Question

3 multiple choice 10 points
which part of your brain is referred to as the gateway to the cerebrum because it controls the access for incoming signals to be sent to the cerebrum?
○ medulla oblongatta
○ thalamus
○ cerebellum
○ occipital lobe

4 multiple choice 10 points
what type of symmetry is seen in a planarian flatworm (like in platyhelminthes)?
○ radial
○ pentaradial
○ bilateral
○ trilateral

Explanation:

Question 3

The thalamus acts as a relay station, controlling incoming signals to the cerebrum. Medulla oblongata controls vital functions, cerebellum coordinates movement, and occipital lobe processes vision. So the correct option is Thalamus.

Planarian flatworms (Platyhelminthes) exhibit bilateral symmetry, meaning they can be divided into two mirror - image halves along a central axis. Radial symmetry is for organisms like jellyfish, pentaradial for echinoderms, and trilateral is not typical for flatworms.

Answer:

B. Thalamus (assuming the options are labeled with letters, if not, the option with "Thalamus")

Question 4