Question

Branchless angiosperm trees are called as
A) Excurrent
B) Caudex
C) Shrub
D) Deliquescent

Answer 1

As we know angiosperms are considered to be vascular plants which have stems, roots, and leaves. The seeds of the angiosperm are present in a flower. These make up the majority of the plants on earth. The seeds develop inside the plant organs and form the fruit. Hence, they are also called flowering plants.

Complete answer:
Angiosperms are also known as flowering plants because flowers are characteristic of part of their reproductive structure. These plants evolved between 250-200 million years ago.

Now let us look into the given options:
A) An excurrent stem is a stem within which the main stem can grow indefinitely. The side branch grows in an acropetal manner in which the old flowers are arranged in the lower side and young flowers are arranged at the upper side.
B) The persistent and often woody base of an herbaceous perennial plant is called caudex. If the stem is unbranched, erect, cylindrical, stout, and marked with scars and remnants of fallen leaves as in palms, it is known as caudex.
C) A shrub is a small to medium-sized perennial woody plant which comprises persistent woody stems above the ground. Shrubs can be deciduous or evergreen. They are different from trees by their multiple stems and also shorter height.
D) Deliquescent means branching so that the stem is lost in branches, as in most of the deciduous trees.

Therefore, the correct answer is option ‘B’ which is ‘Caudex’.

Note: Angiosperms are the most advanced and beneficial group of plants which can grow in various habitats like trees, herbs, shrubs, and bushes. The crown of a plant means a plant's parts which are present above the ground, such as the stems, leaves, and reproductive structures. The major types for trees are the excurrent branching habit which results in conoid shapes and the decurrent or deliquescent branching habit, resulting in round shapes.