Crossword: Plants

12345678
Across
  1. 2. a wild plant which grows in an unwanted place
  2. 4. a tall tree with five-pointed leaves which turn bright red in autumn
  3. 7. a plant with a very tall stem and a single large round yellow flower
  4. 8. a small sharp point on the stem of some plants, such as roses
Down
  1. 1. the usually brightly colored parts that together form the flower
  2. 3. a thick fleshy plant that grows in hot dry regions
  3. 5. the part of a plant that grows under the ground to get water and food
  4. 6. a part of a tree that grows out from the main trunk and has leaves, flowers or fruit on it