QUES: Plants synthesize a number of unique polymers like the polysaccharide molecules cellulose, pectin and xyloglucan from which the land plant cell wall is constructed. Vascular land plants make lignin, a polymer used to strengthen the secondary cell walls of xylem tracheids and vessels to keep them from collapsing when a plant sucks water through them under water stress. Lignin is also used in other cell types like sclerenchyma fibers that provide structural support for a plant and is a major constituent of wood. Sporopollenin is a chemically resistant polymer found in the outer cell walls of spores and pollen of land plants responsible for the survival of early land plant spores and the pollen of seed plants in the fossil record. It is widely regarded as a marker for the start of land plant evolution during the Ordovician period. The concentration of carbon dioxide in the atmosphere today is much lower than it was when plants emerged onto land during the Ordovician and Silurian periods. Many monocots like maize and the pineapple and some dicots like the Asteraceae have since independently evolved pathways like Crassulacean acid metabolism and the C4 carbon fixation pathway for photosynthesis which avoid the losses resulting from photorespiration in the more common C3 carbon fixation pathway. These biochemical strategies are unique to land plants.

What polymer is found in spores and pollen?
What is the answer?
ANS: Sporopollenin
QUES: Once again his spirits were raised when the unit under his command received orders overseas to France. This time his wishes were thwarted when the armistice was signed, just a week before departure. Completely missing out on the warfront left him depressed and bitter for a time, despite being given the Distinguished Service Medal for his work at home.[citation needed] In World War II, rivals who had combat service in the first great war (led by Gen. Bernard Montgomery) sought to denigrate Eisenhower for his previous lack of combat duty, despite his stateside experience establishing a camp, completely equipped, for thousands of troops, and developing a full combat training schedule.

What decoration did Eisenhower receive as a result of his First World War service?
What is the answer?
ANS: Distinguished Service Medal
QUES: Coca-Cola's archrival PepsiCo declined to sponsor American Idol at the show's start. What the Los Angeles Times later called "missing one of the biggest marketing opportunities in a generation" contributed to Pepsi losing market share, by 2010 falling to third place from second in the United States. PepsiCo sponsored the American version of Cowell's The X Factor in hopes of not repeating its Idol mistake until its cancellation.

In hopes of not repeating another mistake, which show did PepsiCo sponsor?
What is the answer?
ANS:
The X Factor