Concerning germ layers and the presence of coelom how are arthropods characterized?

Concerning germ layers and the presence of coelom how are arthropods characterized?
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Arthropods are triploblastic (they have three germ layers) and coelomate beings.
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Ascaris is characterized by (a) presence of true coelom but absence of metamerism (b) presence of true coelom and metamerism (metamerisation) (c) absence of true coelom but presence of metamerism (d) presence of neither true coelom nor metamerism.

Description : Ascaris is characterized by (a) presence of true coelom but absence of metamerism (b) presence of true coelom and metamerism (metamerisation) (c) absence of true coelom but presence of metamerism (d) presence of neither true coelom nor metamerism.

Last Answer : (d) presence of neither true coelom nor metamerism.

How can the endoskeleton of echinoderms be characterized in comparison to analogous structures present in vertebrates, arthropods and molluscs?

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Three germ layers are formed during which stage of embryonic development :-

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What are ectoderm and endoderm germ layers?

Description : What are ectoderm and endoderm germ layers?

Last Answer : Need answer

How are animals classified according to the germ layers present in their embryonic development ?

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What are the three types of germ layers that form tissues and organs in animals ?

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Last Answer : The three germ layers are the ectoderm, the mesoderm, and the endoderm. 39. How is the mesoderm (third germ layer) of triploblastic animals formed? The mesoderm appears from differentiation of endodermal cells that cover the dorsal region of the archenteron.

How are animals classified according to the germ layers present in their embryonic development ?

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What are the three types of germ layers that form tissues and organs in animals ?

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How many germ layers originate the body of platyhelminthes? In relation to this characteristic how are these animals classified?

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Which are the germ layers present in cnidarians? Which tissues of the animal do they originate?

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How does the presence of exoskeleton explain the general small size of arthropods?

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How are the three main arthropod classes characterized according to the presence of antennae?

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How are the three main arthropod classes characterized according to the presence of wings?

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In the given table which phyla is correctly matched with its levels of organisation, symmetry and coelom ?

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In the fist course of evolution, true coelom appeared for the first time in

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Select incorrect matching of animlas, their body symmetry , and coelom.

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Blastopore is the pore of (a) archenteron (b) blastocoel (c) coelom (d) alimentary canal.

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Alveolar membrane found in (a) Lung (b) Tooth (c) Coelom (d) None

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Which one of the following statements is NOT correct? [IAS 2003] (a) Black cotton soil of north-west India was formed by the weathering of basaltic lava rocks (b) Sedimentary rocks are distinguished from other types of rocks by the presence of distinct layers (c) Granite has large crystals of quartz, feldspar and mica in it (d) A metamorphic rock is softer and less compact than its original type

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