野生植物

野 = 予 + 里 : Maud Younger (y) and Zai Yu (予) are having a picnic (野; picnic: 野餐) in the elevator (e3). Zai Yu has a sunflower (里) Maud Younger really wants to have, but although he is fast asleep he holds to the sunflower tightly and won't give (予) it to Maud.

生 = 牛 + 一 : Mnemonic symbol: a cradle.

Sherlock Holmes (sh) comforts a crying baby bull (牛) in a cradle (生) in front of the engine ((e)ng1) and plays him a tune on a flute (一).

植 = 木 + 直 : James II of England (zh) decided to go straight-edge (直), so he buried all his drugs in a hole in the space station's kitchen (Ø2) and, as a sign for his new beginning, plants (植) a Christmas tree (木) on top of it.

物 = 勿 + 牛 : Willy Walrus (w) wants to become a physicist (物) and does research about dark matter (物) in the space station's bathroom (Ø4). His motivation is to become a super villain and rule the world. Just as he is about to have a breakthrough, a huge black ox (牛) flying with the help of bat wings (勿) hits Willy with an oxerang and takes away the dark matter, saving the world.