Question

labled structure of obelia colony ​

Answer 1

Answer:

Explanation:

Obelia: Habitat, Structure and Diagram

Article Shared by  

ADVERTISEMENTS:

 

Habit and Habitat of Obelia:

Obelia is sedentary, marine colonial form found attached on the surface of sea weeds, molluscan shells, rocks and wooden piles in shallow water up to 80 metres in depth. Obelia is cosmopolitan in distribution, forming a whitish or light-brown plant-like fur in the sea; hence, the common name sea-fur is assigned to it.

Sea fur

Obelia Colony – A Gross Structure:

Each colony of Obelia consists of a horizontal thread-like root called hydrorhiza which is attached to a weed or any substratum. From hydrorhiza arises a vertical branching stem about 2.5 cm long which is known as a hydrocaulus. The hydrorhiza and hydrocaulus are hollow tubes.