I watched a very interesting documentary about plants yesterday evening . It was called “ unusual plants ” and looked at several species of plants from around the world which have unusual features .   Really ? Tell me about some of the plants they showed .   Well . There was one type of plant that catches insects and eats them .   Is that type of plant found in this country ?   No , it isn ’ t . it ’ s a pity , because I ’ d like to see it in action .   So would I . what other unusual plants did they show ?   They showed flowers that only provide their nectar to one type of butterfly or bee . The insect has to be the exact size to get the nectar . Other insects cannot get it . Of course , when the insect collects the nectar , it also takes some pollen from one flower to another .   That ’ s very specialized . So , the insects and the flowers rely on each other . If one became extinct , the other would too . 