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EXCRETION IN FLATWORM -
Main organs are flame cells, having bundle of cillia.
It receives solute and water from surrounding tissue fluid by ultra filtration & discharge the filtrate into nephredial ducts.
Here reabsorption occur. Excretory material are given out through excretory pore.
Q. How mineral salts participate in enzymatic activity? Many mineral salts are cofactors of enzymes that are the substances without which enzymes do not work.
Explain the term Microfilaments ? Microfilaments are fine fibrils, only 7 nm in diameter, composed of a protein called actin. Actin is one of the two major proteins involved
Segments of Environment: The environment is not a simple distribution of gases but is highly complex and structured. It comprises of four segments: Lithosphere
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
Q. What are the poriferans? The phyla Porifera include the simplest creatures of the animal kingdom. Sponges are aquatic sessile beings they are not able to move by themselves
Gastrointestinal Tract - Changes Associated with ageing? Many path physiological factors limit the adequacy of the dietary intake of elderly. Loss of natural dentition may occu
The effect of light on the growth of stems (a) Plant some seeds that grow rapidly like as oats, radish, bean or mustard seeds in two flower pots. When the seedlings are about
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