Choose 2 answers for each question(3 questions) 1. Carbon fixation…
Question Answered step-by-step Choose 2 answers for each question(3 questions) 1. Carbon fixation… Choose 2 answers for each question(3 questions)1. Carbon fixation varies in different types of plants. Which statements correctly describe the pathway of CO2 in the photosynthetic process in plants?Group of answer choicesA. There is higher carboxylation rate of Rubisco when the stomata are closed and there is an accumulation of oxygen in the stomatal cavity.B. When the stomata are open, CO2 enters, while oxygen which is a by-product of photosynthesis, and water vapour diffuse out, minimising the occurrence of photorespiration.C. The C4 photosynthetic pathway does not require the Calvin Cycle to produce sugar because PEP carboxylase is already efficient in fixing CO2.D. C4 and CAM photosynthetic pathways are essentially similar, such that both have CO2 concentrating mechanisms occurring in separate cells.E. When photorespiration occurs, the output of photosynthesis is reduced because carbon already fixed in the Calvin Cycle is lost. 2. Which of the following statements are true about vernalisation?Group of answer choicesA. Winter cereals have an obligate vernalisation requirement.B. Time to flowering is extended by exposure to cold temperature.C. Some plants are sown in late spring to escape vernalisation.D. Increasing day length decreases vernalisation time.E. True spring crops requires vernalisation. 3. Below are statements about plant development and phenology. Which of the following statements are NOT correct?Group of answer choicesA. True spring crops do not need to be exposed to low temperature to start flowering.B. Late-maturing plants are not sensitive to day length, and often do not require vernalisation.C. The number of leaves is the most important marker to identify the Zadok’s phenological scale for cereals.D. Maximal yield potential of barley can be determined based on the spikelet stage.E. It is important to determine the flowering window to avoid frost risk. Science Biology AGRI 20026 Share QuestionEmailCopy link Comments (0)
