Aquatic ancestory of Bryophyta is best indicated by
Aquatic ancestory of Bryophyta is best indicated by
The correct option is B Flagellated male gametes
Bryophytes, or "moss plants" (the phylum includes both mosses and liverworts), are the most primitive of the terrestrial plants and require a moist environment for their existence. They are smaller than tracheophytes and lack the true stems, leaves and roots, that are found in higher plants. Bryophytes are dependent upon the moisture in their surroundings for both reproduction and fluid transport. The flagellated male gametes of Bryophytes, like those of their aquatic ancestors, rely on water to help them move toward female gametes. Additionally, because they lack the efficient system of internal fluid transport found in tracheophytes, Bryophytes require environmental moisture to ensure that all parts of the plants remain nourished. The necessity of water for the act of fertilization; their amphibian nature and the presence of ciliated antherozoids are the supporting points which indicate their aquatic ancestory.
Bryophytes, or "moss plants" (the phylum includes both mosses and liverworts), are the most primitive of the terrestrial plants and require a moist environment for their existence. They are smaller than tracheophytes and lack the true stems, leaves and roots, that are found in higher plants. Bryophytes are dependent upon the moisture in their surroundings for both reproduction and fluid transport. The flagellated male gametes of Bryophytes, like those of their aquatic ancestors, rely on water to help them move toward female gametes. Additionally, because they lack the efficient system of internal fluid transport found in tracheophytes, Bryophytes require environmental moisture to ensure that all parts of the plants remain nourished. The necessity of water for the act of fertilization; their amphibian nature and the presence of ciliated antherozoids are the supporting points which indicate their aquatic ancestory.
