Final answer:
The Tectum Plate is another name for the Quadrigeminal or Tectal plate. The third ventricle is the portion of the ventricular system found within the diencephalon.
Step-by-step explanation:
The other name for the Quadrigeminal plate or Tectal plate is d) Tectum Plate. The Tectum is a part of the midbrain and comprises four rounded eminences. As it's involved in visual and auditory reflexes, it's important within the vertebrate neural system. As for the ventricular system within the diencephalon, the correct answer is b) third ventricle. The third ventricle is a narrow, vertical cavity in the midline, between the two halves of the diencephalon.