Nudibranchs, a Type of Predatory Sea Slug, Can Have Various

question 53

Multiple Choice

Nudibranchs, a type of predatory sea slug, can have various protuberances (i.e., extensions) on their dorsal surfaces. Rhinophores are paired structures, located close to the head, which bear many chemoreceptors. Dorsal plummules, usually located posteriorly, perform respiratory gas exchange. Cerata usually cover much of the dorsal surface and contain nematocysts at their tips.
-The spines of sea stars have a function most similar to that of

• A) rhinophores.
• B) dorsal plummules.
• C) cerata.
• D) more than one of these.

Describe the adaptive significance of various leaf modifications in different environmental conditions.

Understand the mechanisms and effects of transpiration on plant water relations.

Explain the physiological and biochemical changes associated with leaf abscission.

Identify the role of different plant organs in nutrient and water storage, transport, and absorption.

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