What is the third largest phylum?

Phylum chordata is the third largest phylum in the animal kingdom.

Which phylum is the 2nd largest animal phylum?

Mollusca is the second largest Phylum in the Animal Kingdom.

Which phylum is largest phylum?

Arthropod, (phylum Arthropoda), any member of the phylum Arthropoda, the largest phylum in the animal kingdom, which includes such familiar forms as lobsters, crabs, spiders, mites, insects, centipedes, and millipedes. About 84 percent of all known species of animals are members of this phylum.

What is the second largest phylum?

The phylum Mollusca is the second largest in the animal kingdom including about 100,000 living species and with a long fossil record of some 35,000 more. The group is extremely diverse and includes such well known forms as the squid, octopus, slugs, snails and oysters.

Is phylum Mollusca the largest second largest or third largest phylum in the world?

Introduction. The vast majority of animal diversity (∼99%) is comprised of invertebrates, and members of the phylum Mollusca are the second largest phylum with up to 110 000 living species, most of which are marine.

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What is the smallest phylum?

Placozoa is the smallest phylum of all phyla in the kingdom animalia. This placozoa is considered as the smallest phylum because it contains organisms belonging to a single species.

Which is the second largest phylum of invertebrates?

The Nematoda or roundworms, are perhaps the second largest animal phylum, and are also invertebrates. Roundworms are typically microscopic, and occur in nearly every environment where there is water. A number are important parasites. Smaller phyla related to them are the Kinorhyncha, Priapulida, and Loricifera.

What are the 10 Phylums?

The different phylum of the animal kingdom are as follows:

  • Porifera.
  • Coelenterata (Cnidaria)
  • Platyhelminthes.
  • Nematoda.
  • Annelida.
  • Arthropoda.
  • Mollusca.
  • Echinodermata.

What is the largest kingdom of life?

The animal kingdom is the largest kingdom with over 1 million known species. All animals consist of many complex cells.

Which phylum has the largest number of animals?

Arthropoda is by far the largest phylum in the animal kingdom. It includes insects, lobsters, mites, crabs etc. A recent estimate of the number of arthropods on Earth today is 3.7 million species.

Is second largest phylum in Animal Kingdom a Mollusca B Arthropoda C porifera D platyhelminthes?

Complete answer:

There are 10 distinct phylum in animal kingdom, and they are porifera, Coelenterata, Ctenophora, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata, Hemichordate, Chordata. The largest animal kingdom is Arthropoda and Mollusca comes second.

What phylum is the body segmented?

Phylum Annelida includes vermiform, segmented animals. Segmentation is seen in internal anatomy as well, which is called metamerism. Annelids are protostomes. These animals have well-developed neuronal and digestive systems.

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What is the nature of body cover of molluscan?

Mollusk, also spelled mollusc, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.

What is true Mollusca?

Mollusca have bilateral symmetry and they have CaCO3​ (calcareous) shell. Was this answer helpful?

What is visceral mass?

visceral mass: the soft, non-muscular metabolic region of the mollusc that contains the body organs. mantle: the body wall of a mollusc, from which the shell is secreted.

Which of the following is not a chordate character?

In some chrodats notochord is replaced by vertebral colum in adult stage. Protochordates i.e., Urochordates and Cephalochordates don’t have a well developed spinal cord. Thus, the correct answer is option D.

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