What are the significance of an animal's having two separate opening to the digestive tract as seen in Ascaris?

1. What is the significance of having two separate openings to the digestive tract as seen in Ascaris?
2. How many digestive tract openings are present do mammals have a tube within a tube?
3. Why is it advantageous for a predator such as a planarian to have bilateral symmetry and a definite head region?
4. What symmetry does a fetal pig have?
5. Why is a digestive system with two openings more efficient?
6. Why is the digestive system of some animals referred to as incomplete?
7. Why nematode are called tube within a tube?
8. Which two organisms have a tube within a tube body plan?
9. What is a tube within a tube digestive system?
10. What animals have cephalization?
11. What is the advantage of a Gastrovascular cavity that Ramifies?
12. What are the advantages of having a bilaterally symmetrical body?
13. What is the digestive system of a pig?
14. Do fetal pigs have tails?

What is the significance of having two separate openings to the digestive tract as seen in Ascaris?

Discuss the significance of an animal's having two separate openings to the digestive tract, as seen in Ascaris? two separate openings prevents food and waste products from mixing in the digestive tract. Also allows for specialized regions in the abdomen.

How many digestive tract openings are present do mammals have a tube within a tube?

This plan calls for two openings: one for food to enter the body (mouth), one for wastes to leave the body (anus). The tube-within-a-tube plan allows specialization of parts along the tube, such as a stomach, intestine, etc. The sac-like body plan has only one opening for both food intake and waste removal.

Why is it advantageous for a predator such as a planarian to have bilateral symmetry and a definite head region?

Why is it advantageous for a predator such as a planarian to have bilateral symmetry and a definite head region? Planarian obtain food, have a remarkable ability to regenerate their bodies wen cut into small pieces. ... The foot has a variety of functions such as locomotion, attachment, or food capture.

What symmetry does a fetal pig have?

The fetal pig would have bilateral symmetry that has left and right halves that are mirror images of one another.

Why is a digestive system with two openings more efficient?

Digestive tracts with two openings also make digestion more efficient, since they provide different sites with different physical and chemical conditions (mouth, stomach, bowels) for the action of different complementary digestive enzyme systems.

Why is the digestive system of some animals referred to as incomplete?

In summary, the digestive system is a series or organs or cells that break down food into small, usable nutrients for animals. Incomplete digestive systems only have one opening for food intake and waste removal. These systems are more primitive and exist in lower animal species, like jellyfish and sea sponges.

Why nematode are called tube within a tube?

Nematodes have been characterized as a tube within a tube ; referring to the alimentary canal which extends from the mouth on the anterior end, to the anus located near the tail. Nematodes possess digestive, nervous, excretory, and reproductive systems, but lack a discrete circulatory or respiratory system.

Which two organisms have a tube within a tube body plan?

The tube-within-tube body plan involves two tubes or openings from one food entering (mouth) and from another, the wastes are excreted outside the body (anus). Additional Information: -A Tube-within-tube body plan is generally found in higher animal groups from nematodes to chordates.

What is a tube within a tube digestive system?

The gastrointestinal (GI, digestive) tract, the passage through which our food travels, is a “tube within a tube.” The trunk of our body is the outer tube and the GI tract is the interior tube, as shown below.

What animals have cephalization?

Examples of Cephalization in Animals

Vertebrates, arthropods, and cephalopod molluscs are three groups of animals with a high degree of cephalization. Humans, snakes, and birds are examples of vertebrates. Lobsters, ants, and spiders are examples of arthropods.

What is the advantage of a Gastrovascular cavity that Ramifies?

What is the advantage of a gastrovascular cavity that ramifies throughout the body? Higher surface area for the distribution/absorption of nutrients.

What are the advantages of having a bilaterally symmetrical body?

The advantages of bilateral symmetry include the formation of a head and tail region, where the head region can house a detailed nervous system, and more directional movement to include the ability to move straight forward.

What is the digestive system of a pig?

Both swine and humans are omnivores. Carnivores and omnivores possess a simple monogastric digestive system. Dogs, cats, reptiles, fish, and pigs all share this most-simple of digestive systems. In a monogastric digestive system, food is chewed, swallowed, and enters a low-pH stomach where protein disassembly begins.

Do fetal pigs have tails?

1-umbilical cord; 2-mammary papillae; 3-urogenital opening; 4-anus; 5-tail; 6-scrotal sac 1-umbilical cord; 2-mammary papillae; 3-genital papilla & urogenital opening; 4-tail Page 11 Some structures will be the same for both males and females. Under the tail, they both have an anus.