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A home-made wormery
A wooden box 30 cm by 30 cm by 15 cm fitted with a glass front is beneficial for studying the habits of earth-worms.
Fill the box nearly to the top with layers of (a) sand; (b) leaf mould; and (c) loam, padding down every layer before adding the next.
Place lettuce leaves, dead leaves, carrot, etc. on the surface soil, together with few worms.
Keep the contents damp and examine the behaviour of the worms.
CONTRO L OF EXCRETION - 1. In brain hypothalamus is osmocentre that controls minerals. 2. Cells of DCT & arterioles combien to form Juxta glomerular node, it se
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excretory organs of protozoa
State about the Latent squint disease Latent squint is seen commonly as exophoria in infancy and presbyopic age and esophoria in childhood. Hypermetropes can have esophoria and
Compare the modes of intercellular communication used by the endocrine and nervous systems and discuss the functional significance of the differences between the two systems.
In the short term what will happen to the levels above and below a population of secondary consumers of a numeric pyramid if a large number of individuals from this population dies
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What are the functional divisions of the nervous system? Functionally the nervous system can be separated into the somatic nervous system and visceral nervous system. The so
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Hydrogen ( H) has 1 electron, carbond ( c) has 6 electrons ; oxygen ( O) has electrons, Nitrogen ( n) HAS 7 electrons. Use the octet rule to determine which of the following is mos
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