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Also in the head are two eyespots in the brain, and several sensory cirri and pairs of hollow antenna-like clavae which may be chemoreceptors. [ 3 ] The tardigrade Dactylobiotus dispar can be trained by classical conditioning to curl up into the defensive 'tun' state in response to a blue light associated with a small electric shock, an ...
Spider wasps paralyse and eventually kill their hosts, but are considered parasitoids, not predators.. At the most basic level, predators kill and eat other organisms. However, the concept of predation is broad, defined differently in different contexts, and includes a wide variety of feeding methods; moreover, some relationships that result in the prey's death are not necessarily called pre
Sporocysts are elongated sacs that produce either more sporocysts or rediae. This is where larvae can develop. [4] Mother sporocyst: These have loose plates (cilia) and migrate to gonads. Daughter sporocyst: These are an asexual production of cercariae; they absorb nutrients while having no mouth.
In order to explore the influences of the hypothalamus as a drive on the four Fs, researchers lesioned the lateral areas of the hypothalamus of rats. This resulted in a reduction in the interest of eating (feeding). If these animals were not fed or cared for, they starved to death, even when enough food was present around them.
Ciliates (which move by using hair-like structures called cilia) and amoebae (which move by the use of temporary extensions of cytoplasm called pseudopodia). Many protozoa, such as the agents of amoebic meningitis, use both pseudopodia and flagella. Some protozoa attach to the substrate or form cysts, so they do not move around . Most sessile ...
Okay, technically it's not a food comparison, but it's still uncomfortable to imagine mopping your floors with a living creature. 8. Labradoodle or fried chicken:
The conidiophores (specialized fungal hyphae that produce conidia) are up to 400 μm high and about 2–4 μm wide in the main axial hyphae. The phialides are arranged in tufts with narrow angles at the top, similar to the branching hyphae found in Trichoderma species. The conidia are roughly spherical with a truncate base in each spore, pale ...
Hatching takes place after 10 days of gestation; the young echidna, called a puggle, [23] [24] born larval and fetus-like, then sucks milk from the pores of the two milk patches (monotremes have no teats) and remains in the pouch for 45 to 55 days, [25] at which time it starts to develop spines. The mother digs a nursery burrow and deposits the ...