‘All elements that are present in a plant need not be essential to its survival’. Comment.

Name the natural auxins present in plants.

_____is present in plant cell only.

The green pigment present in the plant is ……….

Which of the following statements are true? If false, correct them: (a) Boron deficiency leads to stout axis. (b) Every mineral element that is present in a cell is needed by the cell. (c) Nitrogen as a nutrient element, is highly immobile in the plants. (d) It is very easy to establish the essentiality of micronutrients because they are required only in trace quantities.

Selenium is essential for plants:

Name the elements present in phloem.

Non - essential element in plant is

True or False. Green plants need sunlight.

How many elements are known at present?

Comment on plant genome project .