Submerged stage - hydrarch, Biology

Assignment Help:

Submerged Stage - Hydrarch

This habitat which is now shallower and is richer in nutrients and where light is available up to a certain depth, becomes suitable for the growth of rooted, submerged hydrophytes like Myriophyllum, Elodea, Hydrilla, Potamogeton Vallisneria, Utricularia and Ceratophyllum. These grow at various depths, mostly rooted in the muddy or sandy bottom depending on the species, and also on the clearness or turbidity of water.

Year after year, this vegetation expands and covers large areas, and brings about marked changes in the habitat. Materials eroded by streams, rainwater or surface runoff are brought to the pond, and some of it are deposited on the plants because they form a direct obstacle in its advance, and especially because they slow down the currents, when the plants and the associated animals die, they sink to the bottom, where because of the insufficient oxidation, this organic matter is partially decomposed. Thus humus is formed which cements the mucky soil together making it firmer. The result of these reactions is the building up of substratum and shallowing of lake. Obviously, this process is disadvantageous to the present occupants and these are eventually replaced by another type of plants, which are of floating type.


Related Discussions:- Submerged stage - hydrarch

Cytochemistry, Cytochemistry It is well known that certain stains and d...

Cytochemistry It is well known that certain stains and dyes specifically combine with certain chemical components of the cell. Cytochemical techniques take advantage of this fa

What is the life cycle of the schistosome, Q. What is the life cycle of the...

Q. What is the life cycle of the schistosome? Female and Male adult schistosomes live within blood vessels of the human intestines. The females discharge eggs that trespass the

How proteins can be classified, How Proteins can be Classified? I. Shap...

How Proteins can be Classified? I. Shape and size: fibrous proteins and globular proteins. Fibrous proteins play structural roles  in organisms. Globular proteins consist of lo

Describe the classification of life in diversity of life, Describe the Clas...

Describe the Classification of Life in diversity of life? There are at least 10 million different kinds of living organisms inhabiting Earth. Many different organisms have comm

Study of tonana larva, Study of tonana larva Tornaria larva is typical...

Study of tonana larva Tornaria larva is typical in the life-history of hemichordates. Examine the permanent slide and note the following features: I. The tornaria larva usu

Why pulses are important for human - nutritional factor, Why Pulses are imp...

Why Pulses are important for human - nutritional factor? Pulses are rich sources of proteins (20-25 g/100 g), the limiting amino acid being methioniize. However, protein quality

Explain tools of satellite dna, Satellite DNA is useful tool in: 1. Org...

Satellite DNA is useful tool in: 1. Organ transplantation 2. Sex determination 3. Forensic science 4. Genetic engineering Forensic science

Crown and bridge remover, Crown and bridge remover - Nash\Taylor tempo...

Crown and bridge remover - Nash\Taylor temporary crown remover -morell remover -position the curved tip below the height of contour or at the margin of the crown -Apply seve

Advantage & disadvantage of using fungi as source of protein, Define Advant...

Define Advantage & disadvantage of using fungi as source of protein? Advantages 1. Easy to harvest from culture medium. 2. Texture of the fungi improves the functional

Ovarian androgens, Normal 0 false false false EN-IN X...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd