types of organic fertilizers

. The generative cell divides and produces two male gametes while the tube cell disappears. After reaching the ovary, the pollen tube enters into the ovule. Depending upon its place of entry, three types of fertilization have been recognised. They are..

The fertility of the topsoil can be restored by taking the following measures. a) Regular use of manures and fertilizers can replenish the minerals used by the crops. Green manuring can also be done. b) Crop rotation should be practiced c) New techniques of applying water benea..

Reproduction..

Types of Organic Reactions - There are four types of reactio..

The reactions in which an atom or group of atoms in a molecule is replaced or substituted by different atoms or group of atoms are called substitution reactio..

The farm yard manure or organic manure or bio fertilizers and inorganic fertilizers supply the necessary plant nutrients to the soil. Thus, application of such materials increases the nutrient value of the soi..

>Fragmentation takes place in some lower plants and animals such as some worms. The mature organism breaks up into two or more pieces or fragments. The fragments then grow into complete organisms. Regeneration of new plants from the vegetative parts of the parent plant is called..

Different types of tissue may together become organised into an organ for some specific function. E.g., a gland is an organ meant for secretion. In a gland there are four tissues - Epithelium (for secretion) Muscular tissue (for contraction of the gland) Conne..

Organ Transplantation - Organ transplantation has become a therapeutic modality to treat patients with end - stage disease. While many types of organs have been successfully transplanted, the histocompatibility barrier between recipient and donor remains a pr..

Formation of large molecules (polymers) such as proteins, nucleic acids and starch Bonding characteristics of carbon, simple hydrocarbons, complex polymers and biological molecules Amino acids as building blocks of proteins System for naming the ten simplest linear hydrocarbons and isomers c..