- 1(current)
Q. No.The spermatids are transformed into spermatozoa by a process called:
| 1. | Spermiation | 2. | Spermatocytogenesis |
| 3. | Spermiogenesis | 4. | Spermatolysis |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 82%
From NCERT
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Which of the following helps spermatids in their transformation to sperms?
| 1. | Leydig cells | 2. | Type B spermatogonia |
| 3. | Type A spermatogonia | 4. | Sertoli cells |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 76%
From NCERT
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Leydig cells synthesize androgens under the direct influence of:
| 1. | FSH | 2. | LH |
| 3. | FSH and LH | 4. | GnRH |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 78%
From NCERT
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FSH:
| 1. | Acts on Sertoli cells and stimulates secretion of some factors that help in spermiogenesis |
| 2. | Acts on Sertoli cells and inhibits secretion of some factors that help in spermiogenesis |
| 3. | Acts on Leydig cells and stimulates secretion of some factors that help in spermiogenesis |
| 4. | Acts on Leydig cells and inhibits secretion of some factors that help in spermiogenesis |
Subtopic: Â Seminiferous Tubules & Spermatogenesis |Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 87%
From NCERT
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A cross-section at the midpoint of the middle piece of a human sperm will show :
| 1. | centriole, mitochondria, and 9+2 arrangement of microtubules |
| 2. | centriole and mitochondria |
| 3. | mitochondria and 9+2 arrangement of microtubules |
| 4. | 9+2 arrangement of microtubules only |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
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An organelle covering the head of animal sperm and containing enzymes that digest the egg cell coating, thus permitting the sperm to enter the egg is called as:
| 1. | nebenkern | 2. | manchette |
| 3. | head | 4. | acrosome |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 87%
From NCERT
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In humans, the process of spermatogenesis in males and oogenesis in females are similar in:
| 1. | Age at which the processes begin |
| 2. | The number of resultant haploid cells |
| 3. | Cytokinesis |
| 4. | Occurring in respective primary sex organs |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |Â oogenesis |
 73%
From NCERT
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The term used to describe the changes that happen to the sperm inside the female reproductive tract that allows the sperm to become capable of fertilizing the egg is:
| 1. | spermiogenesis | 2. | the acrosomal reaction |
| 3. | capacitation | 4. | implantation |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 81%
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