Sentence examples for molluscs use from inspiring English sources

Some molluscs use internal fertilization and/or are hermaphrodites, functioning as both sexes; both of these methods require more complex reproductive systems.

Supporters of a close relationship with molluscs maintained that a pair of bars, running across the mouth and armed with backward-pointing teeth, were a rudimentary form of the radula, the toothed tongue that molluscs use to scrape up food and convey it back to the throat.

In addition, we report here the first evidence that molluscs use independently evolved mechanisms to pigment their shells.

The nucleotide sequences and deduced amino-acid sequences of the cephalopod eye cDNAs isolated in the present study were aligned together with estimated homologs of other molluscs using homology searches.

He can tell a mussel that holds a pearl just by looking at it, and could extract it without damaging the mollusc, using skills learned from his father.

Molluscs never use phosphate to construct their hard parts, with the questionable exception of Cobcrephora.

Molluscs that use such a system remain of one sex all their lives and rely on external fertilization.

Besides a search for naturally occurring tumor-like lesions and neoplasms in molluscs, we used modulation of gene expression by genetically engineered constructs bearing foreign genes, the yeast transcriptional activator gal4 gene or the agrobacterial rol oncogenes, in sea urchin embryos and sea urchin embryonic cells.

Bivalve molluscs are used as bioindicators to monitor the health of aquatic environments in both fresh water and the marine environments.

A striking feature of molluscs is the use of the same organ for multiple functions.

TBT interferes with reproduction in marine animals, inducing imposex (superimposition of male sexual characters in females) in gastropod molluscs, an effect used to measure TBT pollution in sea-water [3], [4].