Question

A pure tall plant can be differentiated from a hybrid tall plant

• A. By measuring length of plant
• B. By spraying gibberellins
• C. If all plants are tall after self pollination
• D. If all plants are dwarf after self pollination

Answer 1

The correct option is C If all plants are tall after self pollination

A pure tall can be differentiated from a hybrid tall plant when crossed.
Case 1 : TT x TT
F${}_1$ : TT (tall)
Case 2 : Tt x Tt
F${}_1$ : TT, Tt, Tt (Tall) and tt (Dwarf)
If all plants are tall after self pollination, it shows that it is pure tall plant (dominant character).