It is probably the plant which grows the most slowly.
It can take a hundred years to grow a few centimetres.
But plants can also be as big as the Giant Redwood,
the world's most massive living thing.
One tree in California is 84 m high
and probably over two thousand tonnes in weight.
No other type of tree grows higher than the Giant Redwood.
The Dead Horse Arum attracts flies by looking and smelling like dead meat.
Once they get inside the plant,it shuts a door,
and keeps them prisoner for a night.
During the night, it drops pollen on them.
It releases them the next morning covered in pollen,
so that they can go and carry the pollen to another Arum.
One type of Acacia tree in South America encourages ants to live in it.
The tree provides the ants with a home(in special branches)
and with food (little pieces of protein at the end of some leaves).
In return,the ants defend their tree as fiercely as they can.
They attack any other insect or animal which comes near,
and even remove other plants growing near it.

這也許是植物里生長速度最慢的一種了。
它可以在幾百年的時間里只生長幾厘米。
但是植物也可以像巨型紅木那樣巨大，
巨型紅木是世界上最大的生物。
加利福尼亞州的一棵巨型紅木已經(jīng)有八十四米高
擁有超過兩千公噸的重量了。
沒有任何一種物種能比巨型紅木還要高。
白星海芋通過讓蒼蠅看起來和聞起來像是腐肉來吸引蒼蠅。
一旦蒼蠅進(jìn)入了這種植物的內(nèi)部，它立馬就會關(guān)上門，
并把他們關(guān)在門里整整一夜。
在這一夜里，白星海芋會讓花粉落在蒼蠅身上。
并在第二天一早把全身沾滿花粉的蒼蠅放走，
這樣他們就可以帶著白星海芋的花粉去給其他海芋授粉了。
在南美洲有一種阿拉伯膠樹會讓螞蟻住在里面。
這種樹會給螞蟻提供房子（在特殊的樹干上）
以及螞蟻的食物（一些葉子的末端可以分泌一些蛋白質(zhì)）。
作為回報，螞蟻盡自己最大力量來保護(hù)這棵樹。
它們會攻擊任何試圖接近的昆蟲或者是動物，
甚至?xí)P除其他向附近生長的植物。