Biology Blogs For Class 11th, 12th & NEET

                                     Types Of  Pollination  The transfer of pollen grains from the stigma of a pistil is known as Pollination. Pollination in flowering plants occurs by two methods- self-pollination and cross-pollination.  Self Pollination - Self Pollination involves the transfer of pollen grain from the anther to the stigma of the same flower or genetically similar flower. It is of two types -  Autogamy - Transfer of pollen grains from the anther to the stigma of the same flower is known as Autogamy. It occurs by the three methods -  Self Pollination  showing by A& B and cross-pollination is shown by B & C   Cleistogamy - Some Plants never open to ensure complete self-pollination. This condition is called Cleistogamy. For example - oxalis, viola. Homogamy - Anther and stigma of the bisexual flower of the same pla...

                                          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 ...