Answer:
Cephalopods
Explanation:
Cephalopods are mollusk of the class Cephalopoda, which includes squid, cuttlefish, octopus, nautiloids etc. Cephalopods are invertebrate marine animals that possess streamlined soft bodies, a large head and eyes, and numerous feet (called arms or tentacles) which is about eight or ten in most forms but about 90 in Nautilus. There are several species (about 800) of Cephalopods. Cephalopods have a more oxygen-efficient closed circulatory system, and they are well-adapted to fast swimming in the pelagic zone of the ocean.
Answer:
d. Synarthrotic joints
Explanation: is correct for the choices offered.
The Polio virus usually enters the environment in the feces of someone who is infected
Polio spreads from muscle to the central nervous system by neutral pathways
Answer:
The process shown in the model requires energy from the cell.
Explanation:
Active transport refers to the movement of materials across the cell membrane against concentration gradient.
The cell membrane remains intact. However, energy is required from within the cell to move materials into the cell against concentration gradient, hence the answer.
