This set of Fruits Processing Multiple Choice Questions & Answers (MCQs) focuses on “Acceleration of Plant Metabolism and Browning”.
1. What is primary metabolism in plants?
a) Central carbon metabolism
b) Central nitrogen metabolism
c) Central energy metabolism
d) Central lipid metabolism
View Answer
Explanation: The primary metabolism is also known as central carbon metabolism. It helps in the synthesis of intermediate compounds. These compounds act as precursors for plant secondary metabolism. They play an important role in the plant’s interaction with its surroundings.
2. What are the two major metabolic processes in plants?
a) Photosynthesis, respiration
b) Photosynthesis, transpiration
c) Photosynthesis, transportation
d) Transpiration, respiration
View Answer
Explanation: A series of metabolic processes happen in different parts of the plants such as leaves, stems, and roots. These processes include photosynthesis, respiration, and nitrogen fixation. Photosynthesis is a series of complex processes that converts light energy, carbon dioxide, and water into glucose.
3. Do plants have metabolism?
a) True
b) False
View Answer
Explanation: Plant metabolism is a complex event of all the processes like photosynthesis, respiration, synthesis and degradation of organic compounds. Secondary metabolism simplifies the primary metabolism in plants. This primary metabolism contains chemical responses that help in plant growth.
4. What kind of metabolism is photosynthesis?
a) Two-part metabolic process
b) Three-part metabolic process
c) Four-part metabolic process
d) Five-part metabolic process
View Answer
Explanation: Photosynthesis builds sugars out of smaller molecules, which is called as anabolic pathway. Photosynthesis is a two-part metabolic process. The two parts of the biochemical pathway of photosynthesis are the energy-fixing reaction and the carbon-fixing reaction.
5. Which of the following is the biochemical pathway of photosynthesis?
a) Carbon-fixing reaction
b) Nitrogen-fixing reaction
c) Oxygen-fixing reaction
d) Carbon dioxide-fixing reaction
View Answer
Explanation: There are two parts of the biochemical pathway of photosynthesis. They are the carbon-fixing reaction and the energy-fixing reaction. Glucose and oxygen are the final products of photosynthesis. Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas.
6. Which of the following is the end product in photosynthesis?
a) Carbon dioxide
b) Oxygen
c) Nitrogen
d) Carbon dioxide, oxygen, nitrogen
View Answer
Explanation: Photosynthesis is a process takes place in green plants. It converts light energy into chemical energy. During photosynthesis light energy is captured and used for converting carbon dioxide, water and minerals into oxygen and organic compounds.
7. What is the first step of photosynthesis?
a) Light dependent reaction
b) Oxygen dependent reaction
c) Nitrogen dependent reaction
d) Carbon dioxide dependent reaction
View Answer
Explanation: The first stage of photosynthesis is called the light-dependent reaction. The sunlight excites the electrons in the chlorophyll pigment. The plant uses this energy to create the energy carrier molecules ATP and NADPH, which are crucial for carbon fixing during the second stage.
8. Which part of photosynthesis does not require light?
a) Carbon-fixing reaction
b) Nitrogen-fixing reaction
c) Oxygen-fixing reaction
d) Carbon dioxide-fixing reaction
View Answer
Explanation: The part of photosynthesis that does not require sunlight responses is called the carbon fixation phase. It is divided into two steps known as the light and the carbon fixation. The latter phase occurs in the chloroplast stroma and does not need sunlight to occur.
9. Are these statements about the respiration in plants true?
Statement 1: Plants breathe throughout its life span both during the day and night.
Statement 2: Respiration of stem occurs during day.
a) True, False
b) True, True
c) False, True
d) False, False
View Answer
Explanation: Plants respire all the time, day and night. But photosynthesis only occurs during the day when there is sunlight. Respiration uses oxygen and glucose to power the activities of the cell. Plants respire during the night, plants release carbon dioxide and take in oxygen and oxidation of stored food by absorbed oxygen takes place.
10. Where does cellular respiration occur in plants?
a) Mitochondria
b) Nucleus
c) DNA
d) Plasma
View Answer
Explanation: Cellular respiration is the process that occurs in the mitochondria of plants. It break downs sugar in the presence of oxygen to release energy in the form of ATP. This process releases carbon dioxide and water as waste products.
11. What do plants use energy from respiration for?
a) For growth
b) For transpiration
c) For ripening
d) For preventing microbial growth
View Answer
Explanation: Photosynthesis is the process by which plants use light energy to convert carbon dioxide and water into sugars. Respiration occurs when glucose combines with oxygen to produce useable cellular energy. This energy is used to fuel growth and all of the normal cellular functions.
12. What is catabolism in plants?
a) Responsible for breaking complex molecules
b) Responsible for breaking oxygen molecules
c) Responsible for breaking nitrogen molecules
d) Responsible for breaking carbon molecules
View Answer
Explanation: Catabolism is the type of metabolism which is responsible for breaking complex molecules into simpler components. During this process, the energy is released from the broken bonds of the large molecules. This energy is stored as adenosine triphosphate (ATP).
13. What is the purpose of amino acid catabolism in plants?
a) For growth
b) For transpiration
c) For ripening
d) For preventing microbial growth
View Answer
Explanation: The role of amino acids in plant metabolism is important. It acts as multitude of metabolic reactions related to various physiological processes, such as plant growth and development, generation of metabolic energy or redox power. It also resists abiotic and biotic stress.
14. What metabolic pathway is anabolic?
a) Photosynthesis
b) Transpiration
c) Respiration
d) Transpiration
View Answer
Explanation: Photosynthesis is the process which builds sugars out of smaller molecules. It follows building up or anabolic pathway. The unique aspect of this form of carbon assimilation is the conversion of light energy into the chemical energy of newly synthesized sugar molecules.
15. What metabolic pathway is catabolic?
a) Photosynthesis
b) Transpiration
c) Respiration
d) Transpiration
View Answer
Explanation: Chemical reactions in the cell occur in a sequence of stages called a metabolic pathway. Cellular respiration is the process which breaks sugar down into smaller molecules. It follows breaking down or catabolic pathway. It is required for maintaining the cell’s energy balance.
Sanfoundry Global Education & Learning Series – Fruits Processing.
To practice all areas of Fruits Processing, here is complete set of 1000+ Multiple Choice Questions and Answers.
If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]
