MORE ABOUT TYPES OF ANIMAL KINGDOM PART-2

ANIMAL KINGDOM 

Phylum>Aschelminthes:-

• Commonly called Roundworm because their body is circular in cross-section and tapering at both and without segmentation. 
• May be free-living, aquatic, terrestrial or parasitic in plant and animals.
• Bilaterally symmetrical, triploblasticor pseudocoelomate.
• Alimentary canal is complete and different into mouth, well developed muscular pharynx, intestine and anus.
• Organ system level organisation and having tube within tube plan.
• An excretory tube remove the waste from the body cavity through excretory pores.
• Excretory system is made up of 'H- shaped' remote cell or protonefridia.
• Male and female are separate show dimorphagirm
• Fertilisation is internal and development is direct or indirect 

E.x. Ascaris (Round worm)

2. Wuchereri (filariasis worm)

3. Ancylostama (hookerworm)

Phylum> Annelida

• Animals are commonly called Annelida, as their body surface is distinctly marked into ring like segments or metameres.
• May be aquatic or terrestrial, free-living and sometime parasitic.
• Bilaterally symmetrical, triploblastic and ceoleomate and have organ system level of organisation.
• They show metameric segmentation,where body externally and internally divided into segment with serial repetitions of at least some organ.
• They have longitudinal and circular muscles which help in locomotion.
• Aquatic form (Nereis) have lateral appendages called paropodia for swimming.
• Closed circulatory system with some vessels acting as pumping hearts. 
• Nepridia are the organ of excretion or osmaregulation.
• Nerves system consists of paired ganglia connected by double ventral nerve cord.
• They may be Hermaphrodite.
• Fertilisation is internal and development is direct or indirect. 

E.X:- Nereis, Pheretoma (Earthworm) and Hirudinaria (Blood sucking leach.)

Phylum> Arthopoda

• Largest phylum of kingdom Aniamelia.
• The animals have jointed appendages Artho= jointed and poda= legs) hence called Arthopoda.
• have organ system level if organisation.
• Bilaterally symmetrical, triploblastic, segmented, ceolomate animals.
•  Body consist of Head, thorax, and abdomen and is covered by chitaneous exoskeletion.
• Respiratory organ are gills, book lungs, book gills, and tracheal hemocel.
• Circulatory system is open types, the blood hemolymph flow through hemocels.
• Nerves system consists of segmentation gengilla double ventrals nerve cord.
• Sensory organ include anteennae, eyes, statocysts or (balancing organ are present).

Note- 1) Hemocels:-  Body cavity around visra ( internal organ) contain blood. Blood flow hemocels instead of Blood vessels.

2) Hemolymph:- It is cdourless blood. ( Insert.)

• They are unisexual (diocious)- Male and female seprated.
• Fertilisation is internal and development may be direct or indirect.

Ex:-
1.Apis(Honey bee)
2.Bombyx(silkworm)
3.Laccifer(Lac insect)

Vector:-Anopheles,culled & Aedes (Mosquitoes).
Gregarious pest :-Locusta (Locust)
Living fossil:-Limulus (king crab.)

3. Hemocyanin:- Copper containing pigment present in few member (prown)

Phulylum> Mollusca

• It 8s second largest phylum.
• Molluscs are soft body animal, which are terrestrial or aquatic.
• Bilateral symmetrical, triploblastic, ceolomate animal and having organ system level of organisation.
• Body is divided into head, muscular foot. And visceral humps and is covered by calcerious shell.
• A soft spongy layer of skin  forms a mantle over the visceral hump.
• The space between the hump and the mantle called mantle cavity, which has feather like gells fo respiration and excretion. 
• Circulatory system is open type.
• Mouth contain are file like rasping organ for feeding called radial.

Study of Mollusca is Malocology and mollusc cell called colcology.

• Blood has a copper containing blue respiration pigment hemocynin.
• Excretory system included 1 to 2 pairs of sac like kidney which open into the mantle cavity.