Is a network of flattened membrane sacs and the small, round membrane-coated vesicles that arise from them. the smooth portion of this organelle constructs fatty acids and phospholipids, which are needed to produce membranes. the rough portion of this organelle is covered with ribosomes, which are small, globular structures composed of rna and protein

The organelle described above is called the endoplasmic reticulum.
The rough portion of this called the granulated endoplasmic reticulum and the ribosomes attached to it enable it to produce proteins.
The smooth portion of this organelle does not contain ribosomes and it has a role in the synthesis of lipids. 

Plants grown in full sunlight produced more biomass, tillers and leaves, and allocated a larger proportion of their total production to roots than plants grown in shade. Thus, shading reduces the rate of growth, number of tillers, and ability to replace leaf area lost to herbivory for B. tectorum.

The shade-tolerant plants are capable of photosynthesis using light at such wavelengths. Shade-tolerant plants are thus adapted to be efficient energy-users. In simple terms, shade-tolerant plants grow broader, thinner leaves to catch more sunlight relative to the cost of producing the leaf.

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