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TNPSC - 8th Standard Science Notes - for all Competitive Exam (TNPSC/SSC/UPSC/TRB/TET/RRB)

1. How many hormones carried in the body to various parts?
Answer: By blood stream

2. Hormone produced by Testes is _____
Answer:  Testosterone 

3. Skin cancer is also called as ______
Answer: Melanoma

3. What two methods involved in cancer treatment?
Answer:  Chemotherapy and Radiotherapy 
  
4. Number of Chromosomes in  a human cell is _____
Answer:  23 Pairs

5. Types of cells in Islets of Langerhans______
Answer: Alpha and Beta Cells

6.  What is sex organ of Male and Female?
Answer:  Testes / Ovary

7.  Two diseases caused by excess production of growth hormone is _______
Answer: Gigantism and Acromegaly

8. Leukemia begins in ________
Answer:  Bone Marrow

9. The voice box is called______
Answer:  Larynx

10. The sugar metabolism in the body is controlled by ______
Answer: Insulin

11.  Exocrine glands produce ______
Answer: Enzymes

12. When  a thyroid gland enlarges it is called?
Answer: Goitre

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