MCQ
Oxygen is transported to every cell of the body through
- ✓RBC
- BWBC
- CRBC and WBC
- DRBC and hormones
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$(i)$ 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.
Assertion $A$: Endometrium is necessary for implantation of blastocyst.
Reason $R$: In the absence of fertilization, the corpus luteum degenerates that causes disintegration of endometrium.
In the light of the above statements, choose the correct answer from the options given below: