I would say by watching them that retraction is fast, but when the body is longer and extended it takes couple of seconds and it glides in the water.
The green hydra (Chlorohydra viridissima) gets its colour from green algae which live inside its tissues in a mutually beneficial relationship. The algae living inside the hydra benefit from having a sheltered safe environment and obtain food by-products from the hydra. The hydra also benefit from algal products. from www.offwell.free-online.co.uk/hydra.htm Hydra eat one celled animals, small crustaceans, worms, insects and other tiny animals. They are also reported to eat small fish fry in the aquarium, where they do occasionally show up. Hydra have a saclike body and a circle of tentacles at around the body opening. This opening is used for both taking in food and eliminating wastes. from http://www.naturalaquariums.com/inverts/hydra.html So this would make them heterotrophs. AliceJM
In bipolar disorder, slow cycling refers to experiencing less than four mood episodes in a year, while rapid cycling refers to having four or more mood episodes in a year. Both slow cycling and rapid cycling are terms used to describe the frequency of mood episodes in bipolar disorder, with rapid cycling typically associated with more severe and difficult-to-treat symptoms.
Punctuated equilibrium is the model of evolution in which periods of rapid change occur interspersed with long periods of stability. This theory suggests that species evolve quickly in short bursts of rapid change followed by extended periods of little or no change.
Foot flexion refers to the bending of the foot downward, while foot extension refers to the movement of the foot upward. Flexion has a greater range of motion compared to extension, allowing for more movement in activities like walking and running. However, excessive flexion or extension can lead to strain or injury in the foot, affecting overall foot health. It is important to maintain a balance between flexion and extension to prevent issues such as plantar fasciitis or Achilles tendonitis.
A fixator for a leg extension exercise is a piece of equipment that helps stabilize and secure the leg during the movement, typically found in a leg extension machine. It is designed to isolate the quadriceps muscles by restricting movement in the hip and knee joints, allowing for more targeted muscle engagement and better form. Fixators can help enhance the effectiveness and safety of leg extension exercises by providing proper support for the legs.
No a hydra is not a fish. A fish is a vertebrate. A hydra is much more primitive.
No a hydra is not a fish. A fish is a vertebrate. A hydra is much more primitive.
retraction
The main difference between Hydra 10 and Hydra 20 is their capacity. Hydra 10 has a capacity for 10 gallons, while Hydra 20 has a capacity for 20 gallons. This means Hydra 20 can filter a larger volume of water compared to Hydra 10.
A hydra's diet does not change while budding, but it does eat more often.
No, Daphnia can not eat Hydra, Because the Hydra has tentacles to capture the Daphnia and eat it. The Daphnia therefore can not get free which means the Hydra can eat the Daphnia. The Hydra therefore has more force and can eat the Daphnia. Your answer is NO.
A hydra was a many-headed mythological creature fought by Hercules. Every time a hydra’s head is cut off, two more grows in its place. Hercules finally defeated the creature by burning the stumps of the hydra’s neck, preventing it from regrowing.
more rapid, most rapid
The comparative of rapid is more rapid
A hydra is a 7-headed creature that, whenever a head is cut off, 2 more grow back! Very deadly.
Hydra never had offspring so the world will never know.
Yes