Select the incorrect statement.

1.	Transport of molecules in phloem can be bidirectional.
2.	The movement of minerals in the xylem is unidirectional.
3.	Unloading of sucrose at the sink does not involve the utilization of ATP.
4.	Elements most easily mobilized in plants from one region to another are phosphorus, sulfur, nitrogen, and potassium.

In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as:

1. Ammonia

2. Glutamate

3. Nitrates

4. Ureides

Which of the following elements helps in maintaining the structure of ribosomes?

1. Magnesium

2. Zinc

3. Copper

4. Molybdenum

During non-cyclic photophosphorylation, when electrons are lost from the reaction center at PS II, what is the source which replaces these electrons?

Which of the following statements is incorrect?

Pyruvate dehydrogenase activity during aerobic respiration requires:

1. Calcium

2. Iron

3. Cobalt

4. Magnesium

Who coined the term 'Kinetin'?

1. Skoog and Miller

2. Darwin

3. Went

4. Kurosawa

Inhibitory substances in dormant seeds cannot be removed by subjecting seeds to:
1. Gibberellic acid
2. Nitrate
3. Ascorbic acid
4. Chilling conditions

Match the following concerning the activity/function and the phytohormone involved:

Select the correct option from following:

The intrinsic factor that helps in the absorption of vitamin ${\mathrm{B}}_{12}$ is secreted by:

1. Goblet cells

2. Hepatic cells

3. Oxyntic cells

4. Chief cells