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The second free-swimming larval stage of bivalves is the?
trochophore
What is the diffenition for shrimp?
A swimming decapod (ten legs) crustacean
Larval stage of mollusks and annelids?
The larval stage of mollusks is called a trochophore, which is a free-swimming, ciliated larva that eventually develops into the adult form. For annelids, the larval stage is called a trochophore or a nectochaete, which also metamorphoses into the adult form after a period of growth and development.
What is a cercaria?
a free-swimming larval stage in which a parasitic fluke passes from an intermediate host (typically a snail) to another intermediate host or to the final vertebrate host
Does the planula in a jellyfish move?
The planula is a free-swimming larval stage in the lifecycles of most jellyfish species. The planula swims with the aid of numerous cilia covering its surface.
What is a sea squirt off spring?
Sea squirt offspring are typically released in larval form and undergo a free-swimming stage before settling down and undergoing metamorphosis into their adult, stationary form. During this metamorphosis, they undergo significant changes in body structure and transition into filter-feeding sessile marine animals.
What are the appendages on the underside of a crustacean called?
The appendages on the underside of a crustacean are called "pleopods" or "swimmerets." These structures are primarily used for swimming and can also play a role in reproduction, as they may assist in carrying eggs. In some species, they can vary in size and function, depending on the sex and developmental stage of the crustacean.
What is the name of the planktonic larval stage of the phylum porifera?
The planktonic larval stage of the phylum Porifera is called the "parenchymula." This free-swimming larva is typically spherical and is characterized by its ability to move through the water before settling down to develop into a mature sponge. Parenchymula larvae play a crucial role in the dispersal and reproduction of sponges.
What is the function of miracidium before hatching of egg?
The miracidium is the free-swimming larval stage of certain trematodes (flukes) that hatches from the egg in aquatic environments. Its primary function before hatching is to develop the necessary structures for motility and sensory perception, enabling it to locate and infect a suitable intermediate host, typically a snail. This larval stage is crucial for the continuation of the trematode's life cycle, as it must successfully penetrate the host to develop into the next larval stage.
What are the stages of growing coral?
# fusion of gametes from parent coral and formation of zygote # free-swimming larval form (planula) # settling on a substrate and forming a stationary polyp # polyp reproduces by budding (asexually) and forms a colony # sexual maturity reached
How does a cypris move?
A cypris is a larval stage in the life cycle of some crustaceans, like barnacles. They are usually free-swimming and use their appendages to propel themselves through the water in search of a suitable substrate to settle and undergo metamorphosis into the adult form.
Is mussel a crustacean?
No because a crustacean has a exoskeleton and a mussel has a shell
