Question

Cyathium is a type of?
A. Flower
B. Fruit
C. Inflorescence
D. Phyllotaxy

Answer 1

Hint: The external features or morphology of all flowering plants contains roots, stems, leaves, flowers and fruits. It is categorized into two systems: Root system (underground part) and Shoot system (portion that is found above the ground).

Complete answer:
Option (A) is incorrect
A flower consists of a reproductive part (stamens and carpels) which is responsible to produce seeds through reproduction. Flowers are modified shoots and leaves that are meant for sexual reproduction and are possessed only by the presence of angiosperms (flowering plants).

Option (B) is incorrect
Fruit is a mature, edible, ripened ovary which bears seeds in flowering plants. Angiosperms are also referred to as flowering plants, from which fruits are produced.

Option (C) is correct
In a flowering plant, the arrangement of a cluster of flowers on the floral axis (peduncle) is referred to as the inflorescence. It is the modified part of the shoot where flowers are formed in seed-bearing plants.
Cyathium – a specific type of inflorescence which looks like a single flower. It contains a cup-shaped involucre formed by bracts which is provided with nectar secreting glands. It has a single female flower surrounded by a number of male flowers. This kind of inflorescence is found in Euphorbia, Poinsettia which belongs to the Euphorbiaceae family.

Option (D) is incorrect
Phyllotaxy is a distinctive class of pattern in which it describes the arrangement of leaves on the stem of a plant or its branches.

Hence, the correct answer is option (C).

Note: Inflorescence consists of two major types of growth pattern - Monopodial (racemose) growth and Sympodial (cymose) growth
In racemose, flowers follow a corporeal pattern of growth. In cymose, flowers are arranged in a basipetal pattern.