Read the following statements (A - E) and answer the question that follows them -
A Infundibulum in the thyroid is a thin flap of connective tissue .
B - Rupturing of Graafian follicles to release ovum is mediated by LH.
C - Source of GH and Prolactin are different
D - Hormones are non - nutrient chemicals.
How many of the above statements are incorrect ?

Options

A. None
B. One
C. Two
D. Three

Answer

To determine how many of the statements (A - E) are incorrect, we will evaluate each statement one by one.

### Step 1: Evaluate Statement A
**Statement A:** "Infundibulum in the thyroid is a thin flap of connective tissue."
- **Evaluation:** This statement is incorrect. The correct term for the thin flap of connective tissue in the thyroid is "isthmus," not "infundibulum." The infundibulum refers to a part of the pituitary gland, not the thyroid.

### Step 2: Evaluate Statement B
**Statement B:** "Rupturing of Graafian follicles to release ovum is mediated by LH."
- **Evaluation:** This statement is correct. Luteinizing hormone (LH) plays a crucial role in triggering ovulation, which involves the rupture of Graafian follicles to release an ovum.

### Step 3: Evaluate Statement C
**Statement C:** "Source of GH and Prolactin are different."
- **Evaluation:** This statement is incorrect. Both Growth Hormone (GH) and Prolactin are produced by the anterior pituitary gland, making their source the same.

### Step 4: Evaluate Statement D
**Statement D:** "Hormones are non-nutrient chemicals."
- **Evaluation:** This statement is correct. Hormones are indeed classified as non-nutrient chemicals that act as signaling molecules in the body.

### Step 5: Count the Incorrect Statements
- From the evaluations:
- Statement A: Incorrect
- Statement B: Correct
- Statement C: Incorrect
- Statement D: Correct

Thus, there are **2 incorrect statements** (A and C).

### Conclusion
The answer to the question "How many of the above statements are incorrect?" is **2**.

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