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Multiple Choice
During molting, what occurs in an arthropod?
A
It fuses with another arthropod to form a larger organism.
B
It undergoes photosynthesis to produce energy.
C
It divides into two identical daughter cells.
D
It sheds its old exoskeleton and forms a new, larger one.
Verified step by step guidance
1
Step 1: Understand the concept of molting in arthropods. Molting, also known as ecdysis, is a biological process where an arthropod sheds its old exoskeleton to allow for growth and development.
Step 2: Recognize that arthropods have a rigid exoskeleton made of chitin, which does not expand as the organism grows. This necessitates the shedding of the old exoskeleton.
Step 3: Learn the sequence of molting. First, the arthropod secretes enzymes to separate the old exoskeleton from the underlying epidermis. Then, a new exoskeleton begins to form underneath.
Step 4: The arthropod sheds the old exoskeleton, often splitting it along specific lines. The new exoskeleton is soft and pliable, allowing the organism to grow before it hardens.
Step 5: Understand the importance of molting. This process is crucial for growth, repair, and sometimes for transitioning to a new developmental stage, such as in insects undergoing metamorphosis.