I would have to say appendages. And I like you ;)
structures that perform the organic functions at the level of the whole body are called
The brushlike structures on a polychaete body are called parapodia. They are used for locomotion, respiration, and sometimes for feeding in many species of polychaetes, which are a type of marine annelid worm.
Organs
Fats are transported throughout the body in structures called lipoproteins. These are complex particles made up of lipids and proteins that carry fats such as cholesterol and triglycerides through the bloodstream to various tissues.
Structures that carry messages between the brain and other parts of the body are called nerves. Nerves are a part of the body's nervous system and enable communication through the transmission of electrical and chemical signals.
Hair folicles
Pores
fruiting body
yes
structures that perform the organic functions at the level of the whole body are called
Hair on the human body is produced by hair follicles, which are small structures in the skin that grow hair.
Thread like structures in fungi are called hyphae .
I think you may be looking for the word appendages.
No. The structures that grow from the body are called 'appendages'. In 'invertebrates' (animals without a backbone or spine, broadly speaking), they include antennae, wings, legs etc. while in 'vertebrates'(animals having a spine, e.g. humans) they include the limbs. Spiracles on the other hand are small openings on the bodies of a few animals that are connected to the respiratory system of the animal and these are used for 'breathing'. Their function is quite similar to that of the nostrils in humans.
Dendrites.
The brushlike structures on a polychaete body are called parapodia. They are used for locomotion, respiration, and sometimes for feeding in many species of polychaetes, which are a type of marine annelid worm.
they divide and grow by undergoing a process called as mitosis