glutathione
Ghrelin is the name of the hormone that stimulates drinking behavior. It also impacts the way that one tastes food, and stimulates feeding.
The presence of CO2 attracts bed bugs and stimulates their feeding and mating behaviors.
The presence of carbon dioxide attracts bed bugs and stimulates their feeding behavior. Bed bugs are drawn to the carbon dioxide that humans exhale, which helps them locate their hosts for feeding.
They are both producers of food
Hydra belongs to the Animalia kingdom. It is a multicellular organism that exhibits characteristics such as movement, feeding on other organisms, and possessing specialized tissues.
Motivation is the energizing force that stimulates behavior to satisfy a need. It can be driven by both internal factors (such as personal desires or beliefs) and external factors (such as rewards or consequences).
A hydra is more efficient at obtaining food than a sponge due to its active predatory behavior and specialized structures. Hydras possess tentacles equipped with stinging cells that allow them to capture and immobilize prey, while sponges rely on passive filter feeding, drawing water through their porous bodies to extract nutrients. This active feeding strategy enables hydras to target and consume a wider variety of prey, enhancing their overall nutrient intake compared to the more limited and less efficient sponge feeding mechanism.
Both the single opening of a hydra and the pseudopod of an amoeba are involved in the process of feeding. The hydra uses its single opening to capture and ingest prey, while the amoeba extends its pseudopod to engulf food particles through phagocytosis.
Hydra or Hydra
The tentacles of a hydra are the most sensitive because they are equipped with specialized cells called cnidocytes, which contain stinging structures called nematocysts. These cells allow the hydra to detect and capture prey, as well as sense changes in its environment. The high concentration of nerve cells in the tentacles enhances their sensitivity, enabling the hydra to respond quickly to stimuli. This adaptation is crucial for both feeding and defense.
If your talking about the fresh water hydra, then it is a few millimeters tall and is best examined using a microscope
Hydra have adapted to regrow if part of their body is separated. In an experiment, scientists ran a hydra through a sieve. When the cells were introduce to water, they eventually regrew into fully formed adult hydra.