Conclusion On the topic Animal Tissue class 9th
Answers
Answer:
The animal cells are grouped together to form animal tissues. These tissues vary in their structure, function, and origin.The animal tissues are divided into epithelial, connective, muscular and nervous tissues. Let us have a glimpse of each type of animal tissue in detail.The different types of animal tissues include:
Epithelial Tissue
Epithelial tissues form the protective covering and inner lining of the body and organs. These tissues were the first to evolve during evolution and were first formed during embryonic development. They develop from the ectoderm, mesoderm and endoderm of the embryo.
Characteristics of Epithelial Tissues
Following are the important characteristics of epithelial tissues:
These can be single-layered or multi-layered.
The tissues have the power to regenerate.
These are held together by gap junctions, tight junctions, zonula adheren, desmosomes, or interdigitation.
The plasma membrane of these cells is specialized into flagella, cilia, and microvilli.
Classification of Epithelial Tissues