Humic acid is soluble in______________________?
Humic acid is soluble in______________________?
A. Acid
B. Alkali
C. Both a & b
D. Distilled water
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World biodiversity day is celebrated on:_________?
World biodiversity day is celebrated on:_________?A. Mar-21
B. March-2
C. Apr-22
D. May-22International Day for Biological Diversity – 22 May The United Nations has proclaimed May 22 The International Day for Biological Diversity (IDB) to increase understanding and awareness of biodiversity issues.
Theory of mutation was given by___________________?
Theory of mutation was given by___________________?A. Mendel
B. De Vries
C. Tschermak
D. WatsonWhich method of irrigation is possible under the economical conditions of Pakistan __________________?
Which method of irrigation is possible under the economical conditions of Pakistan __________________?A. Canal system
B. Modified basin system
C. Drip irrigation
D. All the aboveWhich of the following techniques is/are used for the soil fertility evaluation?
Which of the following techniques is/are used for the soil fertility evaluation?A. Soil testing
B. Plant tissue testing
C. Aspergillus niger test
D. All of theseGulkand is made from the most common beautiful flower of_______________?
Gulkand is made from the most common beautiful flower of_______________?A. Jasmine
B. Chrysanthemum
C. Rose
D. PetuniaCotton fiber are made up of___________________?
Cotton fiber are made up of___________________?A. Cellulose
B. Starch
C. Fates
D. Protein