Germination Experiments

Q.

Give reasons for the following:

Why is it better to transplant a seedling in the evening and not in the morning?

Q.

Three matured air dried bean seeds are taken and tied to a glass slide at three positions as shown. This slide is kept in a beaker containing water in a manner that the top seed is well above water, the middle one is just at the water level and the bottom one is deep in water. The experimental set up is left in a warm place for a few days. What will you notice by the end of the process?

1. Top and middle seed will germinate and the one at the bottom will not germinate.

2. Bottom and top seed will germinate and the middle one will not germinate.

3. All the seeds will germinate.

4. The middle seed will germinate, the top and the bottom seeds will not germinate.

Q.

Give reasons for the following.

Dals kept in a bottle do not germinate.

Q.

Take two beakers and label them A and B. Place some green gram seeds on moist cotton wool in each of two beakers. Keep beaker A in the refrigerator and beaker B in an ordinary room. What will you observe in this process?

1. Seeds in beaker A will germinate, but seeds in beaker B will not germinate

2. Seeds in beaker B will germinate, but seeds in beaker A will not germinate

3. Seeds in both the beaker A and B will germinate

4. Seeds in both the beaker A and B will not germinate

Q.

What can we infer from three bean experiment?

1. Seeds require both air and water along with suitable temperature for germination

2. Seeds require only water and suitable temperature for germination

3. Seeds only require soil for germination.

4. Seeds require only air and suitable temperature for germination

Q.

Temperature below the optimum level (i)________ the growth of the embryo. Whereas temperatures much higher than the optimum range (ii)_______ the embryo.

1. (i) inhibits (ii) destroys

2. (i) destroys (ii) inhibits

3. (i) enhances (ii) destroys

4. (i) enhances (ii) inhibits

Q. ............... is the most important factor required for the seeds to sprout.

1. Temperature
2. Moisture
3. Humidity
4. Air

Q.

Name the chemical used in the experiment which absorbs oxygen.

1. Pyrogallic acid

2. Sulfuric acid

3. Acetic acid

4. Calcium carbonate