Question

The locomotory organs of Echinodermata are

• A. Tube feet
• B. Muscular feet
• C. Jointed legs
• D. Parapodia

Answer 1

The correct option is A

Tube feet

The correct option is A.

Explanation of the correct option:

1. Echinodermata includes multicellular organisms with well-developed organ systems and are exclusively found only in marine environments.
2. Tube feet aid in the locomotion of echinoderms. They are small tubular projections present on the oral surface of the echinoderms.
3. They aid in the locomotion, feeding, and respiration of the organism and comprise of two parts - the ampulla and the podium.

Explanation of the incorrect option:

Option B:

The muscular foot is found in mollusks and is utilized for locomotion and anchorage to surfaces.

Option C:

Jointed limbs are present in arthropods and allow their movement.

Option D:

Parapodia refers to the lateral outgrowths from the body of invertebrates and is prominent in annelids.

Final answer: The locomotory organs of Echinodermata are tube feet.