Question

The inflorescence is a collection of
A. Petals
B. Stamens
C. Flowers
D. Carpels

Answer 1

Hint:-in plants there are so many types of arrangement I.e arrangement of petal, arrangement of flower , arrangement of carpel etc.on the lateral or main axis . So the arrangement is termed as a different name also.. The flowers contain an axis also called or represented as a floral axis which may be lateral stem or may be main stem of plant, it depends upon the order of arrangement of flowers in the axis.
Complete Answer:-
RACEMOSE/INDEFINITE -In this type of inflorescence the main axis continues to grow and does not terminate in a flower and flowers are borne laterally in an acropetal order /acropetal succession (Where old flowers are arranged at the lower side and young flowers are at the upper side.
This is of following types
1.Raceme – In this type of inflorescence, peduncle (main axis or floral axis) is elongated and flowers are pedicellate.
Eg. Radish, mustard
When peduncle is branched and each branch near pedicellate flowers like raceme and are arranged in an acropetal manner then it is known as compound raceme or Raceme of racemes or panicle.
Eg. Gulmohar, Cassia.
Spike- In this type of inflorescence peduncle is elongated but flowers are sessile (without pedicel).
Eg. Achyranthes.
When the peduncle is branched and each branch bears spike-like inflorescence then the small branch having flowers is called spikelet and this arrangement is called spike of spikelet.

E.g. Grass family (Gramineae = Poaceae).


CYMOSE/DEFINITE-
In this type of inflorescence, the main axis/peduncle terminates in a flower hence is limited in growth. In it, the older flowers are present at the upper side and young flowers are arranged towards the base. This type of arrangement is called a basipetal succession/basipetal order.
It is of following types
1.Uniparous cyme/Monochasial cyme- The peduncle ending in a flower producing one lateral branch at a time which also ends in a flower. It is of two types,
(a) Helicoid cyme - When all lateral branches develop on the same side of the peduncle forming a sort of helix, then it is called a helicoid cyme. Eg. Heliotropium.
(b)Scorpioid cyme- In this type one lateral branch
develops on one side and the other branch develops
opposite to the first one, i.e. they lie alternately to each other. Eg. Begonia
   2.Biparous cyme / Dichasial cyme – In this type of inflorescence peduncle ends in a flower and from the basal part of peduncle two lateral branches arise which also end in a flower, now this same arrangement occurs on these lateral Branches.
Eg. Bougainvillea, jasmine
3.Multiparous cyme/Polychasial cyme- In this type of inflorescence peduncle ends in a flower and from the base of it many lateral branches arise, which also terminate in flower, this arrangement now also occurs on those lateral branches.
Eg. Calotropis


Generally arrangement of flowers on the floral axis is called inflorescence.
So C is the correct option.

Note:- It is just a definition of inflorescence so i.e. the arrangement of flowers on the floral axis of the lateral branch or main beach is represented as inflorescence. But they’re different types of inflorescence mainly racemose and cymose etc. In some case like grape mixed or Thyrsus, inflorescence is found