planula वाक्य
उदाहरण वाक्य
मोबाइल
- After fertilisation, each embryo develops within a day or so into a free-swimming planula larva.
- The released eggs are fertilized, and the resulting zygote develops quickly into a multicellular " planula ".
- After 3 days the egg develops in a planula; at this stage movement is only done by ciliary action.
- The free-swimming planula larvae eventually settle on the seabed and develop into juvenile polyps which found new colonies.
- The fertilised egg develops into a planula, which settles after fifteen to twenty days and grows into a new individual.
- The fertilized egg develops into a planula larva which drifts with the plankton before settling and developing directly into another polyp.
- The egg hatches into a free-swimming planula larva that settles on the seabed when it has completed its development.
- Reproduction involves the release of planula larvae which spend somewhere between a few hours and several days in the open sea.
- Planula larvae that develop from fertilised eggs sink to the seabed five days later and undergo metamorphosis to found new colonies.
- As a planula settles down, it gives rise to a colony of polyps that are attached to the sea-floor.
- The planula then attaches to a hermit crab shell and subsequently undergoes metamorphosis to turn into a single polyp with extending stolons.
- Eggs and sperm are ejected through the mouth and after fertilisation, develop into planula larvae which form part of the plankton.
- After fertilisation, the planula larvae form part of the plankton and eventually settle on the seabed and undergo metamorphosis into polyps.
- Sexually mature stauromedusae free-spawn eggs or sperm, which fertilize in the sea and form a creeping, unciliated planula larva.
- Like most other hydrozoans, " T . dohrnii " begin their life as free-swimming tiny larvae known as planula.
- The eggs have yolks, and the embryos are brooded in the coelenteron until they are liberated into the water column as planula larvae.
- In moon jellies, the eggs lodge in pits on the oral arms, which form a temporary brood chamber for the developing planula larvae.
- The resulting zygote becomes a free swimming planula larva which eventually settles onto a suitable substrate where it undergoes metamorphosis to become a small polyp.
- Despite the close relationship between the two groups, the larva does not resemble that of the acorn worms; they are " planula-like ".
- Up to fifty planula larvae are released from an adult, each one being approximately long and half that width, with zooxanthellae already present in their tissues.
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