11 December 2012.“What is Red Algae?” Wise Geek.

Since they lack vascular tissue, red algae are rather small, most range from 2-10 inches tall.

11 December 2012.“Red Algae.” Plant Life.

Also in nonvascular plants, the dominant generation is the gamephyte because the sporophyte is smaller and doesn't live as long in nonvascular plants.
However, a unique aspect of alternation of generations in red algae reproduction provides a reproductive advantage for the plant.

11 December 2012.“Red Algae Revise Early Life History.” Science AAAS.

Through this third generation not seen in other nonvascular plants, the red algae achieves reproductive success despite some of its other limitations.

Alternation of Generations Ability to reproduce asexually and sexually Although most nonvascular plants reproduce mainly through sexual reproduction, the ability to also reproduce asexually gives red algae some advantages.

Even under harsh conditions, it is still able to absorb gases and nutrients from the water.
Over time, red algae has been able to live in different environments in water due to this adaptation to stress within aquatic habitats.

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This is an evolutionary advantage for Red Algae, because without a flat structure, the plant would’ve died out from living in such water conditions and being so far under the ocean’s surface level where sunlight is easily accessible.

11 December 2012."The Red Algae, Division Rhodophyta." Wet Web Media.

As an aquatic plant, Red Algae faces at times high water currency, but unlike other aquatic species that might’ve died off from this condition, Red Algae uses its flexibility to cope with this condition it’s been living in.

(Fun Fact: Phycoerythrin is what gives Red Algae its red color).

The adult stages, sporophyte and gametophyte, are thestages that resemble lettuce, and the leafy structure is called a thallus.Red Algae (Division- Rodophyta) :- Most of the known red algae species are small to medium-sized multicellular andlivein the ocean (marine) with approximately 6000 species.

Fossils of red algae have been found in rocks 500 million years old.

Freshwater algae, on the other hand, can sometimes obtain all of their required carbon dioxide by passive uptake. While a review of such literature is unnecessary in this article, I'll give one example. The freshwater chrysophyte alga, , has been shown to have none of the more sophisticated mechanisms for carbon dioxide uptake that are described later in this article, and it relies on simple passive uptake. For this reason it has been shown to photosynthesize most effectively where carbon dioxide concentrations are high, at pH 5-7.

A green pond covered with algae is unsightly and is an eye sore.

This makes it possible for red algae to carryout photosynthesis in comparatively deep waters, because blue light penetrates deeper than lights of longer wavelengths, suchas red light.

In red algae and cyanobacteria (b) ..

Human ingenuity has found many uses for algae. Algae provide food for people and livestock, serve as thickening agents in ice cream and shampoo, and are used as drugs to ward off diseases. More than 150 species of algae are commercially important food sources, and over $2 billion of seaweed is consumed each year by humans, mostly in Japan, China, and Korea. The red alga , called nori, is the most popular food product. After harvesting, nori is dried, pressed into sheets, and used in soups, sauces, sushi, and condiments. Algae are considered nutritious because of their high protein content and high concentrations of minerals, trace elements, and vitamins. The high iodine content of many edible algae may contribute to the low rates of goiter observed in countries where people frequently eat algae.