1
Question
Haematoxylon campechianum, the heart wood of which yields dye haematoxylin belongs to
Open in App
Solution
The correct option is B Caesalpiniaceae
The extract is a purplish-red natural dye obtained from the Logwood tree. The logwood tree is a spiny tropical American tree (Haematoxylon campechianum) in the pea family, subfamily Caesalpiniaceae and it is the dark heartwood from which the extract is obtained.
Logwood (Haematoxylum campechianum) is a species of flowering tree in the legume family, Fabaceae, that is native to southern Mexico and northern Central America. It has been and to a lesser extent remains of great economic importance. The trees scientific name means bloodwood. Logwood was used for a long time as a natural source of dye and still remains an importance source of haematoxylin, which is used in histology for staining. The bark and leaves are also used in various medical applications. In its time, logwood was considered a versatile dye, and was widely used on textiles but also for paper. The dyes colour depends on the mordant used as well as the pH. It is reddish in an acidic environments but bluish in alkaline ones.
Thus, Haematoxylon campechianum does not belongs to Papilionaceae, Mimosaceae and Cucurbitaceae.
Therefore, the correct answer is option B.
The extract is a purplish-red natural dye obtained from the Logwood tree. The logwood tree is a spiny tropical American tree (Haematoxylon campechianum) in the pea family, subfamily Caesalpiniaceae and it is the dark heartwood from which the extract is obtained.
Logwood (Haematoxylum campechianum) is a species of flowering tree in the legume family, Fabaceae, that is native to southern Mexico and northern Central America. It has been and to a lesser extent remains of great economic importance. The trees scientific name means bloodwood. Logwood was used for a long time as a natural source of dye and still remains an importance source of haematoxylin, which is used in histology for staining. The bark and leaves are also used in various medical applications. In its time, logwood was considered a versatile dye, and was widely used on textiles but also for paper. The dyes colour depends on the mordant used as well as the pH. It is reddish in an acidic environments but bluish in alkaline ones.
Thus, Haematoxylon campechianum does not belongs to Papilionaceae, Mimosaceae and Cucurbitaceae.
Therefore, the correct answer is option B.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
