Tag: animal diversity - ii (phylum: chordata)
Questions Related to animal diversity - ii (phylum: chordata)
Which of the following sets of features of Echidna/Platypus makes them form a link between reptiles and mammals?
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Produce milk for their offspring even though they lays eggs
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Eggs with yolk and hair on body
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Egg shell and presence of diaphragm
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All of the above
Platypus and Echidna are warm-blooded animals. They belong to Mammalia because they have hair on their body and produce milk from mammary glands to feed their young ones. However, they lay eggs without giving birth to young ones. Laying eggs is characteristics of class Reptilia. Hence they form a link between reptiles and mammals.
Whale Fish is a member of
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Reptilia
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Arthopoda
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Coelenterata
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Mammalia
(A)Reptilia is a class of crawling animals where the members lay eggs.
A non-ruminant member of artiodactyla is
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Camel
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Pig
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Hippopatomus
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Both B and C
Artiodactyla is an order possessing cloven-hooved mammals. Generally, they are ruminants but some non-ruminant members are Pigs and Hippopotamus.
Mammary glands are without teats in
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Prototheria
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Metatheria
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Eutheria
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Theria
Monotremes or Prototheria are mammals that do not give birth to live young ones. Instead, they lay eggs and nurse them after they have hatched. They have mammary glands but no teats. They simply pour milk onto their skin and it gets collected in a pouch where the babies can drink it from.
So the correct answer is 'Prototheria'.
Mammals giving rise to immature young ones and nursing them in a pouch are
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Monotremes
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Marsupials
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Primates
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Carnivores
Spiny ant eater belongs to
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Prototheria
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Metatheria
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Eutheria-Pholidota
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Eutheria-Insectivora
Animals belonging to the subclass Prototheria lay eggs like non-mammals. But they feed their newborns with the secretions of their mammary glands. They are also called Monotremes as they have a single opening for both excretion and reproduction. There are only three surviving species of monotremes, spiny anteaters are one of them.
Kangaroo belongs to
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Monotremata
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Marsupialia
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Prototheria
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Insectivora
(A)Monotremes are the egg-laying mammals.
A metatherian without a marsupium is?
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Didelphis
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Myrmecobius
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Bandicoot
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Koala
Hedge Hog belong to order
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Rodentia
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Dermoptera
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Insectivora
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Pholidota
(A) Rodents are those animals whose incisors are continuously growing.
Ancestors of mammals belongs to
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Therapsida
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Ornithischia
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Silusoidea
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Chelonia
The ancestors of Mammals belong to Therapsida as there are various similarities seen in both of them which are mostly only seen in mammals.