Question

Bisexual, sessile and bracteate flowers develop acropetally in
A) Raceme
B) Panicle
C) Spike
D) Corymb

Answer 1

Hint: The inflorescence is the arrangement of flowers on a plant. It is a cluster of flowers on a system of branches. The stem holding the inflorescence is called a peduncle. The stalk of each single flower is called pedicel. The flower which is not the part of an inflorescence is called a solitary flower.

Complete answer:
A raceme is an unbranched inflorescence.A raceme is an indeterminate type of inflorescence.
Examples of raceme occur on radish and mustard plants.
A spike is an unbranched, indeterminate inflorescence.Spike bears sessile flowers.Sessile flowers are the flowers which attach directly without stalks.In spike there are bisexual and sessile flowers.
The acropetal is the arrangement of flowers on the plant’s pedicel in the form that the new flowers and buds are at apex and relatively older flowers are placed at the base.The acropetal arrangement is seen in racemose inflorescence.
In spike the sessile flowers have acropetal arrangement. It is a type of racemose inflorescence.
Example of spike is Malabar nut (Justicia Adhatoda) and Achyranthes.
In spike flowers develop directly from the stem. They are not born on pedicles.

Hence the correct answer is option ‘C’ Spike

Note:Photosynthesis may be defined as a process by which organisms and green plants form nutrients from carbon dioxide and water. The byproduct obtained from photosynthesis in plants is Oxygen.