Question

Write two charactors of following groups
1) Pteridophyta
2) Cnidaria
3) Arthropoda
4) Amphibia​

Answer 1

1) The general character of pteridophyta are as follows :

•They are seedless vascular plants.

•They are found in cool, damp, shady places through some may flourish well in sandy soil condition.

Eg= Ferns,Horsetails .

2)Cindaria share several basic characteristics .All cindarai are aquatic , mostly marine , organisms .They all have tentacles with stinging cell are called nematocysts that they use to capture food. cnidarians only have two body layers , the ectoderm and endoderm ,separated by a jelly-like layer called the mesoglea.

3)Charaterstic of Arthropoda include :

• A nervous system.
• A segmented body with a head , a thorax , and abdomen segment.

4) Charaterstic of Amphibia include :

• Their skin is smooth and slimy.

• Amphibians are vertebrates.