Tag: classifications of chordata

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Questions Related to classifications of chordata

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

Prosimians differ from simians in

  1. Having claws instead of nails.

  2. Having claws in some of the digits.

  3. Having shorter hind limbs

  4. Presence of tail
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Prosimians include The lemurs, lorises and tarsiers and Simians include The monkeys, apes and man.
  • Prosimians are primitive primates. They retain claws on some digits, having nails on others. The hindlimbs are longer than forelimbs. The tail may be present or lacking.
  • Simians have nails on the digits. Forelimbs are longer than the hindlimbs. The tail may or may not occur.
So, the correct answer is 'having claws in some of the digits'.

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

Birds can fly in the air because they

  1. Are small

  2. Are lighter than air

  3. Push more air behind

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The birds can lift their body and fly in the air due to the capability that the wings have the structure to push the air in the backward direction. This allows the bird to fly upward and forward by applying force and moving the air back.

Thus, the correct answer is option C. 

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

Which of the following sets of features of Echidna/Platypus makes them form a link between reptiles and mammals?

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
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. 

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

Whale Fish is a member of

  1. Reptilia

  2. Arthopoda

  3. Coelenterata

  4. Mammalia
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.

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

A non-ruminant member of artiodactyla is

  1. Camel

  2. Pig

  3. Hippopatomus

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
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".

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

Mammary glands are without teats in

  1. Prototheria

  2. Metatheria

  3. Eutheria

  4. Theria
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.

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

Mammals giving rise to immature young ones and nursing them in a pouch are

  1. Monotremes

  2. Marsupials

  3. Primates

  4. Carnivores
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.
Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

Spiny ant eater belongs to

  1. Prototheria

  2. Metatheria

  3. Eutheria-Pholidota

  4. Eutheria-Insectivora
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.

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

Kangaroo belongs to

  1. Monotremata

  2. Marsupialia

  3. Prototheria

  4. Insectivora
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.