Question

Examples of triploblastic organisms is _____________
A. Taenia solium
B. Fasciola hepatica
C. Both A and B
D. None of these

Answer 1

Hint: Triploblasty is a gastrula condition in which there are three main germ layers: ectoderm, mesoderm, and endoderm. The fourth "layer" consists of germ cells which are released into the embryo at the blastula stage and are involved in the gonads during organogenesis. During blastula gastrulation, a germ layer is formed. Most of the multicellular animals belonging to the Phylum Platyhelminthes Phylum chordate are triblast cells. Ctenophores, sponges, and corals are diploblastic.

Complete answer:
Both Taenia sodium and Fasciola hepatica belong to the phylum Platyhelminthes.
So, for answering the question let’s study about characteristics of the phylum Platyhelminthes.
● The Platyhelminthes type are triploblastic, acoelomate (without body cavity), and bilaterally symmetrical animals. The body is smooth, non-segmented, flat towards the abdomen. There are no metameric subdivisions of any kind. Some representatives (for example, eukestode) have a pseudo-metabolic syndrome.
● The front end of the body is different from the head. The body is smooth, ciliated, and covered with a ciliated epidermis (Turbellaria), and in the resting class (Trematoda, Monogenea, and Cestoidea) has a non-ciliated body, with a sheath called a tegument. The mesenchyme, which occupies the entire space between the outer wall of the body and the endoderm of the intestine, develops in the layers of the ectoderm and endoderm of the embryo.
● No respiratory or circulatory system. Hemoglobin is present in several types of species (Derostoma, Syndesmis, Telorchis, etc.). The nervous system is the most primitive type and is formed by a pair of cerebral nodes or longitudinal nerve connections to the brain. The excretory system consists of protonephridia. The reproductive system is usually hermaphroditic.
So, from the above points, it’s clear that Both Taenia sodium and Fasciola hepatica are triploblastic organisms. There are three main layers of embryonic cells: ectoderm, mesoderm, and endoderm, which distinguish between the various tissues and organs of the animal's body.

Hence the correct option is (C).

Note:
Each of the three layers is programmed to create specific tissues and organs, but there are differences in this matter. Generally, the endodermal layer forms the inner covering (lining) of the digestive tract including the stomach, intestines, liver, and pancreas as well as the lining of the organs, and lungs, as well as several other structures. Ectoderm develops in the epithelial layer outside the surface of the body, the central nervous system, and many other structures. The mesoderm is the third layer. It is formed in tribalist cells between the endoderm and ectoderm. It is from this layer that all special muscle tissues (including the muscles of the heart and intestines), connective tissues such as skeletal and blood cells, and most other internal organs such as the kidneys and spleen come from.