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Animal Kingdom
Question
What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
Solution
The phylum, Arthropoda, consists of more than two-thirds of the animal species on earth. The reasons for the success of arthropods are as follows.
(i) Jointed legs that allow more mobility on land.
(ii) Hard exoskeleton made of chitin that protects the body from the harsh conditions.
(iii) The hard exoskeleton also reduces water loss from the body making them more adapted to terrestrial conditions.
(iv) The fertilisation is internal which provides protection to the progeny from the external harsh conditions.
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Some More Questions From Animal Kingdom Chapter
What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
Water vascular system is the characteristic of which group of the following:
“All vertebrates are chordates but all chordates are not vertebrates”. Justify the statement.
How important is the presence of air bladder in Pisces?
What are the modifications that are observed in birds that help them fly?
Could the number of eggs or young ones produced by an oviparous and viviparous mother be equal? Why?
Segmentation in the body is first observed in which of the following
Match the following:
Prepare a list of some animals that are found parasitic on human beings.
In some animal groups, the body is found divided into compartments with at least some organs/ organ repeated. This characteristic feature is named
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