Seminal plasma, the fluid part of semen, is contributed by
(i) seminal vesicle (ii) prostate
(iii) urethra (iv) bulbourethral gland

Options

A. i and ii
B. i, ii and iv
C. ii, iii and iv
D. i and iv

Answer

To solve the question regarding the contributors to seminal plasma, we need to analyze each option provided:

1. **Understanding Seminal Plasma**: Seminal plasma is the fluid part of semen that provides a medium for sperm cells. It contains various substances such as fructose, enzymes, and minerals that support sperm function and viability.

2. **Analyzing the Options**:
- **(i) Seminal Vesicle**: The seminal vesicles are responsible for producing a significant portion of the seminal fluid. They secrete a fluid rich in fructose, which provides energy for sperm.
- **(ii) Prostate**: The prostate gland contributes to the seminal plasma by secreting a fluid that contains enzymes and other substances that help to nourish and protect sperm.
- **(iii) Urethra**: The urethra is a passageway for semen to exit the body but does not contribute to the composition of seminal plasma.
- **(iv) Bulbourethral Gland**: Also known as Cowper's glands, these glands produce a pre-ejaculatory fluid that helps to lubricate the urethra and neutralize acidity but also contributes to the seminal plasma.

3. **Conclusion**: The seminal plasma is primarily contributed by the seminal vesicles, prostate gland, and bulbourethral glands. Therefore, the correct answer includes options (i), (ii), and (iv).

**Final Answer**: The correct contributors to seminal plasma are (i) seminal vesicle, (ii) prostate, and (iv) bulbourethral gland.