Question

A plant which has numerous deep tubes to gulp down its prey

Answer 1

You might be describing the question wrong. You might be asking about insectivorous plants. Insectivorous plant are basically carnivorous plants which get their basic nutrition from the insect which are trapped in the specialised leaves which are grown by the plants. Carnivorous plants have adapted to grow in places where the soil is thin or poor in nutrients especially nitrogen rare areas and because of the deficiency of nitrogen in the soil they capture additional nitrogen by trapping insects.

Answer 2

A plant which depends on preys for its nutrition or sustainment is called an insectivorous plant.

These are carnivorous plants which obtain nutrition through trapping insects in their specialised tubes.

These kinds of plants generally grow in places where the soil is deficient in nutrients and minerals and thus the plant has to depend on other factors for sustainment and life.