You have conducted an experiment using litterbags to assess the effect of lignin content on leaf decomposition rate. you selected 6 tree species with a range of leaf lignin levels. which of the following is a plausible prediction for your study?

a. the biomass of leaf litter bags will increase more in plants with higher leaf lignin content.
b. the biomass of leaf litter in the bags will be greater in leaves with higher lignin content after the same length of time.
c. the leaf litter bags cannot be used to conduct this experiment.
d. the biomass of leaf litter in the bags will be lower in leaves with higher lignin content after the same length of time.

B. The biomass of leaf litter in the bags will be greater in leaves with higher lignin content after the same length of time.

Explanation:

Lignin is a major, one of the most slowly decomposing components of dead vegetation, including leaf litters. The lignin content has been found to have a high correlation with litter decomposition.

Hence, at the end of the experiment, the litter bag containing leaf litters with higher lignin contents will be expected to weigh more than those with lower lignin contents.

The correct option is B.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.