Which of the following is / are applicable to Starfish?
1. They are true fishes
2. They have two stomachs
3. They are found in large freshwater lakes as well as oceans
4. They have capability to regenerate the lost arm
Select the correct option from the codes given below:
Starfish are also known as sea stars and are not really fish despite the name been given to them. These are echinoderms, which are found abundant in the deep blue seas and shallow waters as well. The characteristic feature of the starfish is the 5 (or even more) arms. The surface of these arms is often spiky in appearance. An interesting fact about the starfish is that it has two stomachs.
The cardiac stomach can help the starfish to engulf food outside its body. When the cardiac stomach comes back into the body, the food in it is transferred to the pyloric stomach. Starfish are found in all the oceans around the world. A large variety of the same is seen in the tropical area of the Indo-Pacific. These also live in the coral reefs and seabed that are really at great depths. Starfish are never found in freshwater. In case a starfish loses its arm, it is capable of regenerating the same.
This question is a part of GKToday's Integrated IAS General Studies Module