gnetophytes मीनिंग इन हिंदी

उदाहरण वाक्य

1. However, many other lines of evidence show that gnetophytes are not related to angiosperms.
2. The article on xylem lists five clades with more or less true wood, cycads, ginkoes, gnetophytes, conifers, and angiosperms.
3. Thus Zhong et al . ( 2011 ) say that heterotachy is one of the reasons for variability in reconstructions of the origin of gnetophytes.
4. Because of this, gnetophytes were once thought to be the closest gymnosperm relatives to flowering plants, but more recent molecular studies have largely disproven this hypothesis.
5. The division Pinophyta may be used for all gymnosperms ( i . e . including cycads, ginkgos and gnetophytes ), or for conifers alone as below.
6. Detailed morphological and molecular studies have shown that the group is not actually monophyletic, with proposed floral homologies of the gnetophytes and the angiosperms having evolved in parallel.
7. The primary difference between gnetophytes and other gymnosperms is the presence of vessel elements, a system of conduits that transport water within the plant, similar to those found in flowering plants.
8. Cycads and " Ginkgo " have motile sperm that swim directly to the egg inside the ovule, whereas conifers and gnetophytes have sperm that are unable to swim but are conveyed to the egg along a pollen tube.
9. Recent research by Lee EK, Cibrian-Jaramillo A, " et al . " ( 2011 ) suggests that the Gnetophyta are a sister group to the rest of the gymnosperms, contradicting the anthophyte hypothesis, which held that gnetophytes were sister to the flowering plants.