Muscle, cartilage, bone, and heart all develop from the layer of the blastocyst. ectoderm mesoderm endoderm lipoderm

The correct answer is mesoderm.

Explanation:

A germ layer is a layer of cells that forms during embryo development. In triploblastic animals, there are three layers. Mesoderm between ectoderm and endoderm two layers, forming triploblastic. Germ layers give rise to all tissues and organs by the process of organogenesis.

Mesoderm give rise to muscles, cartilage, bone, heart, connective tissue, adipose tissue, lymphatic system, circulatory system, dermis, genitourinary system, notochord, and serous membranes.

Thus, the correct answer is mesoderm.

a

explanation:

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )