Table of Contents
- 1 What is an immature form of an animal called?
- 2 What is the reason for the formation of larva during the life cycle of many animals?
- 3 In which animal the larval stage is known as Tornaria larva?
- 4 What are the different stages of larvae called?
- 5 Do humans go through a metamorphosis?
- 6 What is tornaria larva in zoology?
What is an immature form of an animal called?
larva. An immature form of an animal that subsequently undergoes metamorphosis into its adult form; includes the caterpillars of moths and butterflies, the maggots of flies, and the tadpoles of frogs and toads; hatches from an egg and froms a pupa.
What is the reason for the formation of larva during the life cycle of many animals?
A larva sometimes functions as a food gatherer—in many species the larval stage occurs at a time when food is abundant—and has a well-developed alimentary system. It stores food so that the transformation to the adult stage can occur. Some larvae function in both dispersion and nutrition.
What is an immature sponge called?
larva. the immature form of an animal that looks very different from the adult.
What is metamorphosis short answer?
The transformation of the larva into an adult through drastic changes is called metamorphosis. Metamorphosis is a biological process which involves sudden and abrupt changes in the body structure of the animal by cell growth and differentiation. It is generally observed in amphibians and insects.
In which animal the larval stage is known as Tornaria larva?
A tornaria is the planktonic larva of some species of Hemichordata such as the acorn worms. It is very similar in appearance to the bipinnaria larvae of starfishes, with convoluted bands of cilia running around the body. It is an oval shaped, transparent larva.
What are the different stages of larvae called?
Butterflies, moths, beetles, flies and bees have complete metamorphosis. The young (called a larva instead of a nymph) is very different from the adults. It also usually eats different types of food. There are four stages in the metamorphosis of butterflies and moths: egg, larva, pupa, and adult.
What is the name of the cells that line the Ostia?
In some sponges, ostia are formed by porocytes, single tube-shaped cells that act as valves to regulate the flow of water into the spongocoel.
Where are Archaeocytes found?
sponges
Archaeocytes (from Greek archaios “beginning” and kytos “hollow vessel”) or amoebocytes are amoeboid cells found in sponges. They are totipotent and have varied functions depending on the species.
Do humans go through a metamorphosis?
Insects and amphibians are the only animals that can metamorphose physically. About 12 percent of insects make a complete metamorphosis, and amphibians are the only animal with a backbone that can do it. Humans, with our structural system intact, are not able to make such a physically striking transformation.
What is tornaria larva in zoology?
Who described tornaria larva?
Tornaria is a characteristic, free-swimming larva of some species of the Enteropneusta or acorn worms (Hemichordata). Tornaria was first described by Müller (1850) who mistook it for an echinoderm larva.