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EXCRETION IN PRAWN-
A pair of antennary gland or green gland and a median renal sac present.
Green glands lie at the base of antennae & open out by renal aperture.
what arachnid is beneficial
Q. Besides vertebrates two invertebrate phyla contain species that make pulmonary respiration. Which are these phyla? Terrestrial molluscs and the arachnid arthropods are the i
Class angiospermae (Flowering plants) Flowers are the reproductive structures. Ovules are protected within ovary, xylem vessels are present. After fertilisation the ovary develop
Dengue Dengue fever is a viral disease transmitted by mosquito bites that occurs worldwide in tropical and subtropical areas. Major epidemics have occurred in recent years in
Define Prevention of IDD - Iodized salt distribution? Many approaches to reduce iodine deficiency has been formulated. Some of these are reviewed herewith: Iodized salt dist
Explain the Interaction of Riboflavin with other Nutrients? Riboflavin, as already discussed under the functions, interrelates with other B vitamins, notably niacin, which r
Why is a leguminous crop rotation used in agriculture? Leguminous crop rotation and other crop rotations are used in agriculture because in these plants many bacteria significa
What is mutualism? Mutualism is the ecological interaction in which both participants advantage and that is obligatory for their survival. Mutualism is a harmonious (positive)
What has caused evolution? 1) Different individuals have dissimilar characteristics 2) These differences result in altering abilities to reproduce under local circumstances
Crisis due to Deforestation Due to continuing deforestation we are faced with a major ecological and socio-economic crisis. To reverse this trend of deforestation a National
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