If we cross pure-bred tall (dominant) pea plant with pure-bred dwarf (recessive) pea plant

[AmarCBSE]

If we cross pure-bred tall (dominant) pea plant with pure-bred dwarf (recessive) pea plant we will get pea plants of F1 generation. If we now self-cross the pea plant of F1 generation, then we obtain pea plants of F2 generation.

1. What do the plants of F1 generation look like?
2. State the ratio of tall plants to dwarf plants in F2 generation.
3. State the type of plants not found in F1 generation but appeared in F2 generation, mentioning the reason for the same.

[AmarCBSE]

1. Plants of F generation are all Tall.
2. Tall plants: Dwarf plants = 3:1
3. Dwarf plants: It is due to in F1 generation. Tall is a dominant trait but in F2 generation, two copies of ‘tt’ recessive traits appear as dwaft plant.