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Group3
Spores
Ferns
What is ferns?
produce spores for reproduction
The spores-bearing structures are usually located on the underside of the leaves
What is spores?
a reproductive cell
develop into a new individual without fusion with another reproductive cell
produced by bacteria, fungi, algae, and plants.
Specimen A
Specimen A
Sporangium
Growing spore -->Completely cover
Mature Sporangium --->Look shrinked
Specimen A
-Spore-
Chisel shape
Attach to the leave
About 50 micro-meter
Specimen B
Specimen B
-Sporangium-
Hair on it
Ball shape
Curved shape
Specimen B
-spores-
Spiky shape
About 30 mirco-meter
Specimen C
Specimen C
-spores-
Hair on it
Attach the leave
About 45micro-meter
Specimen D
Specimen D
-sporangium-
Hair - protect spores
Growing- curve shape and ball shape
Mature - burst
Specimen D
-spores-
Hair attach the leave
About 40micro-meter
Comparison
Sporangium
With hair Without hair
B,D A,C
Smaller Ball shape
------>Closely packed
Larger Line shape
------>Closely packed
Comparisons
A B C D
SporeHair--->stick/attach to the leave
--->stick to the insects' legs -->pollination
Comparison
A B C D
Spore------>Small in size ,Very light weight
For reproduction
Comparison
A B C D
Spore Under the leave Rainwater rush away the spores
Fall to the land directly
Thank you<Close file>
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