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Which of the following statements are true about the endocrine glands?(i) They are ductless glands.(ii) They release their hormones into a duct.(iii) They produce chemical messengers called hormones.(iv) They release their hormones directly into the bloodstream.(a) (i), (iii) and (iv) (b) (i) and (iii)(c) (i) and (iv) (d) (i), (ii) and (iii)

Question

Which of the following statements are true about the endocrine glands?(i) They are ductless glands.(ii) They release their hormones into a duct.(iii) They produce chemical messengers called hormones.(iv) They release their hormones directly into the bloodstream.(a) (i), (iii) and (iv) (b) (i) and (iii)(c) (i) and (iv) (d) (i), (ii) and (iii)

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Solution

To determine which of the statements are true about the endocrine glands, let's analyze each option:

(i) They are ductless glands. (ii) They release their hormones into a duct. (iii) They produce chemical messengers called hormones. (iv) They release their hormones directly into the bloodstream.

Statement (i) states that endocrine glands are ductless glands. This means that they do not have ducts or tubes to transport their secretions. This statement is true.

Statement (ii) suggests that endocrine glands release their hormones into a duct. However, this contradicts the definition of endocrine glands as ductless glands. Therefore, this statement is false.

Statement (iii) states that endocrine glands produce chemical messengers called hormones. This is true, as hormones are the chemical messengers produced by endocrine glands.

Statement (iv) claims that endocrine glands release their hormones directly into the bloodstream. This is also true, as endocrine glands secrete hormones directly into the bloodstream for distribution throughout the body.

Based on our analysis, the true statements about endocrine glands are (i), (iii), and (iv). Therefore, the correct answer is option (a) (i), (iii), and (iv).

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