- Home
- Standard 12
- Biology
2.Human Reproduction
normal
$I. $ Sperm cells immediately when they are released from the body and are placed in a petri plate remain alive for much longer duration.
$II.$ Semen contains chemicals that causes females smooth muscles to contract
A
Statement $I$ is true, but $II$ is false
B
Both statements $I$ and $II$ are false
C
Statement $I$ is false, but $II$ is true
D
Both statements are true
Solution
Statement $I$ is false. Sperm live for some time in petridish but when they don't appropriate environment, they will die. $At$ $-196^{\circ} \mathrm{C}$ they can be stored for years. This is the temperature which is maintained at sperm bank. Statement $II$ is true. Because sperm contain prostaglandins which causes uterine wall to contract
Standard 12
Biology
