The mode of nutrition in bladderwort is carnivorous. Bladderwort is a type of aquatic plant that belongs to the genus Utricularia. It is known for its unique and specialized way of obtaining nutrients.

Carnivorous plants have evolved to capture, digest, and absorb nutrients from animals in order to supplement their nutrient requirements. Bladderwort is a prime example of a carnivorous plant that has adapted to its environment and developed specific mechanisms to catch and consume small prey.

How does Bladderwort catch its prey?
- Bladderwort possesses specialized structures called "bladders" that are present on its submerged leaves and stems.
- These bladders act as tiny suction traps that are capable of capturing small aquatic organisms such as water fleas, mosquito larvae, and other microscopic animals.
- The bladders have a trapdoor-like structure that is held closed by a thin layer of fluid. When a small animal comes into contact with trigger hairs on the bladder, the trapdoor is opened, and water rushes in, carrying the prey into the bladder.

How does Bladderwort digest its prey?
- Once the prey is trapped inside the bladder, it is digested by enzymes secreted by the plant.
- The digested nutrients are then absorbed by the bladderwort through its specialized cells.
- The nutrients derived from the prey, such as nitrogen and phosphorus, are essential for the growth and development of the plant.

Why is Bladderwort carnivorous?
- Bladderwort is classified as a carnivorous plant because it obtains a significant portion of its nutrient requirements from animal sources.
- This mode of nutrition allows bladderwort to survive in nutrient-poor environments, such as acidic bogs and wetlands, where the availability of essential nutrients may be limited.
- By capturing and digesting small animals, bladderwort is able to supplement its nutrient intake and thrive in these challenging habitats.

In conclusion, the mode of nutrition in bladderwort is carnivorous. This unique adaptation allows the plant to obtain essential nutrients from small aquatic organisms, enabling it to survive in nutrient-poor environments.