| 1. | In adults, each testis is oval in shape, with a length of about 4 to 5 cm. |
| 2. | Testis is covered by loose connective tissue. |
| 3. | Each testis has about 250 compartments called testicular lobules. |
| 4. | Temperature of testis within scrotum is lower than the normal internal body temperature. |
The testes are situated outside the abdominal cavity within a pouch called 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 testes necessary for spermatogenesis |
| 4. | Scrotum can store huge amounts of sperms |
Match column I with column II and select the correct option using the codes given below
Column 1 Column II
A. Mons pubis 1. Embryo formation
B. Antrum 2. Sperm
C. Trophectoderm 3. Female external genitalia
D. Nebenkern 4. Graafian follicle
Codes
A B C D
(a) 3 4 2 1
(b) 3 4 1 2
(c) 3 1 4 2
(d) 1 4 3 2
The shared terminal duct of the reproductive and urinary system in the human male is
1. Urethra
2. Ureter
3. Vas deferens
4. Vasa efferentia
The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for
| 1. | escaping any possible compression by the visceral organs |
| 2. | providing more space for the growth of epididymis |
| 3. | providing a secondary sexual feature for exhibiting the male sex |
| 4. | maintaining the scrotal temperature lower than the internal body temperature |
Assertion : In human male, testes are extra-abdominal and lie in scrotal sacs.
Reason : Scrotum acts as thermoregulator and keeps testicular temperature lower by 2°C normal spermatogenesis.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion : At puberty, human male develops secondary sexual characters.
Reason : At puberty, there is decreased secretion of testosterone in male.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Male reproductive system of humans has not
| 1. | A testis only | 2. | Accessory Ducts |
| 3. | Glands | 4. | External Genitalia |
Testes of humans are located in
| 1. | Inside abdominal cavity |
| 2. | Within a tunnel like structure |
| 3. | Within Scrotum |
| 4. | More than one option is correct |
Suppose the internal temperature of body is 36.5 degree celsius now what will be the temperature required for human spermatogenesis?
1. 34.2 degree Celsius
2. 33 degree Celsius
3. 38 degree Celsius
4. 38.2 degree Cell
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