Answer:
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Explanation:
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Compare ferns, gymnosperms, and angiosperms by writing each characteristic in the box underneath the correct plant type. • repro
duce with cones • reproduce with spores • reproduce with flowers • existed the longest in Earth history • newest type of plant in Earth history • has needle-like, waxy leaves 1)
1 answer:
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Answer: The value is 0.664
Explanation:
Distance travelled by solvent front = (7.7-1.45)cm = 6.25 cm
Distance travelled by unknown = (5.6-1.45) cm = 4.15 cm
The retention factor or the value is defined as the ratio of distance traveled by the unknown to the distance traveled by the solvent front.
Thus the value is 0.664