Exoskeleton
A)an ocean invertebrate having spiny skin
B)an invertebrate animal that has tentacles around its mouth
C)an outer covering that supports the soft inner tissues in an arthropod
D)an invertebrate animal with jointed legs and an exoskeleton
E)an animal having no backbone
C)an outer covering that supports the soft inner tissues in an arthropod.
Mandible
A)a layer of skin-like material that in many animals can produce a shell
B)not moving from place to place; attached in a permanent location
C)mouth parts that work as jaws
D)a section or part of an animal's body
E)a long appendage around the head of an animal used for holding or moving
C)mouth parts that work as jaws.
The correct answer is C) an outer covering that supports the soft inner tissues in an arthropod.
To arrive at this answer, let's break down the options and eliminate the ones that are not accurate:
A) An ocean invertebrate with spiny skin: This option describes a specific characteristic of an ocean invertebrate, but it does not define an exoskeleton.
B) An invertebrate animal that has tentacles around its mouth: This option describes a different type of invertebrate animal, specifically one with tentacles. It does not define an exoskeleton either.
D) An invertebrate animal with jointed legs and an exoskeleton: This option accurately describes a type of invertebrate animal with both jointed legs and an exoskeleton, making it a potential correct answer.
E) An animal having no backbone: This option describes an animal without a backbone, which is true for invertebrate animals but does not specifically define an exoskeleton.
Now, let's consider option C) - an outer covering that supports the soft inner tissues in an arthropod. This option accurately defines an exoskeleton. Arthropods, such as insects, spiders, and crustaceans, have an exoskeleton, which serves as their outer covering providing support and protection for their soft inner tissues.
Therefore, option C) is the correct answer.