Question

Write about Animals kingdom..
Explain it........

Answer 1

$\mathcal{ANSWER}$


$\mathsf{Kingdom\:\: Animalia:}$

$\mathsf{1. Porifera: }$

Porifera means organisms with holes. These are non-motile animals. There are holes or pores all over the body. They are covered with a hard outside layer or skeleton. They are mainly found in marine habitats. For example, Sycon, Spongilla, Euplectelea, etc.

$\mathsf{2. Coelenterata (Cnidaria):}$

These are animals living in water. There is a cavity in their body. Their body is made up of two layers of cells. For example, Hydra, Sea anemone, etc.

$\mathsf{3. Platyhelminthes:}$

Their body is bilaterally symmetrical. They are triploblastic. They do not have internal cavity in which well developed organs can be accommodated. They are either parasitic or free-living. For example, Planaria, Tape worm, Liverfluke, etc.

$\mathsf{4. Nematoda:}$

Their body is also bilaterally symmetrical and triploblastic. Their body is cylindrical. There are tissues but no real organs. For example, Ascaris, wuchereria, etc.

$\mathsf{5. Annelida:}$

They are also bilaterally symmetrical and triploblastic. They also have a body cavity. These animals are found in a variety of habitats-fresh water, marine water as well as land. For example, earthworm, leeches, etc.

$\mathsf{6. Arthropoda:}$

These animals are bilaterally symmetrical and segmented. They have open circulatory system. The coelomic cavity is filled with blood. They have jointed legs. It is probably the largest group of animals. For example, prawns, butterflies, spiders, scorpions, etc.

$\mathsf{7. Mollusca:}$

They are bilaterally symmetrical. There is little segmentation and their coelomic cavity is reduced. They have an open circulatory system. For example, snails, octopus, chiton, etc.

$\mathsf{8. Echinodermata:}$

No notochord. They are spiny skinned organisms. They are triploblastic and have a coelomic cavity. For example, starfish, sea urchin, etc.

$\mathsf{9. Protochordata:}$

They are triploblastic, bilaterally symmetrical and have a coelom. Example, herdmania, amphioxus, etc.

$\mathsf{10. Vertebrata:}$

They have a notochord, a dorsal nerve chord and have paired gill pouches. They are triploblastic and coelomate.

a) Pisces
b) Amphibia
c) Reptilia
d) Aves (Birds)
e) Mammalia

Answer 2

Heya...

Thank you...✌✌