Question

Which of the following is not a source of carbohydrate
(a) Wheat
(b) Gram
(c) Rice
(d) Sorghum

Answer 1

Plants that belong to the family Fabaceae have nodular roots that contain symbiotic bacteria that help in the fixation of nitrogen that helps in amino acid synthesis. so, they are rich sources of proteins.

Complete answer:
The large economically important family of flowering plants that includes trees, shrubs belongs to the family Fabaceae which are also called the Leguminosae family. This family consists of beans, peas, legumes so this is also called the bean, pea, or legume family. Grams such as green gram, red gram, Bengal gram, etc belong to the family Leguminosae. Members of this family are rich sources of proteins and fibers because these plants have symbiotic bacteria on the nodules of the roots that help in nitrogen fixation which is used in protein synthesis.

Additional Information: - Members of Fabaceae are herbaceous perennial plants that contain giant trees as koompassia excelsa to small herbs
- The majority of the plants in this family have nodular roots which is one of the modifications of the root in the plants that grow in a nitrogen-deficient environment.
- These nodular roots contain bacteria that are in symbiotic association with the plant that helps in the conversion of atmospheric nitrogen into nitrates which helps in protein synthesis. So, when compared to non-legume plants these plants have a rich protein source

So, the correct answer is 'Gram'

Note: -After fertilization, the ovary in legume plants develops into a fruit called legume is commonly known as a pod.
-Rice, maize, wheat, etc are rich sources of carbohydrates.
-Besides sources of food, legume plants are used to extract natural gums, dye preparation, used as ornamental plants.