Hi! glycolipids and glycoproteins are important Because it helps to stabilise membrane structure.
I would say commensalism since one organism benefits (the seeds) and the other other is neither benefited nor harmed
The lancelets consist of approximately 32 types of
fish-like maritime chordates in the order of Amphioxiformes,
with an international dissemination in tropical seas and low temperate, they are commonly found half-buried in sand. The lancelets show 4 of the major
characteristics of the phylum chordata.
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Polysaccharide formation allows organism to store energy efficiently. The storage form of food in animals is glycogen and in plants it is starch. Both glycogen and starch are polysaccharides of glucose. Many glucose units are linked together by condensation reaction to form polysaccharide. Compared to having several molecules of glucose in a bulk it is better to store it in the form of condensed bulk i.e polysaccharide. Thus polysaccharides which are formed by condensation reaction i.e by the loss of water molecules are easy to store.
Polysacchrides are: a) stored in the form of condensed bulk
b) they are chemically non-reactive
c) they are osmolytically inactive