planula การใช้

• Subsequent development produces a tiny larva, known as a planula.
• The gonozoids liberate crawling planula larvae that search out moving gastropod shells
• Embryos develop in two to three days leading to a planula larvae.
• The fertilised eggs develop into planula larvae which become polyps.
• They produce gametes which, after fertilisation, develop into planula larvae.
• The embryos develop into planula larvae which are released into the sea.
• The planula larvae form part of the plankton and drift with the currents.
• Once attached to a substrate, a planula quickly develops into one feeding polyp.
• All the polyps and jellyfish arising from a single planula are genetically identical clones.
• The planula larvae that develop from the eggs drift as part of the zooplankton.
• The embryos are brooded there before being released as planula larvae into the water column.
• The egg hatches in the digestive system of the intermediate host, producing a planula larva.
• The fertilized egg develops into a planula, which settles and grows into a single polyp.
• Fertilised eggs develop into planula larvae.
• A few omit the planula, polyp and ephyra phases and produce new medusae directly from eggs.
• Planula larvae swim with the aboral end ( the end away from the mouth ) in front.
• The planula larvae drift with the currents before settling on the seabed and undergoing metamorphosis into polyps.
• The resulting embryos develop into planula larvae which one to three weeks later settle on the seabed.
• After fertilisation, a planula larva forms which later develops into a cubopolyp with a few tentacles.
• The eggs develop into planula larvae which drift with the current before settling and growing into new individuals.