Question

___________ is the example of a dicot plant.
(A) Mango
(B) Banana
(C) Onion
(D) Wheat

Answer 1

Hint: The seeds of plants which have two cotyledons are usually called dicot plants. Due to occurrence of distinct secondary growth, they appear as woody plants or trees. On the other hand, the seeds of plants which have only one cotyledon are usually called monocot plants. Due to the absence of secondary growth, these plants appear as herbs.

Complete answer:
The dicots are also referred to as dicotyledons due to the presence of two cotyledons in their seeds. All the angiosperms and flowering plants come under the category of dicot plants. Apart from these, the shrubs, trees, and wide-leafed flowering plants are also dicot plants.

Flowering parts such as sepals, stamens, petals, and pistils are also present in dicot plants. The arrangement of the various parts of the flower is based upon a sequence of four or five, or sometimes multiples also in some unique dicots.

The leaves of dicot plants show distinct mesh of veins, whereas the monocot plants show parallel veins in their leaves.
-The vascular bundle is arranged in rings.
-The dicots have tap roots.
-For example mango. It is a dicotyledonous plant whose embryo has two cotyledons. It is a woody tree with reticulate ventilation and tap roots.

i) Banana- It is closely related to the grass family and does not show any secondary growth. The embryos exhibit single cotyledon.
ii) Onion- It belongs to the grass family, has fibrous roots and the leaves exhibit parallel venation.
iii) Wheat- Wheat is a small and soft plant which has fibrous roots and the leaves exhibit parallel venation. The embryos have a single cotyledon.

Thus, the correct answer is option ‘A’.

Note: All the woody trees are dicots (except gymnosperms). The tap root is the special feature of these plants. It comprises long central roots through which rootlets emerge. The fibrous root is found in monocots.