropsida), sporophy5es contain fronds. what are they and what is their role?
They are large compound leaves that perform double function. They are photosynthetic organs and carry the reproductive structure
What’s sorts and sporangia
A sorus is a cluster of sporangia . Sporangias are structures producing and containing spor3s
What differentiates gymnosperms from angiosperms?
The ovule Is not enclosed by any ovary wall before and after fertilisation.
The plant body of a Gymnosperm is a what
Sporophyte
