Question

Pedicellate flowers arising from a single point form.
a. Umbel
b. Cymose head
c. Capitulum
d. Verticillaster

Answer 1

Hint: By looking at the options we can understand the question is about the type of inflorescence.

Complete answer
Explanation: mainly inflorescence are of following types
(I) Racemose
(II) Cymose
(III) Special types

(l). Racemose is classified into following types
- Raceme : it is having an elongated axis which bears pedicellate flowers
- Spike : it is similar to raceme but flowers does not have pedicel or stalks
- Catkin : it is nothing but spike with unisexual flowers
- Spadix : it is spike with fleshy axis enclosed by one or more bracts
- Corymb : the axis is short where lower flowers have longer pedicel than upper flowers, so all flowers comes to same level
- Umbel : The axis is short with cluster of pedicellate flowers arising from common point or single point
- Head or capitulum : Here the main axis is flattened more or less like convex where the flowers are sessile

(II). Cymose type of inflorescence the main axis is terminated with flower and lateral axis is developed which in turn terminates with flower
Here the flowers are either pedicellate or sessile
Based on the number of lateral axis the Cymose is classified as
Monochasial
Dichasial
Polychasial

(III). Special types include
- Hypanthodium : The main axis is cup shaped receptacle with opening at top and flowers are enclosed in cup
- Cyathium: Here involucre forms a cup where there is a single female flower surrounded by male flowers.
- Verticillaster: The first axis terminates into flower and branches form below it in alternative manner and flowers here are sessile appear as clusters at the node

So from the above explanation the correct option is umbel

Note: Inflorescence consists of so many types so simplifying and making a tabular form with key points helps to identify this type of questions easily without any confusion.