MCQs of Biology – Chondrichthyes

Elasmobranchii is the group that includes:

Cartilaginous fishes are generally:

Cartilaginous fishes do not have :

Pharyngeal gill – slite are found in:

Gill cover is absent in:

Which is viviparous?

A vertebrate having entire cartilaginous endoskeleton is:

Point out the cartilaginous fish from the following :

Scolidoon is commonly called dogfish due to one of its following characteristics?

Which type of scales is found on the skin of cartilaginous fishes :

Which of the following scales are similar to mammalian teeth?

Placoid scales are found in:

One of the following is absent in a placoid scale:

Endoskeleton is cartilaginous in :

Which fish has an electric organ?

Electric organs occur in:

Torpedo is commonly known as :

Electric organs of fishes are highly modified masses of:

Heart pumps impure blood in:

Which of the following animals is a fish?

Ampulla of Lorenzini in fishes is a:

Sting rays carry a poison sting on their:

‘Maltase cross’ is found in:

What is found in the intestine of a shark?

Which of the following types of fishes have heterocercal tail?

Mermaid’s purse refers to:

Presence of clasers is an important character in: