What was an Early Selective Advantage of a Coelom in Animals? a Coelom _____

What was an Early Selective Advantage of a Coelom in Animals? a Coelom _____

A coelom is a fluid-filled space within the body of an animal that provides room for internal organs and helps to distribute body fluids. The coelom is lined with a membrane called the peritoneum, which protects the organs and helps to keep them in place. The main advantage of having a coelom is that it allows for greater mobility of the internal organs.

This enables animals to move more easily and efficiently, as well as increasing their ability to respire and digest food. Additionally, the coelom provides a supportive environment for developing embryos.

A coelom is a fluid-filled cavity within the bodies of some animals that provides structural support and protects organs. This type of body cavity is found in most animals with bilateral symmetry (meaning they have a left and right side that are mirror images of each other). The earliest evidence of a coelom dates back to the Cambrian period when animals with this type of body cavity first appeared on Earth.

Coeloms may have arisen as a way to provide structural support for large, complex animal bodies. They may also have offered protection for delicate internal organs by cushioning them from impacts and helping to prevent tissue damage. While the exact selective advantage of a coelom is still debated by scientists, it’s clear that this type of body cavity has been an important evolutionary innovation in the history of Animalia.

Why was the Evolution of a Coelom a Critically Important Innovation for Animals?

The evolution of a Coelom was a critically important innovation for animals because it allowed for the development of internal organs. Without a coelom, these organs would have nowhere to develop and function properly. The coelom also provides a space for fluid exchange and circulation, which is essential for many bodily functions.

Additionally, the coelom allows animals to move more freely and efficiently through their environment.

What is the Advantage of a Coelom? A There is a Body Cavity C the Organs are Not Attached to the Body Wall B the Organs are Better Protected D All of the Above?

A coelom is a fluid-filled body cavity that separates the internal organs from the body wall. This provides several advantages, including 

  • The organs are better protected.
  • The organs can move more easily and independently of each other. 
  • There is greater efficiency in exchanging materials between the blood and tissues (e.g., nutrients and wastes).

What Distinguishes a Coelomate Animal from a Pseudocoelomate Animal is That Coelomates Quizlet?

A coelomate animal is an animal that has a true body cavity, while a pseudocoelomate does not. The main difference between the two is that coelomates have a complete and enclosed body cavity, while pseudocoelomates do not. This means that coelomates can better protect their internal organs from the outside environment.

Pseudocoelomates, on the other hand, are at a greater risk for infection and injury since their internal organs are not as well protected.

Which of the Following Characteristics is Unique to Animals Quizlet?

There are a variety of characteristics that are unique to animals, Quizlet. These include the ability to move, breathe, reproduce, and eat. Animals also have senses, such as sight and hearing, which allow them to interact with their environment.

Additionally, animals exhibit various behaviors, such as mating and caring for the young.

The Primary Difference between a Coelom And a Pseudocoelom is

There are numerous differences between a coelom and a pseudocolor, but the primary difference is that a coelom is lined with epithelial tissue, while a pseudocolor is not. This means that a coelom provides a space in which organs can develop and function independently of the body cavity, while a pseudocolor does not.

This distinction is important because it allows for greater complexity in animals with a coelom, as they can have more specialized organs. Additionally, the presence of a coelom provides additional support and protection for these organs.

A Student Encounters an Animal Embryo

As a student, you may be asked to dissect an animal embryo as part of your biology class. This can be an exciting and educational experience! Here are some things you should know before you begin:

  • Make sure you have the proper supplies. You will need gloves, a sharp knife, and a dissecting tray.
  • It is important to be gentle when handling the embryo. Be careful not to damage it in any way. 
  • Take your time when dissecting the embryo. Explore all of its parts and try to identify each one.
  • Ask your teacher or another student for help if you’re having trouble understanding what you’re seeing.
  • Dissecting an embryo is a great way to learn about animal development and gain a better understanding of how creatures grow from tiny beginnings into fully-formed beings!

An Organism That Exhibits a Head With Sensory Equipment And a Brain Probably Also

Most animals have a head with some sort of sensory equipment, including eyes, ears, and a nose. These organs allow the animal to gather information about its surroundings. A brain is also necessary for processing this information and making decisions about what to do next.

Animals with a head and a brain are able to think and react to their environment in complex ways. This allows them to learn from experience, solve problems, and remember important information. This type of intelligence is necessary for survival in many environments.

An Organism That Exhibits Cephalization Probably Also _____

Cephalization is the concentration of an organism’s sense organs, nervous system, and other control systems in its head. Organisms that exhibit cephalization probably also have a brain. The brain is an organ that controls an animal’s thoughts, movements, and sensations.

It allows the animal to process information about its environment and make decisions about how to respond. The advantages of having a brain are numerous. For example, a brain can help an animal to avoid predators or find food.

It can also enable the animal to mate successfully and care for its young. There are some disadvantages to having a brain, too. Brains require a lot of energy to function properly, so they can be a liability in times of scarce resources.

They can also make animals more vulnerable to injury or disease.

Which of the Following Would You Classify As Something Other Than an Animal?

Are you wondering which of the following would you classify as something other than an animal? Well, let’s take a look. Invertebrates are animals that do not have a backbone or spinal column.

This includes animals such as worms, insects, and crabs. Vertebrates are animals that have a backbone or spinal column. This includes animals such as fish, reptiles, amphibians, birds, and mammals.

So, based on this information, we can see that invertebrates are not classified as animals.

The Last Common Ancestor of All Animals was Probably a

The Last Common Ancestor of All Animals was Probably a. The last common ancestor (LCA) of all animals was probably a small, unassuming creature that lived some 600 million years ago. This ancient organism was likely the size of a grain of rice and had a simple body plan consisting of just a few cell types.

Nevertheless, this humble ancestor gave rise to the immense diversity of animal life that exists today. Though we may never know for sure what the LCA looked like or exactly how it lived, scientists have been able to piece together some clues about this important ancestor by studying the genomes of modern animals. Based on these genomic studies, researchers believe that the LCA was probably a eukaryote—an organism with complex cells that contain specialized organelles like mitochondria.

The LCA was also likely aquatic, as most early animals were thought to have arisen in the sea. Interestingly, despite its simplicity, the LCA is thought to have already possessed some key characteristics that would later become hallmarks of more complex animals. For instance, the LCA is believed to have had genes for making proteins called actin and myosin—molecules that are essential for muscle contraction and movement.

Additionally, the LCA is thought to have had certain developmental genes that allow animals to build bodies with distinct head and tail regions—a feature known as cephalization.

Among Protostomes, Which Morphological Trait Has Shown the Most Variation?

There are a variety of different morphological traits that can be found among protostomes. However, one trait, in particular, has shown a great deal of variation. This trait is the number of cilia present in the body.

Cilia are small, hairlike structures that protrude from the surface of cells. They are used for a variety of purposes, including movement and sensing the environment. In some protostomes, cilia are present all over the body, while in others, they may only be found in certain regions.

The number of cilia present in a protostome’s body can vary greatly from one individual to the next. Some protostomes may have hundreds or even thousands of cilia, while others may have none at all. This variation is thought to be due to differences in genetic makeup and environmental factors.

At Which Developmental Stage Should One Be Able to First Distinguishes a Protostome Embryo

Most biologists believe that the earliest stage at which one can meaningfully distinguish between a protostome and deuterostome embryo is the blastula stage. This is because, at this point in development, the two groups of animals start to diverge in their methods of gastrulation. Protostomes undergo a process called an invagination, where the cells of the embryo start to move inward, forming a hollow ball.

Deuterostomes, on the other hand, undergo a process called gastrulation by epiboly, where a layer of cells starts to move over the top of the embryo. These different processes lead to different fates for the cells in each group – protostomes end up with distinct head and tail regions while deuterostomes do not – so it’s easy to tell them apart at this stage. Of course, there are always exceptions to any rule.

Some protostomes (like members of the phylum Rotifera) don’t undergo invagination during gastrulation; instead, they simply pinch off a piece of their blastula from which their heads will develop. So if you’re looking at an embryo and trying to decide whether it’s a protostome or deuterostome, your best bet is to wait until gastrulation starts and see how it proceeds.


A coelom is a fluid-filled space in the body of an animal that provides room for internal organs and other tissues. This type of cavity is found in animals with segmented bodies, such as annelids and arthropods. A coelom gives these animals several advantages over those without one, such as increased strength and flexibility, improved circulation, and protection from predators.