Germinating peas grow rapidly. This growth process requires a lot of energy for cell division, so the rate of respiration in germinating peas is high. One way to measure the rate of respiration is to measure the heat produced in the process. Vacuum flask – to prevent heat loss from the container.
Why do germinating peas have a higher respiration rate?
The affect of germination on the rate of cell respiration in peas is that in peas that are germinated, the rate of cell respiration is higher because the cells are growing/going through mitosis which requires energy/ATP in order to be carried out which is generated through the process of cellular respiration.
Why do germinating seeds respire more than dormant seeds?
Have you ever wondered why seeds and nuts have so many calories? The seed will use those calories to survive during dormancy and to germinate. To fulfill the high-energy needs of a germinating seedling, cellular respiration increases as a seed emerges from dormancy and begins germinating.
Why do the germinating peas consume more oxygen than the dry peas?
Why? Germinating peas consume more oxygen because they are growing and are more active than non-germinating peas.
Why do germinating plants consume more oxygen?
This oxygen is used to produce energy to facilitate the repair process. The repair is necessary because only cells with normal water content can divide and grow. After the repair process is finished and the seeds are fully saturated, the growth begins and the oxygen consumption increases.
Why do germinating seeds go through cellular respiration while plants do not?
It is necessary for germinating seeds to undergo cellular respiration in order to acquire the energy they need for growth and development. Unlike their mature relatives, seeds do not yet have the necessary photosynthetic abilities needed to produce their own energy sources.
Why does germination affect cellular respiration?
The start of germination places substantial energy demands on the seed as plant growth processes take shape. As a result, cellular respiration rates increase to accommodate the cell-building activities required to break open the seed and produce the initial root and stem structures.
Why are germinating seeds used in the investigation of respiration?
Germinating seeds are used in the experiment of the release of carbon dioxide during respiration because they respire a lot more than a plant that has already grown. A new plant will require more energy and oxygen to get started.
Do bean seeds respire faster than pea seeds?
Mung beans will respire more than an equal number of germinating peas. … The germinating peas do, in fact, respire more than germinating mung beans.
Why does higher temperature increase cellular respiration?
The increase in temperature enhances the rate of cellular respiration. It is due to the heat speeds up the reactions, means the kinetic energy is higher. It means reactions speed up and rate of cellular respiration increases. When temperature decreases, in order to conserve energy, cellular processes slow.
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Why do cells respire at different rates?
The respiratory quotient depends upon the type of respiratory substrate used during respiration. Different respiratory substrates have different numbers of carbon and oxygen atoms in their molecules. So, during respiration the amount of carbon dioxide evolved from per gram weight of the substrate also differs.
How do germinating seeds respire?
Seeds don’t breathe in the same way mammals do. Instead, they breathe at a cellular level. In cellular respiration, the seed uses stored sugars, water and oxygen to burn energy at a cellular level and germinate, or sprout. Respiration increases dramatically as the seed sprouts.
Why did the germinating seeds consume more oxygen than the non-germinating seeds?
The germinating seeds will have a higher rate of oxygen consumption than the non-germinating seeds because the germinating seeds are living and need extra oxygen so that they can grow, whereas the non-germinating seeds are not nearly as active and won’t respire as much.
Do non germinating peas respire?
Non-germinating seeds, however, are dormant and use very little respiration. Some respiration must occur in order for the seed to live. The rate of cellular respiration will be greater in germinating peas than in dry peas, and temperature will have a direct effect on this rate.
What effect does germination have on the amount of cellular respiration in this simulation?
what is the effect of germination on the rate of cell respiration? When a pea is germinating, it grown and the need for oxygen grows, too, so the more germinating, the rate increases. what is the effect of temparature on the rate of cell respiration in peas? Cellular respiration rate is slower at colder temperature.
What describes the relationship between photosynthesis and respiration?
Photosynthesis converts carbon dioxide and water into oxygen and glucose. … Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Why do plants respire?
Plants are no exception. They need to respire virtually all the time in order to supply their energy needs. They are not able to use the ATP generated in photosynthesis for these purposes. … However, moving sugars around the plant seems to require energy as dead phloem cells do not transport sugars.
Why do plants grow faster at higher temperatures?
Temperatures higher than needed increase respiration, sometimes above the rate of photosynthesis. Thus, photosynthates are used faster than they are produced. For growth to occur, photosynthesis must be greater than respiration.
What factors affect cellular respiration?
The eight environmental factors effecting the rate of respiration are: (1) Oxygen Content of the Atmosphere (2) Effect of Temperature (3) Effect of Light (4) Effect of Water Contents (5) Effect of Respirable Material (6) Effect of Carbon Dioxide Concentration (7) Protoplasmic Conditions and (8) Other Factors.
How does temperature affect respiration in plants?
The cellular respiration in plants increases with an increase in temperature until the point– when a further increase in temperature will lead to tissue deterioration. When the temperature is decreased, the molecular energy of the reactants is decreased. Thus, fewer collisions are observed.
What happens if the rate of respiration is more than the rate of photosynthesis?
Answer : If the rate of respiration exceeds the rate of photosynthesis, the plant will be using more oxygen than it can produce. Thus, the plant will be starved of food supply and finally die of starvation.
Why is it important for plants to exceed the rate of respiration?
The compensation point So the rate of respiration is greater than the rate of photosynthesis. So this means there is an overall excess of carbon dioxide produced during respiration. … This means more carbon dioxide is being absorbed by the plant for photosynthesis.
Which show has higher rate of respiration?
Germinating seeds exhibit the highest rate of respiration.
How do peas respire?
Peas will carry out respiration to release the energy needed for growth and heat energy is produced as it is an exothermic reaction. The peas are also covered in microbes which also respire producing heat. The germinating peas which have been disinfected will produce less heat than Flask A.
Why do higher organisms respire aerobically?
All the organisms that obtain energy by aerobic respiration cannot live without the oxygen. This is because if there is no oxygen, they cannot get energy from the food which they eat. Aerobic respiration produces more energy because a complete breakdown of glucose occurs during respiration by the use of oxygen.
Which of the two pea types germinating or non germinating consumes the most oxygen?
Germinating peas consume the most oxygen because they are active, unlike the nongerminating peas which are dormant/inactive. Since the germinating peas are active they need a lot of oxygen to continue doing cellular respiration. What was the effect of temperature on pea respiration?
Would a reptile or mammal respire faster?
As temperature rises, so will the respiration rate of a reptile. As temperatures rises from freezing, the respiration rate of a mammal will actually go down because less energy is needed for heating.
