Animals that can control the direction they move in all have
A. a home in the ocean.
B. development as a deuterostome.
C. muscles.
D. radial symmetry.
Answer (2)
Animals with development characterized by radial cleavage and enterocoely are classified as deuterostomes, which includes phyla such as chordates and echinoderms. This developmental pattern is distinct from protostomes and implicates specific symmetry and germ layer formations in animals.
The question pertains to the development of animals and the characteristics associated with certain development patterns. Animals whose development is marked by radial cleavage and enterocoely are classified as deuterostomes. This developmental pattern involves a specific type of cell division and method of coelom formation that is seen in certain animal phyla, such as chordates and echinoderms. Unlike protostomes, in deuterostomes, the first opening (the blastopore) becomes the anus, and the mouth forms secondarily. It's also important to understand the distinction between radial and bilateral symmetry in animals. Animals like jellyfish exhibit radial symmetry, whereas animals like butterflies display bilateral symmetry. Additionally, animals with radial symmetry are generally diploblasts, meaning they develop from two germ layers: the endoderm and ectoderm, while animals with bilateral symmetry are triploblasts and develop from three germ layers, adding the mesoderm.
Animals that can control their movement primarily have muscles, which are crucial for coordinated movement. While other options mention features like symmetry or developmental pathways, they do not directly correlate with the ability to control direction of movement. Therefore, the correct answer is C. muscles.
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