The epitheliomuscular cells found in cnidarians anticipate the muscular system of more complexanimals. The absence of muscle tissue in cnidarians primarily reflects...A. The fact that cnidarians are basal metazoans, having specialised cells but lacking tissuesB. The presence of only two germ layers, ectoderm and endoderm, in cnidarian embryosC. The fact that cnidarians lack a nervous systemD. The sessile lifestyle observed in all cnidariansE. All of the above explain the absence of muscle tissue in cnidarians

The correct answer is option B: The presence of only two germ layers.

Answered: The absence of muscle tissue in…

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Biology

The absence of muscle tissue in cnidarians primarily reflects...

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter30: An Introduction To Animal Diversity

Section: Chapter Questions

Problem 7TYU

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Concept explainers

Classification of Marine Organisms

Classification is a way of categorizing organisms that enables an easy process of identification of such organisms. All living things are classified by grouping them under specific categories. The grouping is done based on the close relativeness of the organisms. The classification tool requires knowledge of characteristics, differences, and similarities between different organisms.

Question

The epitheliomuscular cells found in cnidarians anticipate the muscular system of more complex
animals. The absence of muscle tissue in cnidarians primarily reflects...
A. The fact that cnidarians are basal metazoans, having specialised cells but lacking tissues
B. The presence of only two germ layers, ectoderm and endoderm, in cnidarian embryos
C. The fact that cnidarians lack a nervous system
D. The sessile lifestyle observed in all cnidarians
E. All of the above explain the absence of muscle tissue in cnidarians

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