Biology
The figure given below is an important gonad of humans. Study the figure and answer the following questions.
![The figure is an important gonad of humans. Identify the organ. Write its specific location in the body. The Reproductive System, Concise Biology Solutions ICSE Class 10.](https://cdn1.knowledgeboat.com/img/cb10/identify-gonad-concise-biology-solutions-icse-class-10-308x520.png)
(a) Identify the organ. Write its specific location in the body.
(b) Label the parts shown in the figure as 1 to 4.
(c) Write important functions of parts 2 and 4.
(d) Name one cellular structure and one hormone which are produced in part 3.
(e) Draw a neat and labelled diagram of the cellular structure mentioned by you in (d).
Reproductive System
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Answer
(a) Testis.
They are located in scrotal sac.
(b)
- 1 → Epididymis
- 2 → Efferent ducts
- 3 → Seminiferous tubules
- 4 → Sperm duct
(c) Efferent ducts (Part 2) conduct sperm to epididymis.
Sperm duct (Part 4) transmit sperms from testes to urethra.
(d) Sperms and testosterone.
(e) Labelled diagram of the cellular structure of the sperm is given below:
![Labelled diagram of the cellular structure of the sperm. The Reproductive System, Concise Biology Solutions ICSE Class 10.](https://cdn1.knowledgeboat.com/img/cb10/sperm-structure-concise-biology-solutions-icse-class-10-592x313.png)
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(b) Label the guidelines 1 to 7.
(c) Write one important role of parts 3 and 6.
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