You asked: What are the two largest phyla of animals?

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.

What are the two major phyla of animals?

Protostomes include the phyla Mollusca, Annelida and Arthropoda. Deterostomes include the phyla Echinodermata, Hemichordata and Chordata.

What’s the largest phylum of animals?

Arthropoda

The arthropod phylum includes all insects, spiders and millipedes, as well as crustaceans and sea spiders. The long-extinct trilobites were also arthropods. Arthropoda is currently the largest phylum, with well over a million species.

Which is the second largest animal phylum?

Mollusca is the second largest Phylum in the Animal Kingdom.

Which is the largest and second largest phylum among Kingdom Animalia?

Mollusca composes the 2nd largest phylum of animal kingdom after arthropods, which is the largest phylum in the animal kingdom. Around 85,000 species of molluscs are recognised. Molluscs is the largest marine phylum, comprising about 23% of all the named marine organisms.

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What are the 9 phyla of animals?

There are 36 recognized animal phyla, of which but nine (Mollusca, Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Arthropoda, Echinodermata, and Chordata) contain the vast majority of described, extant species.

Which animal phylum is most successful?

Arthropods are considered the most successful animals on Earth. The phylum includes more species and more individuals than all other groups of animals combined. Over 85 percent of all known animal species are arthropods (Fig.

Are crabs insect or animal?

Crabs are decapod crustaceans which have a very short tail and are covered with a thick shell, or exoskeleton and are armed with a single pair of claws. Crabs are invertebrates (animals without a backbone). Their exoskeleton protects them from predators and provides support for their bodies.

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.

What is not a chordate character?

In vertebrate fishes, the pharyngeal slits become the gills. Humans are not chordates because humans do not have a tail. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column.

What is the largest phylum of plants?

The Anthophyta, the angiosperms or flowering plants, is the largest and youngest phylum of plants and the one whose members dominate the vegetation of the modern world.

Which is the third largest phylum?

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

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

Complete answer:

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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.

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 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.

Which one of the following belongs to Mollusca?

The animals belonging to the phylum Mollusca are apple snail, pearl oyster, devil fish, tusk shell, etc. Hence correct answer is option A.

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