Brown Algae - Classification, Characteristic features , Life Cycle

-

                                          Brown Algae 



Classification : -


Kingdom -  Chromista                          
Phylum -  Ochrophyta

 Class -         Phaeophyceae 

 Scientific Name - Phaeophyceae 


Commonly Called - Sargassum  Weed

Number Of Species -  1500 and mostly they are Marine.

 Colour - The color may vary from brown to olive green. This is due to the presence of pigment Fucoxanthin and chlorophyll ( a, c ).

Characteristics -

  • They are multicellular.

  • They are capable to reproduce through vegetative reproduction (fragmentation ), asexual ( zoospore ), and sexual ( from isogamy to oogamy ).

  • Laminarin and mannitol are present in it as a food material.

  • They follow diplo-haplontic as well as a diplontic life cycle.

  • Kelp is the largest algae among brown algae.

  • The body is divided into stripe, blades, and bladder.

  • Autotropic in nature.

  • Presence of flagella at some point in life.

  • The body contains a special organelle called Pyrenoids which works as to store and synthesize   starch 



Life Cycle -  Life cycle of most large kelp begins when a mature plant releases its spore directly into the water. The release of spore is directly related to the seasonal increase in daylight. These spores settle to a rocky bottom and begin to grow into haploid gametophyte plants, which immediately undergo sexual reproduction.
The embryo that is formed remains attached to the female gametophyte and is secreted to the bottom by a holdfast.

Benefit - Brown algae are a very good source of algin, a colloidal gel. The gel is used today in both; the baking and ice cream industry as a stabilizer. Algin is also found in toothpaste, bread, beer, and paint.




Comments

Post a Comment

Popular posts from this blog

Sycon Canal System With Diagram

-
Image
                                     Canal system in Sycon  A sea creature called a sycon, or scypha , is usually found clinging to rocks or other surfaces. These creatures have tube-shaped bodies that open outward with the help of a hole called an Osculum . They have tiny openings called Spiracles and Ostia all over their bodies to let water in. This water flows through canals inside their bodies and comes out through the Osculum, which is a larger opening used for breathing. We'll observe the shape of this canal system, why it is essential for those animals, type of canal system , and  its significance. The Sycon Type Canal system is the unique feature of the phylum Porifera . This system is also known as the  aquiferous canal system . This system supports the significant function of the body like nutrition, respiration, excretion, etc. History Overview -  Gran...
Read more

How Many Types of Eggs In Animals

-
Image
                                             Types of Egg Hello guys! We'll examine a crucial area of zoology in this blog: different varieties of eggs. So let's define reproduction first before moving on to the subject. Reproduction is the biological process in which a parent is responsible to produce their offsprings which may be of their own kind. Reproduction is a must process for every individual for the continuing existence of the species. As we all know, there are many different species on the planet, and each of them has a unique method of egg production and inside the egg they contain yolk . The yolk is composed of proteins, fats, vitamins, and minerals, which are vital for the growth and development of the embryo.  Eggs can be classified into different types based on the amount of yolk they contain. l.  On the basis of the amount of Yolk - Dep...
Read more

Aurelia Aurita Life Cycle: Characterstics, Classification

-
Image
                                             Aurelia  Aurelia aurita is a type of zooplankton found all over the world. They are see-through and don't have eyes, brains, or hearts. They're usually between 2 to 15 inches wide. Even though they prefer being alone, they get carried together in groups called Blooms by wind and water currents. At night, they look like they're moving through the water like jellyfish, which is why they're sometimes called " jellyfish ".  They have four reproductive organs surrounded by tentacles in their top part. Their body color changes based on what they eat, so they can be blue, pink, or other colors. Let's learn more about Aurelia in detail. Details Of Aurelia Diagram -  Body : The center of the diagram would display the jellyfish's bell-shaped body, often called the " umbrella. " Tentacles : Below the bell, you'd see lon...
Read more