Question

What organ and system protects by forming a selective barrier?

Answer 1

The skin and mucous membranes form a selective barrier to protect the body from pathogens.

Step-by-step explanation:

The organ and system that protect the body by forming a selective barrier are the skin and mucous membranes. The skin is the body's largest organ and forms a physical barrier between the body and the outside world. It is difficult for pathogens to get through the tough, waterproof outer layer of the skin. Mucous membranes, such as those in the respiratory and gastrointestinal tracts, also provide a barrier to pathogens and facilitate their removal.

Answer 2

Skin and Integumentary system protects by forming a selective barrier.

Explanation:

Multicellular organisms unlike unicellular organism have a variety of systems each having a different function. The body of multicellular organisms is covered with epidermis or skin which is known as largest organ of the body. The skin consists of many sensory receptors and protects by enclosing muscles and other body tissues. While Integumentary system is made with skin and its various appendages like hair, feathers, nails etc. with receptors and secretary pores and protects the body from pain.