Which is the 2nd largest phylum?

Mollusca is the second largest Phylum in the Animal Kingdom. Molluscs are both terrestrial and aquatic (marine or freshwater).

Which is the third largest phylum?

Phylum chordata is the third 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.

What is the 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.

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.

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What are the 9 major phyla?

  • * Porifera (sponges)
  • * Cnidaria (jellyfish, corals, anenomes)
  • * Platyhelminthes (flatworms)
  • * Nematoda (roundworms)
  • * Mollusca (bivalves, squid)
  • * Annelida (segmented worms)
  • * Arthropoda (arachnids, crustaceans, insects)
  • * Echinodermata (starfish, urchins)

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 largest class in animal kingdom?

The biggest class of animal kingdom is? Answer: Insecta is a class of invertebrates. They are placed within the phylum Arthropoda. The characteristics of group Insecta are that they have six legs or three pairs of legs.

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.

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 are the 10 Phylums?

The different phylum of the animal kingdom are as follows:

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

Which class has the largest number of animals?

The insects or class Insecta comprise the largest number of animals in the world. The total number of insect species is estimated at around 6 to 10 million and comprises over 90% of the animal life forms on Earth.

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What type of skeleton is present in arthropods?

Arthropod and vertebrate skeletons are quite distinct from each other. Basically, the vertebrate skeleton is internal (an endoskeleton) while the arthropod skeleton is external (an exoskeleton). Here, both kinds will be referred to as skeletons.

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