Which of the characters belong to Cyclostomata?
I. They are round mouthed fishes.
II. They lac k true jaws.
III. They are extint animals.
IV. They are divided into Pisces and Tetrapoda.

Which of the following are correct regarding Osteichthyes? I. They are also called bony fishes. II. They are also called bony fishes. III. They are also called cartilaginous fishes. IV. They include sharks, rays and rat fishes.

Read the following matches about chordates and it's characteristics. I. Petromyzon - belongs to cyclostomata and are endoparasites on some fishes. II. Scoliodon - a Chondrichthyes in which teeth are modified placoid scales. III. Hippocampus - a cartilaginous aquarium fish known as a sea horse. IV. lchthyophis is a limbless viviparous amphibian with direct development. Select the incorrect statements ?

Read the following matches about chordates and it's characteristics. I. Petromyzon - belongs to cyclostomata and are endoparasites on some fishes. II. Scoliodon - a Chondrichthyes in which teeth are modified placoid scales. III. Hippocampus - a cartilaginous aquarium fish known as a sea horse. IV. lchthyophis is a limbless viviparous amphibian with direct development. Select the incorrect statements ?

Choose a pair of statements true of Gymnophiona I. Skin contains minute dermal scales II. Teeth are absent on both jaws III. Vertebrae are numberous and amphicoelous. IV. Fertilization is external.

Choose a pair of statements true of Gymnophiona I. Skin contains minute dermal scales II. Teeth are absent on both jaws III. Vertebrae are numberous and amphicoelous. IV. Fertilization is external.

choss a pair of statements true of Gymnophiona I. skin contains minute dermal scales II. Teeth are absent on both jaws III. Vertebrae are numberous and amphicoelous. IV. Fertilization is external.

which of these characters does/do not apply to vascular bundle of moncot stem. I. conjoint II. Endarch protoxylem III. Open IV. Phloem parenchyma is absent.

which of these characters does/do not apply to vascular bundle of moncot stem. I. conjoint II. Endarch protoxylem III. Open IV. Phloem parenchyma is absent.

which of these characters does/do not apply to vascular bundle of moncot stem. I. conjoint II. Endarch protoxylem III. Open IV. Phloem parenchyma is absent.