Which of the following larvae after metamosphosis migrates from river to ocean ?

Which of the following is the larva of Petromyzon ?

Which of the following statements are "true"? Water evaporates into air from oceans,rivers and lakes but not from the soil.

Which of the following statements are 'true'? Water evaporates into air from oceans, rivers and lakes but not from the soil. ()

Which of the following statements are "true" Water evaporates into air from oceans, river and lakes but not from the soil.

Which of the following rivers originates from Madhya Pradesh ?

Which of the following are chief producers in the ocean.

A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to ocean is