Mark the odd one in each series: (a) Areolar tissue; blood; neuron; tendon (b) RBC; WBC; platelets; cartilage (c) Exocrine; endocrine; salivary gland; ligament (d) Maxilla; mandible; labrum; antennae (e) Prothorax; mesothorax; metathorax; coxa | NCERT solution | Class 11 Biology | Unit-7 Structural Organisation in Animals



Q.10:- Mark the odd one in each series:
(a) Areolar tissue; blood; neuron; tendon
(b) RBC; WBC; platelets; cartilage
(c) Exocrine; endocrine; salivary gland; ligament
(d) Maxilla; mandible; labrum; antennae
(e) Prothorax; mesothorax; metathorax; coxa

 

Answer:-



(a)Simple epithelium is composed of one layer of cells, while compound epithelium is composed of more than one layer of cells.
(b)Cardiac muscles are present in the heart, while striated muscles are present in articulatory joints. Cardiac muscle fibres are branched, while striated muscle fibres are unbranched. Cardiac muscles continuously contract and relax throughout the life, while striated muscles show movement as and when required.
(c)The cells and fibres are loosely arranged in a semi-fluid matrix; in loose connective tissue. The cells and fibres are compactly packed in dense connective tissue. Areolar tissue is an example of loose connective tissue, while tendon and ligament are examples of dense connective tissue.
(d)Adipose tissue is an example of loose connective tissue, while blood tissue is a specialized connective tissue. Adipose tissue is usually located beneath the skin. The cells of the adipose tissue are specialized to store fat. Blood facilitates transportation of various materials in the body.
(e)Simple gland is composed of single cell, while compound gland is composed of multiple cells.