Pelvic claspers are found in
The male sharks have grooved organs that are used to deposit sperm into the genital duct of sexually receptive female sharks. These organs, called as 'claspers', are developed along the inner margin of each pelvic fin. Scoliodon is the shark and hence it possesses claspers. So, the correct answer is option B.
Match the following columns and select the correct option. Column - I Column - II (a) 6-15 pairs of gill slits (i) Trygon (b) Heterocercal caudal fin (ii) Cyclostomes (c) Air Bladder (iii) Chondrichthyes (d) Poison sting (iv) Osteichthyes
Which of the following is/are not the characteristics of the class Osteichthyes? (i) The body is streamlined and mouth is terminal. (ii) Gills are covered by an operculum. (iii) Skin covered with cycloid and placoid scales. (iv) Many of them are viviparous.
Which of the following is a correct match?
Which one of the following categories of animals, is correctly described with no single exception in it?
Hippocampus is called as 'sea horse', becuase