BIOLOGICAL CLASSIFICATION
KINGDOM ANIMALS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
very simple animal with pores that allow water to flow through; have special cells for getting food and oxygen
|
|
|
holes
|
|
|
have tube like body in segments; simplest organism with a true nervous system and blood in vessels breathe through wet skinlong digestive tract that runs the entire length of body
|
|
|
have arms that extend outward from middle of body spiny skin get oxygen from tube feet
|
Detailed explanation-1: -Porocytes are narrow and elongated cells that connect the outside of the sponge to the inside cavity. These pores are sometimes also referred to as ostia, and they provide openings for water, which carries planktonic food and oxygen, to enter the sponge body (Fig. 3.19).
Detailed explanation-2: -Although sponges do not have organized tissue, they depend on specialized cells, such as choanocytes, porocytes, amoebocytes, and pinacocytes, for specialized functions within their bodies.
Detailed explanation-3: -Sponges. Usually found in the sea, sponges are some of the world’s simplest animals. They have no heads, eyes, tails, or mouths, and they live most of their lives rooted in one spot. Their bodies are full of tiny holes called pores.
Detailed explanation-4: -Sea sponges have been harvested for centuries. They are used for numerous things, such as cleaning, bathing, personal hygiene, art, décor, and even disease treatment.
Detailed explanation-5: -In addition to the osculum, sponges have multiple pores called ostia on their bodies that allow water to enter the sponge. In some sponges, ostia are formed by porocytes, single tube-shaped cells that act as valves to regulate the flow of water into the spongocoel.