Answer: It is the carbon dioxide assimilation or carbon fixation reactions or the Calvin cycle.
Explanation: Carbon dioxide assimilation reactions are light independent reactions of photosynthesis. They do not require light to occur, thus they occur in the dark. The carbon dioxide assimilation reactions are driven by ATP and NADPH that are produced in the light dependent reactions of photosynthesis. The carbon dioxide assimilation reactions are the second stage of photosynthesis. It involves the incorporation of three molecules of carbon dioxide into three molecules of ribulose 1,5-bisphosphate in a cyclic pathway known as the Calvin cycle. In these reactions, triose phosphates are produced which serve as precursors for synthesis of glucose and other related substances such as starch.
Answer:
1. C
2. B
Explanation:
1. When a plant cell looses some water due to dehydration or being placed in a hypertonic solution, the term used to describe the cell's intial, not severe shrinkage is 'flaccid'.
Here, it's clear that the cell shrank so much that the cell membrane pulled away from the cell wall. The correct term for this severe shrinkage is 'plasmolysed'.
We don't use 'wilted' as a term to describe a cell. We use it to describe the plant as a whole.
2. This is the function of each. Water and ions in xylem and sugars like sucrose in phloem.
Because the enzyme efficiency peaks at higher temperatures, the enzyme will work best at medium to high temperatures.
Answer:
B. runoff of nitrates from fertilizers applied to the golf course
Explanation:
Algal bloom is defined as the rapid growth of algae in freshwater or marine water. Algal bloom is green or yellowish in color that cover the top layer of water systems.
Algal bloom in the given case is caused by the excess of nutrients that is nitrates from fertilizers into waters and higher concentrations of nitrates causes uncontrollable growth of algae.
Algal blooms are harmful for environment as they may produce toxins and can block the sunlight from reaching the plants and animals in the water systems.
Hence, the correct answer is "B. runoff of nitrates from fertilizers applied to the golf course".