How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers?

The term 'polyadelphous' is related to

Which one of the following statements is wrong?

Conifers are adapted to tolerate extreme environmental conditions because of

The label of a herbarium sheet does not carry information on

Select the wrong statement.