Aquatic and Marine Biology

In Percula clownfish, male turns into female if the breeding female dies. This guarantees that breeding female is always available.

Radiozoa have many needle-like pseudopodia.

2 classes have both marine and freshwater habitats. Only bivalves and gastropods are found in both freshwater and seawater.

Bivalves are excellent water quality biosentinels. Therefore, they were exploited in Mussel Watch Program to measure the level of contamination of water.

Pinctada margaritifera and Pinctada martensii (marine oysters) are known for their best natural pearls. They live in the tropical and subtropical waters of the Pacific Ocean.

Sea silk is produced by a large marine bivalve mollusk, Pinna nobilis.

Balanoglossus represents a connecting link between non-chordates and chordates.

The hard shell of sea animals is made of a chemical compound called calcium carbonate that protects them from mechanical injury.

In hydra, water enters and is expelled through the mouth as there is no anus

In starfish, locomotion is done by tube feet.

Flyingfish or exocoetus is a fish.

Mycena asterina is a species of agaric fungus. It grows singly or scattered on fallen leaves in Atlantic forests. The fruit bodies of the fungus are bioluminescent.

The dinoflagellates causing red tides are known as Gonyaulax, which contain a neurotoxin and are poisonous to marine fauna.

This is the correct answer. House fly, butterfly, tsetse fly: All are Insects.

The stem of water plants usually has a well-developed arenchyma.