As plants and trees grow, they take carbon dioxide from the atmosphere and turn it into sugars through photosynthesis.
D. X represents glucose and Y represents carbon dioxide
Answer: The cell cycle is the most important process in the growth of an organism.
Explanation: The cell cycle is the fundamental process by which a cell matures, synthesizes DNA, and divides to form daughter cells. Somatic cells divide regularly. All multicellular organisms use cell division for growth, maintenance and repair of cells and tissues. Unicellular organisms use this process to reproduce. The cell cycle affects our daily lives. Most cancers are a result of inappropriate cell division arising due to aberrations in normal cell cycle regulation. Stem cell biology and regulation in growth of organs also involves extensive study of cell cycle.
It is a complex of several proteins, pigments and other co factors that execute the primary energy conversion reactions for photosynthesis
The answer for this one is b) Looping of DNA
