📖 Samacheer Kalvi · 11th TN - English Medium · Bio Zoology · Page 265question

CONTENT · Part 6

Chapter 9: Chapter 7 · Bio Zoology

loss of appetite, vomiting, hyper pigmentation of the skin are the symptoms of Addison’s disease. . BALL AND SOCKET JOINT . ADDISON’S DISEASE IV.

Identify the deficiency disease/disorder ‘D’ in the given picture/photograph and write any symptoms. Identification:  The specimen/model/picture kept for identification is the Ball and Socket joint. Identification: The picture kept for identification depicts Addison’s disease. • The first pairs of ribs are called true ribs.

• The 8th, 9th and 10th pairs of ribs do not articulate with the sternum but is joined with the 7th rib. They are called as false ribs. • The last 11th and 12th pairs of ribs are not connected with sternum. They are called as floating ribs.

XI Std Biology-Zoology Glossary MARASMUS . EXOPTHALMIC GOITRE Identification: The picture kept for identification depicts Marasmus. Identification: The picture kept for identification depicts Exopthalmic goitre. Comments: • It is a disorder due to protein deficiency in children.

• It is an acute form of protein malnutrition. • This is due to a diet with inadequate carbohydrate and protein. • Diarrhoea and emaciation are the symptoms of this disease. Comments: • The hyper function of thyroid gland results in exopthalmic goitre/gravis disease.

• It is characterized by increased BMR ( % - %) with increased pulmonary ventilation and protrusion of eye balls from the sockets (exophthalmos) • Elevated respiratory and excretory rate with increased body temperature are the general symptoms. V.  . Identify the given sample solution ‘E’ f or the presence/activity of salivary amylase/ ammonia/urea.

. Observe and write about the given ‘F’ experiment / specimen / picture. Determine Your Blind Spot / Identify the sex of cockroach . TEST FOR AMMONIA Aim : To test the presence of Ammonia in the given sample solution.

Materials Required: Test tube and holder. Solution Required: Sample solution and Nessler’s Reagent. Procedure: ) Take 2ml of the given sample solution in a clean test tube. ) Add few drops of Nessler’s reagent in the test tube containing sample solution.

) Appearance of dark yellow/brown colour confirms the presence of

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