Please help me fill this out: we\'re not using lab manuals...so the additional i

Question

Please help me fill this out:

we're not using lab manuals...so the additional information part can just be facts.

Thank you

Name: siology in the Chapter 29 Animal Planet Understanding the Ecdysozoans Study Chart for Ecdysozoans ond the Complete this chart using information found in your lab manual Nematoda Arthropoda Exam Symmetry or body form Support system Circulatory system Respiratory system Nervous system and special senses Digestive system Excretory system Reproductive system Additional information

Explanation / Answer

NEMATODES

- Examples - Hookworms, Roundworms

-Symmetry of Body form- Bilateral

-Support System- Skeletal system

-Circulatory System- They have no circulatory system

-Respiratory System- They have no Respiratory system.They do not respire as gases diffuses through the body cavity, they do not need such system

-Nervous System- A rear nerve ring around the area of pharynx and two pairs of lengthwise nerve cords that run down the body . Also dorsal (back) ventral (belly) nerve cords as well as set of lateral nerve cors across the body

-Digestive System- They have complete digestive system. includes components-stomodeum, intestine, proctodeum

-Excreatory System- Nitrogenous waste is excreted in the form of ammonia through the body walls. It is the most simplest system in nematodes.

- Reproductive System- They have mostly dioecious means males and female are distinctly different from each other just like humans

-Additional information- Nematodes are almost unbelievabily abundantly present on earth. They play critical ecological roles as decomposers and predators on microorganisms.

ARTHOPODA

- Examples - Spiders, Scorpions, mites

-Symmetry of Body form- Bilateral

-Support System- They are invertebrate animals. They have exoskeletons means that the skeleton is otside the insect

-Circulatory System- They have open circulatory system, where blood fills the body cavity of the animals

-Respiratory System- Respiratory system contains two organs- Book lungs and Tracheae

-Nervous System- Arthropods nervous system consists of a dorsal brain and a ventral ,ganglionated longitudinal nerve cord from which lateral nerves extend in each segments.

-Digestive System- They have complete digestive system. includes components-pharynx and esophagus to the stomach, midgut (stomach) and hindgut (anus) similar to the human digestive tract

-Excreatory System- There are 2 different type of excreatory system in anthropod. In aquatic, the end product of biochemical reactions as ammonia , which is highly toxic needs to be diluted as much as possible into water. It is eliminated through gills whereas terrestrial anthropods have developed a diff. system, the end product metabolism is uric acid which is eliminated as faeces through anus.

- Reproductive System- Both internal and external fertilization takes place. Terrestrial use internal ferilization , aquatic species use both internal an external fertilization

-Additional information- They contribute to the human food supply both directly as food, and more importantly as pollinators of crops. some species known to spread severe disease in humans, livestock etc,

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