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?

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Produce milk for their offspring even though they lays eggs

  2. Eggs with yolk and hair on body

  3. Egg shell and presence of diaphragm

  4. All of the above

Show answer
Correct Option: D
Explanation:

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

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Reptilia

  2. Arthopoda

  3. Coelenterata

  4. Mammalia

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Correct Option: D
Explanation:

(A)Reptilia is a class of crawling animals where the members lay eggs.

(B)Arthropoda is a class of insects where the members are oviparous, they lay eggs.
(C)Coelenterate is a class where organisms are oviparous but fertilization is internal.
(D)Mammals are the organism which gives birth to their young ones, they are viviparous. Since the whale is viviparous.
So, the answer is 'Mammals'.

A non-ruminant member of artiodactyla is

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Camel

  2. Pig

  3. Hippopatomus

  4. Both B and C

Show answer
Correct Option: D
Explanation:

Artiodactyla is an order possessing cloven-hooved mammals. Generally, they are ruminants but some non-ruminant members are Pigs and Hippopotamus.

Ruminants are the animal whose stomach is divided into four compartments and one of them is rumen which helps in the microbial fermentation of the ingested food. Since pig and hippopotamus do not contain rumen, they are not ruminants.
The answer is "Both B and C".

Mammary glands are without teats in

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Prototheria

  2. Metatheria

  3. Eutheria

  4. Theria

Show answer
Correct Option: A
Explanation:

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

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Monotremes

  2. Marsupials 

  3. Primates

  4. Carnivores

Show answer
Correct Option: B
Explanation:
The mammals who gives birth to immature young ones and nurse them in a pouch are marsupials (kangaroo, koala). These have the typical characteristics of mammals such as mammary glands, hair on the body. But these organisms have ultra-short pregnancies as compared to a eutherian mammal. The young ones are immature, almost embryonic. They complete their development inside the pouch.
So, the correct option is 'Marsupials'.

Spiny ant eater belongs to

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Prototheria

  2. Metatheria

  3. Eutheria-Pholidota

  4. Eutheria-Insectivora

Show answer
Correct Option: A
Explanation:

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.

So, the correct answer is 'Prototheria'.

Kangaroo belongs to

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Monotremata

  2. Marsupialia

  3. Prototheria

  4. Insectivora

Show answer
Correct Option: B
Explanation:

(A)Monotremes are the egg-laying mammals.

(B)Marsupials are the pocket bearing mammals where they keep their undeveloped baby for development.
(C)Prototherians are the organisms that lay eggs.
(D)Insectivora are the organisms that feed on insects.
So, the correct answer is 'Marsupials'.

A metatherian without a marsupium is?

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Didelphis

  2. Myrmecobius

  3. Bandicoot

  4. Koala

Show answer
Correct Option: B

Hedge Hog belong to order

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Rodentia

  2. Dermoptera

  3. Insectivora

  4. Pholidota

Show answer
Correct Option: C
Explanation:

(A) Rodents are those animals whose incisors are continuously growing.

(B) Dermopterons are gliding animals.
(C) Insectivores are those plants or animals that feed on insects.
Hedge hod feeds on insects.
(D) Pholidots are scaly animals.
So, the answer is 'Insectivore'

Ancestors of mammals belongs to

zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

  1. Therapsida

  2. Ornithischia

  3. Silusoidea

  4. Chelonia

Show answer
Correct Option: A
Explanation:

The ancestors of Mammals belong to Therapsida as there are various similarities seen in both of them which are mostly only seen in mammals.

Ornithischia is ancestors of birds.
Chelonia is the order to which turtles belong.
Some characteristics of Therapsida are:

1. Vertical limbs extending from the body.
2. Large Jaw and Heterodont teeth.
3. Presence of hair and fur in the body.
4. Body showing ability to regulate temperature.
So the correct answer is 'Therapsida'.