Hydra is a carnivore and feed on tiny nematodes, crustaceans etc. It ingests food with the help of tentacles that pacify or kill the prey and it is then pushed into the mouth.
So, the answer is Carnivorous.....

Hydra: A Carnivorous Organism

Hydra is a small, tubular, and freshwater organism belonging to the phylum Cnidaria. Despite its simple structure, Hydra is an intriguing creature with unique feeding habits. Let's explore whether Hydra is classified as a herbivore, carnivore, omnivore, or none of these.

Understanding Hydra's Feeding Habits

Hydra is a predatory organism that primarily feeds on small aquatic invertebrates, making it a carnivore. It uses its tentacles, armed with specialized stinging cells called cnidocytes, to capture and immobilize its prey. The cnidocytes contain nematocysts, which inject venom into the prey, paralyzing it and facilitating ingestion.

Characteristics of Carnivores

Carnivores are organisms that derive their nutrition by consuming other animals or the tissues of other organisms. They have certain characteristics that make them distinct from other feeding categories:

1. Anatomical Adaptations: Carnivores often possess sharp teeth and claws, which aid in capturing and tearing apart prey. They also have a well-developed digestive system that enables them to efficiently process and absorb animal proteins.

2. Dietary Requirements: Carnivores typically obtain essential nutrients, such as amino acids and vitamins, from the tissues of other animals. They rely on the high protein content found in animal flesh for their energy needs.

3. Behavioral Traits: Carnivores exhibit hunting behavior, actively pursuing and capturing their prey. They possess specialized sensory organs, like keen eyesight or scent detection, to locate and track potential food sources.

Hydra's Carnivorous Adaptations

Hydra exhibits several characteristics that align with those of carnivores, further establishing its classification as a carnivorous organism:

1. Tentacles: Hydra possesses tentacles armed with cnidocytes, which are specifically designed for capturing and immobilizing prey.

2. Prey Selection: Hydra primarily targets small invertebrates, such as water fleas, tiny crustaceans, and other microscopic organisms that inhabit freshwater environments.

3. Feeding Mechanism: Once prey is captured, Hydra uses its tentacles to bring it closer to its mouth. It then extends its mouthparts to engulf and digest the prey's tissues.

Conclusion

In conclusion, Hydra is classified as a carnivore due to its feeding habits, anatomical adaptations, and prey selection. It actively hunts and consumes small aquatic invertebrates, relying on their tissues for its nutritional needs. By understanding Hydra's feeding ecology, we can appreciate the diverse range of feeding strategies found in the animal kingdom.