Question

(a) What are the salient features of Porifera?
(b)
How are coral reefs formed?​

Answer 1

Answer:

Characteristic Features of Phylum Porifera

(1)They are generally marine aquatic organisms, with a few freshwater species.

(2)Their bodies are asymmetrical.

(3)Body shape can be cylindrical, vase-like, rounded or sac-like.

(4)They are diploblastic animals with two layers, the outer dermal layer and the inner gastral layer.

Coral reefs begin to form when free-swimming coral larvae attach to submerged rocks or other hard surfaces along the edges of islands or continents. As the corals grow and expand, reefs take on one of three major characteristic structures — fringing, barrier or atoll.

Answer 2

Answer:

(a) Characteristic Features of Phylum Porifera :

• They are generally marine aquatic organisms, with a few freshwater species.
• Their bodies are asymmetrical.
• Body shape can be cylindrical, vase-like, rounded or sac-like.
• They are diploblastic animals with two layers, the outer dermal layer and the inner gastral layer .

(b) Coral reefs begin to form when free-swimming coral larvae attach to submerged rocks or other hard surfaces along the edges of islands or continents. As the corals grow and expand, reefs take on one of three major characteristic structures — fringing, barrier or atoll .

Explanation:

Please Mark Me As Brainliest .