Defining characteristics of Nematodes
-complete digestive system- tube within a tube body plan
-triploblastic
-a pseudocoelom between mesoderm and endoderm
-bilateral symmetry
-little cephalization
-sexual dominant reproduction
-body covered with a cuticle
-nervous system
-no circulatory system
-multicellular
-heterotrophic
-complete digestive system- tube within a tube body plan
-triploblastic
-a pseudocoelom between mesoderm and endoderm
-bilateral symmetry
-little cephalization
-sexual dominant reproduction
-body covered with a cuticle
-nervous system
-no circulatory system
-multicellular
-heterotrophic
Nematoda Lab
Results:
Results:
Analysis:
1. Vertically.
2. The nervous chord forms the lateral line.
3. No, there are no need for them.
4. -no cephalization (sense organs); due to simply not needing them
-body made only for reproduction and digesting food
5.-infected, unwashed fruits and vegetables are ingested by it's host (human)
-the larvae travel to the intestines where they absorb nutrients and grow bigger
-when adults, the larvae release egg and sperm and the the fertilized eggs exit our bodies through our feces
-the feces land on the ground, infecting more fruit and vegetables to soon be ingested
6.-lives in intestine
-has human hosts
-parasitic
-no sensory organs
-gains nutrients by living in our small intestines
-have only a reproductive and digestive system
7.-the larvae penetrate the skin on your foot
-the larvae release a liquid causing your foot to itch, making you scratch it
-when you scratch, you get tiny cuts, and the larvae are able to swim up into your circulatory system
-they travel through the bloodstream to your respiratory system
-they irritate your lungs; causing you to cough them up, only to swallow them back down
-after swallowing, the larvae now travel through your digestive system and latch on to your small intestine
-the larvae drink blood and absorb nutrients and continue to grow
-when fully grown, the worms release eggs and sperm
-the fertilized eggs exit through feces, and the cycle starts again
8.-it enters from eating undercooked pork
-invades muscles; contrary to infecting the intestines
-results in sore muscles and cysts
-has the same lack of sensory organs, like the ascaris and necator
9. It can be prevented by fully cooking your pork.
10. The pseudocoelom is located between the mesoderm and the endoderm.
11. The reproductive system and organs and the reproductive system and organs are located within the pseudocoelom.
12.-they are parasitic (they infect a host to survive) whereas the free living nematodes find food on their own
-they have no sensory organs (the free living nematodes have eye spots and auricles)
13. Advantages:
-they don't have to find their own food
-they can focus primarily on digesting nutrients and reproducing
Disadvantages:
-the worm will die if it is unable to find a host due to having no sensory organs
-it solely relies on its host; if something is wrong with the host, the worm is at great risk
-if in a human, the worm will often be killed through vaccinations or other methods
14.
1. Vertically.
2. The nervous chord forms the lateral line.
3. No, there are no need for them.
4. -no cephalization (sense organs); due to simply not needing them
-body made only for reproduction and digesting food
5.-infected, unwashed fruits and vegetables are ingested by it's host (human)
-the larvae travel to the intestines where they absorb nutrients and grow bigger
-when adults, the larvae release egg and sperm and the the fertilized eggs exit our bodies through our feces
-the feces land on the ground, infecting more fruit and vegetables to soon be ingested
6.-lives in intestine
-has human hosts
-parasitic
-no sensory organs
-gains nutrients by living in our small intestines
-have only a reproductive and digestive system
7.-the larvae penetrate the skin on your foot
-the larvae release a liquid causing your foot to itch, making you scratch it
-when you scratch, you get tiny cuts, and the larvae are able to swim up into your circulatory system
-they travel through the bloodstream to your respiratory system
-they irritate your lungs; causing you to cough them up, only to swallow them back down
-after swallowing, the larvae now travel through your digestive system and latch on to your small intestine
-the larvae drink blood and absorb nutrients and continue to grow
-when fully grown, the worms release eggs and sperm
-the fertilized eggs exit through feces, and the cycle starts again
8.-it enters from eating undercooked pork
-invades muscles; contrary to infecting the intestines
-results in sore muscles and cysts
-has the same lack of sensory organs, like the ascaris and necator
9. It can be prevented by fully cooking your pork.
10. The pseudocoelom is located between the mesoderm and the endoderm.
11. The reproductive system and organs and the reproductive system and organs are located within the pseudocoelom.
12.-they are parasitic (they infect a host to survive) whereas the free living nematodes find food on their own
-they have no sensory organs (the free living nematodes have eye spots and auricles)
13. Advantages:
-they don't have to find their own food
-they can focus primarily on digesting nutrients and reproducing
Disadvantages:
-the worm will die if it is unable to find a host due to having no sensory organs
-it solely relies on its host; if something is wrong with the host, the worm is at great risk
-if in a human, the worm will often be killed through vaccinations or other methods
14.