Which character is present in frog but absent in cockroach?

Our heart is composed of which of the following tissues?
$(i)$ Epithelial tissue
$(ii)$ Connective tissue
$(iii)$ Muscular tissue
$(iv)$ Neural tissue

The hardest part in the animal body is

The seminal vesicle or uterus masculinus in rabbit is found at the junction of

How many of the given statements are true?
$A.$ The dry surface of the skin and the moist surface of the buccal cavity are lined by compound epithelium.
$B.$ Cuboidal epithelium facilitates diffusion across the epithelium.
$C.$ Intercalated discs are the cell junctions between the cardiac muscle cells.
$D.$ Skeletal muscle fibers can be located in the biceps muscle.
$E.$ In a bone,osteocytes are located in lacunae.

$A$ tissue,which is a group of cells,possesses: