Which of the following groups of animals lacks cephalization?
Question 4 options:
Arthropods
Cnidarians
Roundworms
Annelids
Yes. They have extensive cephalization. They have a brain and eyes.
Earthworms demonstrate cephalization through the concentration of nerve tissues and sensory organs at their anterior (front) end. This adaptation allows them to respond more effectively to their environment, as the head region contains a simple brain and sensory structures, facilitating navigation and interaction with their surroundings. While earthworms lack a defined head like more complex animals, their body plan reflects an early form of cephalization that enhances their ability to sense and react to stimuli.
The lack of cephalization in sea stars is not a disadvantage because they possess decentralized nerve nets that allow them to coordinate movement and respond to their environment effectively. Their radial symmetry also aids in this coordination. Additionally, their specialized tube feet help them to navigate and capture prey without the need for centralized brain control.
The common name for N-methylethanamine is dimethylamine.
Animals go extinct for numerous reasons. Common reasons animals die out are lack of habitat, over hunting, and changes in food or water sources.
Disease, poisonous animals, unclean water, lack of food. It depends on what part of Africa though.
Subregnum: ParazoaPhylum: PoriferaSubregnum: AgnotozoaSuperphylum: RadiataPhylum: BrachiopodaPhylum: BryozoaPhylum: DicyemidaPhylum: EntoproctaPhylum: Gastrotricha
Snakes and fish are examples of animals that lack external ears.
lack of common sense..
There are quite a few animals that contain tissues but lack complex organs. One of these animals is the jellyfish.
In Hindu mythology names are often singular. They lack surnames, or the cities from which they hail, as is common in many Western traditions.
The two broadest classes of cells are prokaryotic cells (bacteria and archea), which lack a nucleus, and eukaryotic cells (animals, plants, fungi, and protists) which posses a nucleus and other membrane-bound organelles.