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Ecdysis is shedding of...

Ecdysis is shedding of

A

stratum corneum

B

epidermis

C

dermis

D

stratum malpighi

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### Step-by-Step Solution: 1. **Understanding Ecdysis**: Ecdysis refers to the process of shedding or molting of the outer layer of skin in certain animals, particularly in reptiles and insects. 2. **Identifying the Outer Layer**: The outermost layer of the skin that is shed during ecdysis is known as the **stratum corneum**. This layer is made up of dead skin cells that provide a protective barrier. 3. **Hormonal Influence**: The process of ecdysis is regulated by hormones, specifically the **Ecdysis Triggering Hormone (ETH)**, which signals the animal to initiate the shedding process. 4. **Replacement of Skin**: After the stratum corneum is shed, it is replaced by a new skin layer called **stratum germinativum**. This new layer is responsible for the growth and regeneration of skin. 5. **Analyzing Options**: - Option 1: Stratum corneum (Correct answer) - Option 2: Epidermis and dermis (General terms for skin layers, not specific) - Option 3: Stratum malpighii (Innermost layer, not the one shed) 6. **Conclusion**: Based on the definitions and the specific layers mentioned, the correct answer to the question "Ecdysis is shedding of" is **stratum corneum**.
### Step-by-Step Solution: 1. **Understanding Ecdysis**: Ecdysis refers to the process of shedding or molting of the outer layer of skin in certain animals, particularly in reptiles and insects. 2. **Identifying the Outer Layer**: The outermost layer of the skin that is shed during ecdysis is known as the **stratum corneum**. This layer is made up of dead skin cells that provide a protective barrier. 3. **Hormonal Influence**: The process of ecdysis is regulated by hormones, specifically the **Ecdysis Triggering Hormone (ETH)**, which signals the animal to initiate the shedding process. ...
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