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Q What is the system that permits fixation and movement to echinoderms?
The system that permits fixation and movement to substrates in echinoderms is called the ambulacral system. In these animals water enters through a structure called madreporite passes through channels and reaches the ambulacral feet in the undersurface of the body. In the ambulacral region in contact with the substrate there are tube feet emptied and filled by water thus acting as suckers.
The effect of natural selection on colonies or population favouring one group in preference to other may be referred to as group selection. A group can be the smallest collection o
give two examples of chemical reactions which are catalysed by enzymes in the course of brewing
Explain the Ethological Approach in Taxonomy The use of behavioural or ethoIogica1 characteristics in animals is relatively new, though extremely useful, particularly in the id
How come that difference of K+ and Na+, which are both monovalent cations, creates the difference of the net charge of the membrane at different sides?
A Complex of elongation factor EF-G (also known as translocase) and GTP example for EF-G/GTP binds to the ribosome. There are three concerted movements now happen coll
Green leaves make food for plants Heat some alcohol in a jar over boiling water unless it boils. Break various green leaves from a geranium or other plant which has been in the
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Does every gene mutation cause alteration in the protein the gene normally codifies? Not each gene mutation causes alteration in the composition of the protein the gene codifie
Describe the respiratory organ in pila
What is the difference between asexual and sexual reproduction
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