lagenostome वाक्य

उदाहरण वाक्य

1. Nevertheless, most lyginopteridalean ovules retained a lagenostome, despite its function in pollen capture having been replaced by the micropyle.
2. These earliest ovules had the apical part of the nucellus exposed, from which there was a projection known as a lagenostome ( sometimes also called a salpinx ) that facilitated capture of the pollen and directed it down to the pollen chamber above the megagametophyte.
3. There are nevertheless many other characters that suggest that the Callistophytales may have been derived from a more primitive lyginopterdalean-like ancestor, including the presence of a lagenostome at the apex of the nucellus, the general structure of the pollen organs, and the overall morphology of the vegetative structures.