Cyanobacteria have been genetically modified to produce
a. oil
b. natural gas
c. isobutanol
d. none of the above

The correct answer is isobutanol.

Genetic engineering is the branch in which a little manipulation in the DNA of the organism can help in production of the desired product. The cyanobacteria belongs to the phylum of bacteria that performs photosynthesis.

The synthesis of isobutanol cab be done by genetically modified cyanobacteria as these modified cyanobacteria produce biofuels, such as isobutanol with the help of solar energy and carbon dioxide. They grow faster as compared to plants and absorb sunlight more efficiently so they can replenish more isobutanol.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.