A) Hydra
B) Star fish
C) earthworm
D) Ascaris
Correct Answer: D
Solution :
The epidermis of adult Ascaris has no separate cells. It is continuous layer of cytoplasm with scattered nuclei i.e., a syncytial or coenocytic layer. The epidermis of earthworm is an epithelium of tall, columnar cells (supporting cells, glandular cells, basal cells, sensory cells). The skin (body layer) of star-fish has a mesodermal endoskeleton of separate dermal ossicles in the form of spines, tubercles, rods, cones or plates. The epidermis of Hydra contains six type of cells [a] Epitheliomuscular cells [b] Gland- ulomuscular cells [c] Sensory cells [d] Nerve cells [e] Interstitial cells [f] Stinging cells.
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