Which one is a true fish
Which one is a true fish?
- Jellyfish
- Starfish
- Dogfish
- Silverfish
Answer
Jellyfish or jellies are approximately cylindrical vase shaped individuals of phylum-Cnidaria. These are free swimming marine animals consisting of a gelatinous umbrella shaped bell (pulsate for locomotion) and tentacles (to capture prey).
Starfish are star shaped echinoderms. These are marine invertebrates which have a central disc and five arms, tube feet for locomotion.
Scoliodon (dog fish) belongs to the class-Chondricythes, i.e., pisces. These fishes are known as dog fish due to their, ability to smell.
Lepismasacharina commonly known as silver fish is small wingless insect belongs to phylum-Arthropoda.
The correct option is C.