net secondary productivity

Primary and Secondary Productivity - 'The amount of organic matter or biomass produced by an individual organism, population, community or ecosystem during a given period of time is called productivity'. Primary production refers to all or any part of the ene..

'The amount of organic matter or biomass produced by an individual organism, population, community or ecosystem during a given period of time is called productivity..

The rate of increase in the biomass of heterotrophs per unit time and area is called secondary productivity. Secondary productivity serves as an index of significance of the population in terms of food resources available to the heterotrophic populations, in..

Gonads are the reproductive organs. The male gonads are the testes and the female gonads are the ovaries. Both produce hormones under the influence of hormones of the pituitary (see under pituitary gland). Testes produce testosterone which produces the secondary sexual characteristics lik..

An alkyl halides or a benzyl halide reacts with ammonia to form primary secondary and tertiary amines. If ammonia is used in excess primary amine is the major product. Under these conditions in the reaction mixture, an alkyl halide is more likely to encounter and react wit..

Characteristics of Electrolysis - Following are the characteristics of the electrolysis process: 1) Electrolytic reactions involve the gain of electrons at the cathode and loss of electrons at anode. 2) The cathode reaction is a reduction reaction as the cations accept electrons, while the anode re..

Primary and secondary amines combine with benzene sulphonyl chloride (C 6 H 5 SO 2 Cl) to form sulphonamides. The product formed by the action of secondary amine on benzene sulphonyl chloride does not dissolve in an alkali. This is because there is no hydrogen atom att..

At about the age of 10 to 13 years, the ovaries of females are stimulated by the follicle stimulating hormone (FSH) of the pituitary. This is called the onset of puberty and is accompanied by release of hormones oestrogen and progesterone. These hormones control the production of ova or ..

Grazing food chain is generally seen in ecosystems such as grassland, pond or lake where a substantial part of the net primary production is grazed on by herbivores (cattle and rodents). Usually upto 50% of the NPP is grazed on by these animals in their respective ecosyste..

The mixture of amines is reacted with benzene sulphonyl chloride. The product mixture obtained is treated with aqueous HCl and filtered. The filtrate contains tertiary amine as its hydrochloride which can be isolated as amine with addition of base. The acid insoluble residue contain..