Mar 18, 2014 - Seaweed Seaweed has had to adapt a lot because it lives under water or very close to water. To reproduce they release seeds into the water synchronously in reaction to light, temperature,or tides to increase the fertilization rate. Also, to prevent beâ¦ Photosynthesis takes place primarily in the blades and it is, therefore, important that the stipe is long enough to place them sufficiently close to the surface of the water â¦ They create a gelatinous polycarride that helps to retain water. Seaweed. However there are several types of plants that live in water such as lichens, sponges, and red/brown/green algae. (Seaweed) has had to adapt a lot because it lives under water or very close to water. Aquatic algae demonstrates photosensitive and cosmetic adaptation throughout the ocean. Along the northeast coast of the US, there is a toxic phytoplankton species, Alexandrium fundyense, which produces very toxic blooms. A weak _____ is an adaptation of a water lily, allowing it to focus on the expansion of its leaf. Natural selection over many generations results in helpful traits becoming more common in a population. They create a gelatinous polycarride that help to retain water. If algae originated from a single strain, environmental evolutions have forced the adaptation into red, brown, yellow and green colour algae which each blend in with their environmental surroundings. It is not a quick process! The seaweed can have one or more blades, and the blades can have different shapes. Seaweed can only live in sea water and it needs enough sunlight reaching them so they can carry on the process of photosynthesis. Kolkwitz listed 61 diatoms, 42 green algae, 41 pigmented flagellates, 23 blue-green algae, and 5 red algae as organisms of oligosaprobic and /or unpolluted zones and Lackey found 77 species of planktonic algae in the clean water portion of a small stream, 40 of which were absent in the polluted area[15,16]. Like plants on earth use carbon dioxide and sunlight to produce oxygen for human beings to survive, seaweed use carbon dioxide in water and sunlight to produce carbohydrates for the marine life to survive. Two experimental feeding trials were conducted during four weeks to evaluate the use of Ulva lactuca in shrimp culture: (1) for wastewater bioremediation, and (2) using different inclusion levels of U. lactuca meal in shrimp feed. Adaptation is an evolutionary process whereby an organism becomes increasingly well suited to living in a particular habitat. In some cases, the blades have a distinct midrib. Seaweed (or macroalgae) are a diverse group of mostly photosynthetic algae found in marine and freshwater environments. Copepods, small crustaceans and the most abundant animals in the world, are main consumers of toxic algae. To reproduce they release seeds into the water synchronously in reaction to light, temperature, or tides to increase the fertilization rate. Environmental Adaptation. Seaweed does not have roots like terrestrial plants and trees because they do not need to absorb water and nutrition from the soil. As they heavily depend on water, it becomes a limiting factor for their survival. The term seaweed is loosely used to refer to all marine plants. Adaptation to Shallows (subtidal to 30 meters) Less wave Action They are eukaryotic organisms and lack any vascular tissue (for the transport of water and other compounds such as sugars) or any organised tissue. Heavy wave action; Small, tough stipes and blades; Strong holdfasts; Hydrodynamic shapes; Low surface to volume ratio; Dessication; Low surface to volume ratio; Trap water. This occurs because individuals with these traits are better adapted to the environment and therefore more likely to survive and breed. Seaweed Adaptations : Adaptation to Intertidal Zone. The _____ of this plant attracts pollinators, such as bees. In other words, the predators may adapt and would be able to eat lots of toxic prey without being poisoned.