Question

A pair of insectivorous plant is
A) Drosera and Rafflesia
B) Nepenthes and Bladderwort
C) Dionaea and Viscum
D) Venus flytrap and Rafflesia

Answer 1

Insectivorous plants also known as carnivorous plants are those which derive their nutrition by trapping and consuming certain insects but are known to carry out photosynthesis to obtain energy.

Complete answer-
The insectivorous plants are known to have either of the five trapping mechanisms by which they trap their prey- pitfall trap, flypaper trap, lobster pot trap, bladder trap and snap trap. Pitfall traps are known as passive traps, they attract their prey by nectar and bright flowers into a pitcher the lining of which is covered in wax. This causes the insect to slip and fall into the pitcher after which digestive enzymes are released that breakdown the insect. Examples include Nepenthes , Heliamphora , Catopsis ,etc. Flypaper traps consist of sticky mucilage on the leaves that traps the prey, examples include Drosera , Byblis, etc. Lobster pot traps consist of a chamber where entry of the insect is easy but exit is difficult or obstructed. Examples include Sarracenia , Nepenthes , etc. Bladder traps consist of a bladder structure that pumps ions that generate partial vacuum inside the bladder by osmosis, the insect is sucked inside the bladder and digested. Examples include Bladderwort, Daphnia , etc. Snap traps consist of a trap that closes the moment a prey sits on it after which it is digested by secretion of digestive enzymes. Examples include Dionaea , Aldrovanda, etc.

**So the correct option is option B)Nepenthes and Bladderwort **

Note-
Apart from the above mentioned trapping mechanisms, few plants have combination traps where two kinds of traps are present. Insectivorous plants are important because they have medicinal uses, few compounds derived from them have anti-fungal properties which can be developed into antifungal drugs.