STD 12 - 12. ecosystem — Biology STD 12 Science — Question

$I.$ tobacco budworm and armyworm

$II.$ Beetles

$III.$ Flies and mosquitoes

Choose the correct option.

$(1)$ medical termination of pregnancy $(MTP)$ during first trimester is generally safe

$(2)$ generally chances of conception are nil until mother breast feeds the infant upto two years

$(3)$ intrauterine devices like copper $T$ are effective contraceptives

$(4)$ contraception pills may be taken upto one week after coitus to prevent conception.

Which two of the above statements are correct?