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Earn 100

The stratified epithelium has many layers. This epithelium is classified on the basis of
(a)Total number of layers
(b) Lowermost layer cells. shape
(c)Shape of cells in the superficial layer
(d)Shape of cells present in the middle layer

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Important Questions on Animal Tissue
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Adhering junctions along with cementing cells together facilitate the cells to communicate with each other by connecting the plasma membranes of adjoining cells.
Compound epithelium covers the moist surface of the buccal cavity, pharynx, and lining of ducts of salivary glands.
The striated muscle fibre is thin, elongated with pointed ends and multiple nuclei.
Cartilage is present at the tip of the nose and between the bodies of adjacent vertebrae.

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Tissue | Feature/Function | ||
A | Exocrine gland | I | Facilitates communication by connecting the cytoplasm of adjoining cells. |
B | Endocrine gland | II | Chemical messenger is secreted directly into the fluid connective tissue. |
C | Gap Junctions | III | Either cuboidal or columnar epithelium adapted for the secretory function. |
D | Goblet cells | IV | Secretes mucus, saliva, digestive enzyme, and other cell products. |

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Find out the wrongly matched pair
(a) | Squamous epithelium | Skin of frog |
(b) | Columnar epithelium | Peritoneum of the body cavity |
(c) | Ciliated epithelium | Bronchioles |
(d) | Stratified cuboidal epithelium | Oesophagus |
(e) | Glandular epithelium | Salivary gland. |

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By carefully studying the table, identify P, Q, R and S and select the appropriate option.
(i) | Loose connective tissue | P | Forms shock-absorbing cushion around eyeballs |
(ii) | Skeletal tissue | Hyaline cartilage | Q |
(iii) | Bones | R | Formed in soft organs, such as heart of ruminants. |
(iv) | S | Ligament | Connects bone to another bone. |
