Julius Von Sachs Experiment

Q. Julius von Sachs observed that

1. When leaves are kept in darkness, they consumed starch
2. When leaves are exposed to sunlight, they consumed starch
3. When leaves are exposed to sunlight, they produced starch
4. When leaves are kept in darkness, they retained starch

Q.

Nicotine, the main alkaloid in tobacco is synthesized in plants by:

1. Stem

2. Leaves

3. Roots

4. All of the above

Q. The evidence for the production of glucose in plants was given by

1. Julius von Sachs
2. Joseph Priestley
3. Cornelius van Niel
4. Theodore de Saussure

Q. The postulations made by Julius Von Sachs were:

1. Production of glucose occurs in the green parts of the plant
2. Glucose is stored as starch
3. Chlorophyll is located in special bodies called chloroplasts
4. All of the above

Q. Julius von Sachs observed that

1. When leaves are kept in darkness, they retained starch
2. When leaves are kept in darkness, they consumed starch
3. When leaves are exposed to sunlight, they produced starch
4. When leaves are exposed to sunlight, they consumed starch

Q. The apparatus shown in the following diagram is Garreau's photometer designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Before keeping the leaf in between the cups, anhydrous calcium chloride $\left(Cac{l}_2\right)$ contained in two small vials were weighed and placed in both the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After few hours, $Cac{l}_2$ vials were taken out and weighed again.
What do you mean by transpiration here?

Q. Julius von Sachs demonstrated that

1. Starch was produced by the assimilation of oxygen
2. Starch was produced by the assimilation of carbon dioxide
3. Starch was produced by the assimilation of water
4. Starch was produced by the assimilation of ight

Q. The first person to connect the appearance of starch with the fixation of carbon in the presence of light was

1. von Sachs
2. Priestly
3. van Niel
4. Engelmann

Q. The evidence for the production of glucose in plants was given by

1. Julius von Sachs
2. Joseph Priestley
3. Cornelius van Niel
4. Theodore de Saussure

Q. We can increase the rate of photosynthesis during experiments by

1. Taking a bigger funnel
2. Adding $H_{2}O$
3. Taking a big beaker
4. Adding $NaHC{O}_3$

Q. The postulations made by Julius Von Sachs were:

1. Production of glucose occurs in the green parts of the plant
2. Glucose is stored as starch
3. Chlorophyll is located in special bodies called chloroplasts
4. All of the above