Question

Enlist four main features of organism placed in (a) Platyhelminthes (b) Mammalia. ​

Answer 1

Answer:

Platyhelminthes have the following important characteristics: They are triploblastic, acoelomate, and bilaterally symmetrical. They may be free-living or parasites.

Unique Characteristics of Platyhelminthes:-

1. Presence of flame cells.

2. Ladder-like nervous system.

3. Presence of parenchyma in the body cavity.

4. Self-fertilization.

Characteristics of Mammals:-

1. The presence of hair or fur.

2. Sweat glands.

3. Glands specialized to produce milk, known as mammary glands.

4. Three middle ear bones.

5. A neocortex region in the brain, which specializes in seeing and hearing.

6.nSpecialized teeth.

7. A four-chambered heart.