Dichotomous Key for Hopkins Plants

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Key for Hopkins Plants
1a) Plant more than 2 inches tall……………………………………………………go to 2
1b) Plant NOT more than 2 inches tall……………………………………………...MOSS
2a) Has needles…………………………………………………………………….go to 3
2b) Does NOT have needles……………………………………………………….go to 5
3a) Needles attached singly to branch…………………………………………….BLUE SPRUCE
3b) Needles attached to branch in bundles……………………………………….go to 4
4a) Trunk of tree is orange and flaky near top; needles 3 inches long……………SCOTCH PINE
4b) Trunk of tree is gray; needles 3-8 inches long………………………………..AUSTRIAN PINE
5a) Leaves and branches are opposite……………………………………………..go to 6
5b) Leaves and branches are alternate……………………………………………go to 9
6a) Leaves are compound…………………………………………………………GREEN ASH
6b) Leaves are simple………………………………..…………………………….go to 7
7a) Leaf has small drops of white, milky sap oozing out of leaf stem when
pulled off the tree. ………………………………..………………………...NORWAY MAPLE
7b) Leaf does NOT have small drops of white, milky sap oozing out of leaf
stem when pulled off the tree. …………………………………………….. go to 8
8a) Leaf has smooth edges………………………………………………………...FLOWERING DOGWOOD
8b) Leaf has toothed edges………………………………………………..............RED MAPLE
9a) Tree has white bark………………………………..…………………………..PAPER BIRCH
9b) Tree does NOT have white bark………………………………………………..go to 10
10a) Leaves have parallel veins…………………………………………………...GINGKO BILOBA
10b) Leaves have pinnate or palmate veins…..…………………………………..go to 11
11a) Leaves have a flattened petiole (leaf stem) …………………………………go to 12
11b) Leaves do NOT have flattened petioles (leaf stem) …………………………go to 13
12a) Has fewer than 20 teeth per leaf…………………………………………….BIGTOOTH ASPEN
12b) Has more than 20 teeth per leaf ……………………………………………...QUAKING ASPEN
13a) Leaf is simple…………………………………………………………………go to 14
13b) Leaf is compound……………………………………………………………HONEY LOCUST
14a) Leaf has smooth edges……………………………………………………….go to 15
14b) Leaf has toothed edges ………………………………………………………go to 16
15a) Leaf has lobes………………………………………………………………….RED OAK
15b) Leaf has NO lobes………………………………………………………..FLOWERING DOGWOOD
16a) Some of the leaves have lobes………………………………………………..MULBERRY
16b) Leaves are NOT lobed………………………………………………………..AMERICAN ELM
A) _____________________________________ B) ______________________________________
Vascular Tissue:____________________
Vascular Tissue:____________________
Seeds or Spores: ____________________
Seeds or Spores: ____________________
Flowers: __________________________
Flowers: __________________________
C) _____________________________________
D) ______________________________________
Vascular Tissue:____________________
Vascular Tissue:____________________
Seeds or Spores: ____________________
Seeds or Spores: ____________________
Flowers: __________________________
Flowers: __________________________
E) _____________________________________
F) ______________________________________
Vascular Tissue:____________________
Vascular Tissue:____________________
Seeds or Spores: ____________________
Seeds or Spores: ____________________
Flowers: __________________________
Flowers: __________________________
G) _____________________________________ H) ______________________________________
Vascular Tissue:____________________
Vascular Tissue:____________________
Seeds or Spores: ____________________
Seeds or Spores: ____________________
Flowers: __________________________
Flowers: __________________________
I) _____________________________________
J) ______________________________________
Vascular Tissue:____________________
Vascular Tissue:____________________
Seeds or Spores: ____________________
Seeds or Spores: ____________________
Flowers: __________________________
Flowers: __________________________
K) _____________________________________ L) ______________________________________
Vascular Tissue:____________________
Vascular Tissue:____________________
Seeds or Spores: ____________________
Seeds or Spores: ____________________
Flowers: __________________________
Flowers: __________________________
M) _____________________________________ N) ______________________________________
Vascular Tissue:____________________
Vascular Tissue:____________________
Seeds or Spores: ____________________
Seeds or Spores: ____________________
Flowers: __________________________
Flowers: __________________________
O) _____________________________________ P) _______________________________________
Vascular Tissue:____________________
Vascular Tissue:____________________
Seeds or Spores: ____________________
Seeds or Spores: ____________________
Flowers: __________________________
Flowers: __________________________
There are four major groups of plants. You have seen three of these four outside today. We group these
four based on the characteristics listed from their ID cards. I will give you one group in class. You need
to figure out the others and put them in proper order of simplest to most advanced plant groups.
GROUP ONE NAME: ______________________________________________________________
Vascular Tissue: _________________
Seeds/Spores:
_________________
Flowers:
_________________
What plants did you see that are examples of this group? :
GROUP TWO NAME: ______________________________________________________________
Vascular Tissue: _________________
Seeds/Spores:
_________________
Flowers:
_________________
What plants did you see that are examples of this group? :
GROUP THREE NAME: ______________________________________________________________
Vascular Tissue: _________________
Seeds/Spores:
_________________
Flowers:
_________________
What plants did you see that are examples of this group? :
GROUP FOUR NAME:
Vascular Tissue:
Seeds/Spores:
Flowers:
______________________________________________________________
_________________
_________________
_________________
What plants did you see that are examples of this group? :
TREE
A
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
B
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
C
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
D
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
E
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
F
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
G
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
H
Vascular Tissue: NO
Seeds or Spores: SPORES
Flowers: NO
TREE
I
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
J
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
K
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
L
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
TREE
M
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: NO
TREE
N
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: NO
TREE
O
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: NO
TREE
P
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: NO
ANGIOSPERMS
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: YES
Example: Flowering Dogwood Trees
GYMNOSPERMS
Vascular Tissue: YES
Seeds or Spores: SEEDS
Flowers: NO
Example: Pine Trees
SEEDLESS,
VASCULAR
Vascular Tissue: YES
Seeds or Spores: SPORES
Flowers: NO
Example: Ferns
NONVASCULAR
Vascular Tissue: NO
Seeds or Spores: SPORES
Flowers: NO
Example: Mosses
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