Question

A characteristic of angiosperm is
a) Flowers
b) Roots
c) Seed
d) All of these

Answer 1

Hint: Angiosperms are Phanerogams. Phanerogams are those plants that produce seeds. Angiosperms are those phanerogams that have their seeds enclosed within the fruit. They are considered as the most advanced group of plants.

Complete Answer:
All the eukaryotic, multicellular organisms with the autotrophic mode of nutrition belong to Kingdom Plantae. Plantae is divided into cryptogams and Phanerogams. Cryptogams are further classified as Algae, Bryophytes, and Pteridophytes. Phanerogams include Gymnosperms and Angiosperms. cryptogams are spore-producing plants that do not produce seeds whereas Phanerogams produce seed.

Angiosperms are Phanerogams. Angiosperms are flowering plants that have seeds enclosed inside the fruit. It is derived from two words; angios- enclosed, Sperma- seed hence they have seeds enclosed in fruits.

Angiosperms are the group of the highly evolved and most advanced type of flowering plants. They are found in variable habitats. Angiosperms can vary in size, for example- Wolffia is the smallest angiosperm having a size of 1mm and Eucalyptus which can grow over 100 meters long. The plant body has well-differentiated stems, leaves, and roots. They have a well- developed vascular system. Angiosperms are heterosporous as they have microspores (pollens) and megaspores (eggs). Microspores and megaspores are formed in microsporangia and megasporangia (or ovules) respectively. Pollination is indirect and can be self or cross. These plants show double fertilization. The flower is the reproductive organ. There are different changes that take place post-fertilization. Ovary changes to fruits and ovule changes to seed. Other parts of the flower fall off. The seeds so formed may be monocotyledonous or dicotyledonous. So, we can say that Flowers, roots, and seeds are characteristics of the flowering plant.

Thus the correct answer is option D- All of these.

Note: Angiosperm is derived of two words; angios- enclosed, sperma- seed hence they have seeds enclosed in fruits. They are the most recently originated plant group in the geological time scale.