gross 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..

Describe which measure of central tendency - mean, median, or mode was probably used in each situation. Answer in order. I. One half of the gross domestic product (GDP) of country A comes from more than 42.5% of its citizens. II. Computation of per-capita income in several count..

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 li..

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 reaction is an oxidation reaction..

In Cucurbita, pollen tube enters the ovule through the integuments. After the pollen tube enters the embryosac, its apex dissolves and the male gametes are liberated. One of the male gametes fuses with the egg and produces a diploid zygote (Strassburger, 1884) which by further division develops i..

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..

Growth of Population - Population of a country should grow reasonably to match with growth in its gross domestic product to maintain the existing standard of living. Reducing growth or negative growth in population may be desirable if the standard of living should increase by mo..

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 ..