Question

1.Возьмите четыре стакана и в каждый поместите по 10-15 семян гороха,или фасоли ,или пшеницы.2.В первом стакане семена оставьте сухими.Во второй налейте немного воды так , чтобы семена касались воды. Следите за тем, чтобы не высохла.Поставьте стакан в теплое место.Третий стакан наполоните прокяпиченной остуженной водой так , чтобы семена оказались под водой. Закройте стакан блюдцем.В четвёртый стакан прилейте воды так же, как во второй ,и поставьте его в холодельник.3.Наблюдайте,что происходит с семенами в каждом стакане.В каких стаканах семена проросли?Проанализируйте, какие условия для семян вы создавали в каждом стакане.4.Сделайте вывод ,какие условия необходимы для прорастания семян.Пожалуйста помогите.

Answer 1

Для прорастания семя необходима влага и комфортная температура (больше 5-7 градусов С). Для каждого растения это разная температура. Семена лука репчатого, лука-порея, кольраби, белокочанной и цветной капусты, гороха начинают прорастать уже при 3,5—4°С, семена сельдерея и большинства сортов салата — при 4—4,5°С, свеклы — при 5°, кукурузы — при 10°С, томатов и кабачков — при 11°С, перца — при 13°С, огурца и фасоли — при 14—15°С. А для семян пшеницы? Наилучшая температура для прорастания пшеницы, ржи, ячменя, овса 20-25 градусов С.

 

Answer 2

Conditions for Seed Germination

To investigate the conditions necessary for seed germination, you conducted an experiment using four glasses and different treatments for the seeds. Here are the steps you followed:

1. Take four glasses and place 10-15 seeds of peas, beans, or wheat in each glass. 2. Leave the seeds in the first glass dry, without adding any water. 3. In the second glass, add a small amount of water so that the seeds are in contact with the water. Make sure to monitor the water level to prevent it from drying out. Place the glass in a warm location. 4. Fill the third glass with boiled and cooled water, ensuring that the seeds are submerged. Cover the glass with a saucer. 5. Add water to the fourth glass, similar to the second glass, and place it in the refrigerator.

Observations and Analysis

After observing the glasses over a period of time, you noticed different outcomes for the seeds in each glass. Here are the observations:

- In the first glass, where the seeds were left dry, no germination occurred. - In the second glass, where the seeds were in contact with water in a warm location, germination occurred. - In the third glass, where the seeds were submerged in boiled and cooled water, germination occurred. - In the fourth glass, where the seeds were placed in the refrigerator, no germination occurred.

Based on these observations, you can draw the following conclusions:

1. Dry conditions: Seeds require moisture to germinate. Dry conditions alone are not sufficient for germination to occur. 2. Moist conditions: Seeds need moisture to initiate the germination process. The second glass, where the seeds were in contact with water, showed successful germination. 3. Submerged conditions: Submerging the seeds in boiled and cooled water also allowed for germination to occur. This suggests that water availability is crucial for seed germination. 4. Cold conditions: Cold temperatures, such as those in the refrigerator, can inhibit seed germination. The seeds in the fourth glass did not germinate.

Conclusion

From this experiment, it can be concluded that seeds require moisture and a suitable temperature range for germination to occur. While dry conditions and cold temperatures hinder germination, providing moisture and maintaining a warm environment promote successful seed germination.

Please note that the information provided is based on the experiment described and the general knowledge of seed germination.