The plant that you are thinking of is the VENUS FLY TRAP, and it does not have tentacles it has spines that link together and form a cage so the insect can not get out.
The mouth.
Insects don't have tentacles. Octopuses do. They have 8.
A Venus Flytrap (Dionaea muscipula) is a carnivorous plant of wetlands, or as a house plant. The plant traps insects and absorbs the nutrients of the insect.
It includes establishments making insect traps
The sundew plant captures and digests its prey by using sticky tentacles on its leaves to trap insects. Once an insect is caught, the plant secretes enzymes to break down the insect's body for nutrients.
The sticky buds on the sundew plant are called glandular trichomes or tentacles. These specialized structures secrete a sticky, adhesive substance that traps insects, allowing the plant to obtain nutrients through digestion. The tentacles also respond to touch, curling around captured prey to enhance the trapping process.
Venus fly traps digest their prey by secreting enzymes that break down the trapped insect's body into nutrients, which are then absorbed by the plant for energy and growth.
an insect touches a leaf of a sundew plant then the leaf slowly moves and covers the insect with all those sticky stuff and then digest it and the nutrients go in the plant by tiny holes leading to the roots.
Venus fly traps digest food through a process called enzymatic digestion. When an insect is trapped in the plant's leaves, the plant secretes digestive enzymes that break down the insect's soft tissues. This releases nutrients that the plant can absorb and use for growth. The process can take several days to complete, after which the trap reopens to catch more prey.
Hmm I don't know..
J. F. Flannagan has written: 'Studies on some riverine insect emergence traps' -- subject(s): Zoology, Insect traps
A pitcher plant is a type of carnivorous plant that traps insects and other prey in specialized tube-shaped leaves filled with digestive enzymes. These plants are found in nutrient-poor environments where they rely on insect prey to supplement their diet.