Q. No.Each seminiferous tubule is lined by male germ cells called:
1. Spermatogonia 2. Primary spermatocytes 3. Sertoli cells 4. Leydig cells
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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 |
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Which cell in the sperm lineage undergoes reduction division [meiosis]?
| 1. | Type A spermatogonia | 2. | Type B spermatogonia |
| 3. | Primary spermatocyte | 4. | Secondary spermatocyte |
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The testes are situated outside the abdominal cavity within a pouch called the scrotum. This is necessary as:
| 1. | The scrotum can contain lengthy ducts for the transfer of sperms |
| 2. | Scrotum helps in maintaining the low temperature of the testes necessary for spermatogenesis |
| 3. | Scrotum reduces the pressure around the testes necessary for spermatogenesis |
| 4. | Scrotum can store huge amounts of sperms |
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The final release of sperms from the seminiferous tubules is called:
| 1. | Spermiation | 2. | Emission |
| 3. | Retrograde ejaculation | 4. | Ejaculation |
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The ducts of the seminal vesicles open into:
| 1. | Ejaculatory duct | 2. | Rete testis |
| 3. | Urethra | 4. | Vas deferens |
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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 |
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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