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Head of sperm contains...

Head of sperm contains

A

Nucleus having diploid set of chromosomes

B

Nucleus having haploid set of chromosomes

C

Nucleus and mitochondria

D

Mitochondria and acrosome

Text Solution

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Structure of Sperm**: - The sperm is the male gamete and is always haploid in nature, meaning it contains one set of chromosomes (N). 2. **Identifying the Regions of Sperm**: - The sperm has three main parts: the head, the middle piece, and the tail. - The head contains two important components: the acrosome and the nucleus. 3. **Components of the Head**: - **Acrosome**: Located at the tip of the head, it contains acrosomal enzymes that are crucial for penetrating the egg's protective layers during fertilization. - **Nucleus**: The nucleus is elongated and contains the haploid set of chromosomes (N). This is where the genetic material is stored. 4. **Clarifying Misconceptions**: - The head does not contain mitochondria; mitochondria are found in the middle piece of the sperm, which provides energy for motility. - The neck region contains the centriole, which is also not part of the head. 5. **Evaluating the Options**: - Option 1: Nucleus with a diploid set of chromosomes - Incorrect (sperm is haploid). - Option 2: Nucleus with a haploid set of chromosomes - Correct (this is what is present in the head). - Option 3: Nucleus and mitochondria - Incorrect (mitochondria are in the middle piece). - Option 4: Mitochondria and acrosome - Incorrect (acrosome is in the head, mitochondria are in the middle piece). 6. **Conclusion**: - The correct answer is that the head of the sperm contains the nucleus with a haploid set of chromosomes.
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