Tag: classifications of chordata

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Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

Living fossil lizard of New Zeal and/Sphenodon belongs to___________.

  1. Rhyncocephalia

  2. Squamata

  3. Chelonia

  4. Crocodilia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Living fossil lizard of new zeal and sphenodon belongs to Rhyncocephalia. The single species of Tuatara is the only surmising member of its order, which flourished around 200 million years ago.

Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

The extinct reptiles without temporal fossae belong to ______________.

  1. Chelonia

  2. Synaptosauria

  3. Ichthyopterygia

  4. Cotylosauria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cotylosauria, often called stem reptiles, are the most primitive reptiles and are characterized by an anapsid skull, meaning they lack temporal fossae. Chelonia (turtles) also have anapsid skulls, but Cotylosauria is the broader ancestral group typically associated with this definition in evolutionary biology contexts.

Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

Vertebrae in sub-order ophidia are_______________.

  1. Procoelous

  2. Acoelous

  3. Amphicoelous

  4. Heterocoelus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The anterior middle portion of vertebrae is known as centrum and a posterior vertebral arch known as the neural arch. 
  • The procoelous vertebra is convex at the anterior side while convex at the posterior side. 
  • Ophidia is a suborder that includes snakes and reptiles and has procoelous vertebrae.
  • So option A is the correct answer
Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

Limbless amphibians belong to the order 

  1. Anura

  2. Urodela

  3. Gymnophiona

  4. Lissamphibia
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The living amphibians are divided into three subclasses:

1. Apoda( also called Gymnophiona or caecilia) - Body is long, slender wormlike without limbs and tail and with minute dermal scales.
2. Urodela(also called Caudata) - Body is long, narrow comprising head, trunk and tail, with two pairs of equal sized limbs and without scales.
3. Anura( also called Salientia) - Body is short, broad, depressed comprising head and trunk, with hindlimbs much larger than the forelimbs for leaping and without scales.
So, the correct answer is 'Gymnophiona'.

Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

Mid wife toad is 

  1. Bufo

  2. Rana

  3. Pipa

  4. Alytes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The options are all genus of different species of toad.

  • Bufo-toads of the family Bufonidae.
  • Rana-genus of holarctic toads,family-Ranidae.
  • Pipa-Star fingered toads,family-Pipidae.
  • Alytes-Mid-wife toads belonging to the family-Alytidae.
So, the correct answer is 'Alytes'.

Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

Frog/Toad belongs to order 

  1. Apoda

  2. Anura

  3. Urodela

  4. Caudata
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The order Anura includes the amphibians like the frogs and toad. The basic characteristics of Anura species are 

  • Species are four-legged and hindlimbs are longer than the forelegs which helps them to jump or leap.
  • They are external fertilizers that are the union of male and female gametes occurs outside the body of the female.
  • These species are vocal and make various noise.
So, the correct answer is 'Anura'.

Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

Salamander is a member of 

  1. Aves

  2. Amphibia

  3. Mammalia

  4. Reptilia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The characteristics of salamanders are as followed:

  • They have soft, wet skin like a frog to adapt in a wet environment.
  • They lay spawns where the tadpoles will hatch like frogs.
  • Also, they have gills, lungs for respiration in water and land respectively.
  • These are main characteristics that Amphibians show. 

Aves are birds and salamanders aren't one of them. Salamanders lay eggs so they can't be grouped under Mammalia. Reptiles have no wet skins, respiration is through lungs(absence of gills).
So, the correct answer is 'Amphibia'.