Which Statement Concerning Cleavage Is False

question 12

Multiple Choice

Which statement concerning cleavage is false?

• A) Incomplete cleavage is thought to be the ancestral condition for animal embryos.
• B) Lophotrochozoans with spiral cleavage are sometimes known as spiralians.
• C) Reptiles are characterized by incomplete cleavage.
• D) The idiosyncratic cleavage pattern of most ecdysozoans is neither radial nor spiral.
• E) Cleavage patterns can be useful for characterizing major animal groups.

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Definitions:

Clavicles

Long bones that serve as a strut between the shoulder blade and the sternum or breastbone, known as collarbones.

Tarsals

The seven bones in the foot that form the ankle and the back part of the foot arch, contributing to its structure and movement.

Phalanges

The bones of the fingers.

Metacarpals

The five long bones located in the hand between the wrist and the fingers.