MCQ
There is no life on moon due to absence of:
- A$O_2$
- ✓Water.
- CLight.
- DTemperature.
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$A.$ Pelvic inflammatory disease $(PID)$
$B.$ Still births
$C.$ Infertility or even cancer of reproductive tract
$D.$ Ectopic pregnancies
Statement $I$ : Bt toxins are insect group specific and coded by a gene cry $IAc$.
Statement $II$ : Bt toxin exists as inactive protoxin in B. thuringiensis. However, after ingestion by the insect the inactive protoxin gets converted into active form due to acidic $\mathrm{pH}$ of the insect gut.
In the light of the above statements, choose the correct answer from the options given below:
$A.$ Barrier methods of contraception
$B.$ Cover the cervix during coitus
$C.$ Protect the user from contracting $STDs$
$D.$ They are reusable