Polyspermy refers to

Options

A. formation of many sperms by a male
B. changes in sperm nucleus
C. formation of many sperms
D. penetration of many sperms into an ovum simultaneously

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Polyspermy":**
- Polyspermy is a biological term that describes a specific phenomenon in reproduction. To understand it, we need to break down the word itself. "Poly" means many, and "spermy" relates to sperm.

2. **Analyzing the Options:**
- We have four options to choose from regarding the definition of polyspermy:
- **Option 1:** Formation of many sperms by a male.
- **Option 2:** Changes in sperm nucleus.
- **Option 3:** Formation of many cells.
- **Option 4:** Penetration of many sperms into an ovum simultaneously.

3. **Evaluating Each Option:**
- **Option 1:** This option refers to the production of sperm, which is not what polyspermy means. Therefore, it is incorrect.
- **Option 2:** This option talks about changes in the sperm nucleus, which does not define polyspermy. Thus, it is also incorrect.
- **Option 3:** This option mentions the formation of many cells, which again does not relate to polyspermy. Hence, it is incorrect.
- **Option 4:** This option states that polyspermy refers to the penetration of many sperms into an ovum simultaneously. This accurately describes the phenomenon of polyspermy.

4. **Conclusion:**
- After evaluating all the options, we find that **Option 4** is the correct definition of polyspermy. It specifically refers to the situation where multiple sperm cells penetrate a single ovum at the same time.

**Final Answer:**
Polyspermy refers to the penetration of many sperms into an ovum simultaneously.

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