STD 12 - 4. principal of inheritance and variation — NEET STD 11 Science — Question

$I.$ Insulin $II.$ Epinephrine $III.$ Oestradiol $IV.$ Norepinephrine $V$. Testosterone $VI$. Glucagon

$(1)$ 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?

$(i)$ Cockroaches are brown or black bodied animals that are included in class insecta of phylum arthropoda.

$(ii)$ Males bear a pair of short, thread like anal styles which are absent in females.

$(iii)$ Heart of cockroach consists of elongated muscular tube lying along mid dorsal line of thorax and abdomen.

$(iv)$ The nymph grows by moulting about $13$ times to reach the adult form.