Question

Green manure plants used by farmers mainly belong to
1. compositae
2. leguminosae
3. Solanaceae
4. poaceae

Answer 1

Correct Answer - Option 2 : leguminosae

Concept:

• Angiosperms are divided into various families, Leguminosae is one of them.

Systematic position:

Class - Dictoledonae

Sub class - Polypetalae

Series - Calyciforae

Order - Rosales

Family - Leguminosae

Explanation:

• The plants which are capable of growing at a faster rate in the fields are the green manure plants.
• These plants mainly belong to the family - Leguminosae, these are called manure plants because they have symbiotic nitrogen-fixing bacteria attached to their root nodules
• These plants enrich the soil with nitrogen
• Leguminosae family is economically important because it includes pulses and some medicinal plants which are used as food and healing material.
• Members of this family include Pulses like Pea, Gram (Chana), French bean (Rajma), Green gram (Moong).
• Fodder: Dhaincha (Sesbania), Medicinal plants like Mulaithi.
• Other important characters of this family are:

1. ​Roots: Roots are branched and a tap root system is present. In roots N2 fixing bacteria Rhizobium is present.
2. Stem: Erect or climber
3. Leaves: Stipulate, simple, or compound-unipinnate.
4. Inflorescence: Typical raceme (Racemose)

 

• Poaceae or Gramineae family includes Cereals.
• Compositae is the largest family of angiosperms. Compositae is the sunflower family.
• Solanaceae is also called a potato family. In the Solanaceae family, most plants are herbs, some of them are shrubs, rarely trees.