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.
Why do germinating peas consume more oxygen than worms?
Germinating peas consume more oxygen because they are growing and are more active than non-germinating peas.
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.
How does germination affect oxygen consumption?
The rate of oxygen consumption by the seed is proportional to the rate of growth of biomass. In turn, the latter is proportional to the rate of change in the total number of mitochondria in all cells within the seed. There is a maximal number of mitochondria that the seed is able to produce within the closed container.
Why do germinating seeds respire more than non germinating seeds?
Seeds do not possess the required photosynthetic abilities/resources to synthesize their own energy. Hence, there is a high rate of consumption of oxygen in seeds that are germinating as they are living and need extra oxygen to grow.
Why is the reading lower in germinating peas than in the dry peas explain?
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.
Why do non-germinating peas consume less oxygen?
The non-germinating peas shows hardly any consumption of oxygen. Since the germinating peas are germinating or sprouting, they require a more extensive amount of energy or ATP. This allows them to have high oxygen consumption rates or respiration rates in this experiment.
Do plant seeds consume more oxygen at higher temperatures than at lower temperatures?
Answer: Plant seeds do consume more oxygen at a higher temperature than lower temperature. As explained above, respiration does slow down when the temperatureis reduced, and respiration is increased as the temperature rises.
What is the purpose of KOH in this experiment?
Answer. KOH is a good absorbent. KOH absorbs the carbon dioxide released by the germinating seeds and a partial vacuum is created because of the loss of carbon dioxide in the flask. This vacuum causes the water level in the delivery tube to rise up.
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.
How do seeds obtain oxygen?
The seed continues to breathe until the plant can make its own food via the process of photosynthesis. The oxygen comes from tiny pockets of air in the soil. Most loose soil has plenty of air for seeds, but if the seed is surrounded by water, it will not be able to obtain enough oxygen to germinate.
What are the factors affecting seed germination?
Environmental factors such as temperature, light, pH, and soil moisture are known to affect seed germination (Chachalis and Reddy 2000; Taylorson 1987). Burial depth of seed also affects seed germination and seedling emer- gence. Weed seedlings may emerge from the soil surface to 15 cm deep (Bello et al.
What happens to seeds which do not have access to oxygen?
Anaerobic respiration produces small amounts of energy and may keep the seedling alive for several days. Most seedlings can tolerate 3 or 4 days of flooding, but will often succumb to periods longer than 7 days. Plant structures experiencing reduced oxygen availability produce several toxic substances.
Why do germinating peas need to do aerobic respiration versus just using photosynthesis for their energy needs?
The food stored in the seed provides the pea plant cells with the energy they need to maintain themselves and divide, since the plant is not yet capturing sunlight through photosynthesis. The pea plant cells depend on cellular respiration to furnish them with the energy they need to stay alive and grow.
