Science Quater Exam 12/12/06
Terms
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- what are the 2 kinds of seed plants?
- gymnosperms and angiosperms
- gymnosperms
- seeds aren't inclosed
- angiosperms
- seeds are inclosed
- most gymnosperms are....
- evergreens
- angiosperms are....
- disiguose
- monocots
-
1 cotyledon
parallel veins - dicots
-
2cotyledons
net-like veins - annuals`
- live only 1 growing season
- biennials
- live for 2 growing seasons
- perennials
- mature during 2nd growing season and continue year to year
- organs that anchor plants
- roots
- xylem and phloem
- the two types of vascular tissue in roots
- xylem
- carries water
- phloem
- carries food
- thread-like extentions
- root hairs
- 2 kinds of roots
- tap roots and fiberous roots
- tap roots
-
anchor well
grow straight down - fiberous roots
-
spread out
don't anchor very well - 2 kinds of stems
-
herbacious
woody - 2 main parts of leaves
-
blade
petiole - 2 kinds of leaves
-
broad
needle - 2 basic shapes of broad leaves
-
simple
compound - simple
- single undivided
- compound
- bled is divided into several parts called leaflets