Answer: Option A
Explanation:
A tunicate is marine invertebrate animal which is a part of chordates. They have notochords and dorsal nerve chord. The subphylum of the organism is called as Urochordata.
The adult urochordates lack notochord but the larval stage of the urochordates have notochord. This is because it helps in swimming of the organism which is required only at the larval stage.
The adult stage of the tunicates is sessile and they do not swim so they do not require notochord.
Answer:
subluxation.
Explanation:
Subluxation is the partial displacement of a bone from its joint.
Dislocation is complete displacement of a bone from its joint.
Luxation is complete separation of joints.
Sublocation generally return to its normal position without the help from orthopedic doctor.
Example; Nursemaid's elbow caused by subluxation of head of radius from annular ligament.
I Think The answer is a I hope it helps ya
Answer:
I believe the answer is A
Explanation:
I think it is A because the original function of the spinal cord is to complex organization of nerve cells responsible for movement and sensation. It carries signals between the brain and the rest of the body.