عرض المشاركات من سبتمبر, 2013

Example of Nodular roots, Velamen roots and Reproductive roots

Nodular roots: Plants of pea family have roots with nodules. Symbiotic  nitr…

Example of Pneumatophores

Pneumatophores are negatively geotrophic (growing away from gravity) respira…

Example of Sucking Roots or Haustoria

These are roots of parasites which suck nutrients from the host plant. …

Example of Assimilatory Roots

These are chlorophyll bearing green, photosynthetic roots. Example: Tinospo…

Example of Climbing Roots and Clinging Roots

Climbing roots: These aerial adventitious roots help weak stemmed plants  to …

Example of Stilt Root

Stilt roots are aerial adventitious roots which grow obliquely down wards fr…

Example of Prop Roots

Prop roots grow vertically downwards from aerial branches.On reaching the soi…

Example of Adventitious Root Tubers

Adventitious roots are modified for storage and many other functions like add…

Example of Tap Root Tubers (Root Modifications)

Tap root are modified mainly for storage of food. They are known as tubers.  …

Examples of Lamarck Theory of Evolution

Lamarckism is the first theory of evolution , which was proposed by Jean Bapt…

Example of Phylum Porifera Class Calcarea, Hexactinellida and Demospongia

Phylum Porifera includes three classes, chiefly based on the type of its ske…

Example of Ctenophora Class Tentaculata and Class Nuda

The ctenophora  are a small group of solitary, free swimming , marine, plank…

Example of Coelenterata Class Hydrozoa, Scyphozoa and Anthozoa

Phylum Colenterata has been divided into three classes: Hydrozoa, Scyphozoa a…

Example of Natural Pesticides

Pesticides may be a chemical substance or biological agent used against pests…

Example of Synthetic Insecticides

Insecticides are chemicals that destroy or kill insects. Insecticides  are o…

Example of Pollutants

A pollutant defined as any solid, liquid or gaseous substance present in such…

Example of Water Pollutants

Water, the most abundant and wonderful natural resource is extremely essentia…

Example of Polymers - Natural Polymers and Synthetic Polymers

The word polymer means ‘many parts’. A polymer is a substance of high molecula…

Example of Fibers

These are polymers having strong intermolecular forces like hydrogen bondings.…

Example of Elastomers

These are polymers in which the polymer chains are held together by weakest in…

Example of Thermoplastics

These are polymers which can be easily moulded into any desired shape by heat…

Example of Thermosetting plastics (Thermosets)

These are certain polymers which on heating become infusible and insoluble. He…

Example of Archaebacteria

Archaebacteria are a group of most primitive prokaryotes which are believed …

Example of Halophiles (Haloarchaea)

Halophiles (Haloarchaea) are named so because they usually in salt rich subst…

Example of Thermoacidophiles

Thermoacidophiles: These archaebacteria have dual ability to tolerate high t…

Example of Methanogens (Methanogenic Archae)

Methanogens : These archaebacteria are strict anaerobes. Nutritionally they a…

تحميل المزيد من المشاركات لم يتم العثور على أي نتائج