Test: Protective Tissues In Animals

5 Questions MCQ Test Science Class 9 | Test: Protective Tissues In Animals

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The function of secretion is shown by both, ________ and _________ epithelium.

Solution: Columnar epithelium is located in thyroid vesicles , gonads eg. ovaries and testes and sweat and salivary gland thus secreting thyroxine , estrogen , sweat and saliva so performing secretion and glandular epithelium is located in intestine secreting mucous it is the modified form of columnar epithelium thus secreting some of its products also so both perform secretion.

In goitre, the thyroid gland enlarges and results in swelling in the throat region. Which epithelial tissue is involved in this condition?


Name the region where epithelial tissue is not found.


The skin of frogs is smooth and moist, while that of lizards is dry and scaly. However, in both the cases, the skin is made up of same epithelial tissue. Which is this tissue?

Solution: Squamous Epithelium – These are thin, flat cells that are closely packed. The squamous epithelial cells line the cavities of the mouth, oesophagus, alveoli, and blood vessels. This tissue gives protection against mechanical injury and also blocks the entry of germs. If the squamous epithelium is arranged in many layers, it is a compound squamous tissue called the stratified squamous epithelium. We find these kinds of tissues in the skin and also the lining of the oesophagus.

Which of the following is not a characteristic of epithelial tissue?

Solution: It is so because it is present in epithelial tissue just under the epithelium and if it would not be present then there would be no one to anchor down the epithelium and also there would be absence of mechanical barrier.