Question

Racemose inflorescence having branched peduncle is
A) Panicle
B) Corymb
C) Corymbose- raceme
D) Spikelet

Answer 1

Hint: In racemose inflorescence the main axis of receme continues to grow indefinitely and termination in flowers do not occur. Due to this feature it is also known as indeterminate inflorescence. Its peduncle is monopodial. There is less common grouping of flowers. Flowers do not protect newly formed fruit.

Complete Answer:
>Option A is panicle which is the correct answer because it has branched peduncle and branches have pedicellate flowers. In compound raceme or panicle the main axis of receme is branched and the lateral branches bear the flowers.
>Option B is corymb .This is the wrong option because lower flowers have long pedicles than upper flowers so the flowers are more or less to the same level and the main axis is short.
>Option C is also wrong because young flowers seem to arrange like corymb but at maturity lower flowers do not bring them to the level of upper one.
Small and special spikes are present on spikelets. Flowers are produced in the axil of fertile bracts called lemma. Example: wheat.

Additional information:
Main characters of raceme inflorescence are as following:
->Monopodial peduncle
->Indefinite growth of main axis
->At the base of peduncle first flower is formed
->Centripetally arranged flower
->Flowers do not protect newly formed fruit .
->Acropetal succession

Note:Racemose inflorescence is of following types:-
1.Receme : Unbranched main axis with pedicellate flowers in acropetal succession
2. Pinnacle : There are several branches of inflorescent
3.Spike : it is unbranched and indeterminate.
4.Cetkin : flowers are arranged in a spiral manner.
5.Corymb : its central axis is short and its top looks like an umbrella.
6. Umbel : short stem and flowers are arranged at same length at the top and give appearance of umbrella
7. Capitulum:sits flowers are tightly packed together and the central axis is flattened.