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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.
What are mycorrhizas? How does each participant benefit in this ecological interaction? Mycorrhizas are mutualist ecological interactions among fungi and some plants roots. Fun
Advantages and disadvantages
SHORT COMING OF CELL THEORY / EXCEPTIONS OF CELL THEORY (i) Viruses can be considered as exception to cell theory. They are made of proteins and ones of nucleic acid i.e.
Q. Phylogenetic species concept ? Taxonomists (scientists who compare, classify and name organisms) tend to describe a species by studying their physical characteristics and be
Starch is a large molecule consisting of between 300 to 500 glucose molecules joined together. A glucose molecule is only very small, consisting of 24 atoms. Cellophane is simila
SIMPLE LIPIDS They are lipids formed of fatty acids and alcohol without any additional group. e.g. fats or true fats,wax,cutin, suberin. Simple lipids are mainly of 2 types
Concerning the mixture of arterial with venous blood what is the difference between the human fetal circulation and the adult circulation? In the human fetal circulation there
Define needs for Nutritional Relief Programme and Interventions? A general feeding programme is required during first stage when the affected population does not have sufficien
what is radula?
list of the structures you would expect to find in the dermis.
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