Characteristic features of phylum arthropoda, Biology

Characteristic Features of Phylum Arthropoda

  1. Well-developed muscular system along with striated muscles attached to the exoskeleton, and visceral organs having smooth muscles.
  2. Segments take jointed appendages.
  3. Coelom present but extremely reduced and obliterated in the adult. The main body cavity is haemocoel, a characteristic space among organs and tissues, filled with blood.,
  4. Nonexistence of cilia.
  5. Exoskeleton contains a tough cuticle made up of chitin, protein and lipid, sometimes strengthened with calcium carbonate. The cuticle, secreted by the underlying epidermis, is shed periodically to allow growth of body.
  6. Circulatory system that is open type.
  7. Body bilaterally symmetrical and metamerically segmented; segments show a tendency to combine or fuse together to form functional units called tagmata, such as cephalothorax and abdomen, head and trunk, or head, thorax and abdomen.
  8. Mouth parts changed from appendages; well developed alimentary canal.
  9. Respiratory organs are generally tracheae, booklungs or gills.
  10. Sexes are separate; fertilization internal; development often involves metamorphosis.
  11. Nervous system is of the annelidan plan.
  12. Excretory organs Malpighian tubules, coxal glands, antennal glands or maxillary glands.
Posted Date: 2/2/2013 12:39:04 AM | Location : United States







Related Discussions:- Characteristic features of phylum arthropoda, Assignment Help, Ask Question on Characteristic features of phylum arthropoda, Get Answer, Expert's Help, Characteristic features of phylum arthropoda Discussions

Write discussion on Characteristic features of phylum arthropoda
Your posts are moderated
Related Questions
HIND ARM OR LEG BONES - Each leg contain 30 bones as : femur in thigh, patella in knee, tibia & fibula in the lower leg, 7 tarsals in ankle, 5 metatorsles in the sole

Explain the Advantages of Shaking Water Baths? The advantages of using shaking water baths are: (a) Uniform and rapid transfer of heat to the culture can be obtained, and

Q. Number of risk factors of gout? A number of risk factors are related to the development of hyperuricemia and gout. These factors include: • Hereditary: Genetics may play

Explain root pressure? How can you demonstrate it experimentally? What is the cytological basis of Down's syndrome? Give two physical symptoms of this disorder. Describe why the

Explain the Faecal Coliforms - Microbiological Study of Water? The faecal coliforms include a wide range of bacteria, many of which are not primarily the intestinal bacteria. T

What are analogies for a nucleolus? If the nucleolus is the president of a factory then the nucleolus is the manager

Growth Phase -Stages in spermatogenesis Growth phase is characterized by the acquisition of the structural and functional characteristics of distinct sex cells. Also here is a

Determine the Fluids and Electrolyte Requirement at high Altitude? In addition to cold induced diuresis, hyperventilation together with a dry environment at HA makes an individ

POSSIBLE ERRORS IN DRUG ADMINISTRATION There can be various reasons for error in administering drugs: i) Poor communication of intention by the prescriber. ii) Failur

Q. What is ST Heart Rate Index? To calculate the index, the maximum ST depression is divided by the Delta heart rate (difference between the resting and maximum heart rate). As