(a) Write the desirsble characters a farmer looks for in his sugarcane crop.
(b) How did plant breeding techniques help north Indian farmers to develop cane with desired characters ?

Plant breeding technique has helped sugar industry in North india Explain how.

Plant breeding technique has helped sugar industry in North india Explain how.

Observe the following A and B. a. List out the desirable characters in the plants given in figures A and B. b. Suggest a possible technique to integrate these characters in a new variety. c. Explain the process involved in the technique you suggested.

(a) Why did Mendel choose garden pea for his experiments? Write two reasons. (b) List two contrasting visible characters of garden pea Mendel used for his experiment. (c) Explain in brief how Mendel interpreted his results to show that the traits may be dominant or recessive.

A plant breeder developed a hybrid sugarcane by grafting two differents varieties with desirable characters. The resultant hybrid showed as excellent growth and productivity with increased sucrose contant compared to its parental forms. (i) What does this phenomenon refers to? (ii) How its condition can be maintained through further generation?

Form a group with 4 to 5 of your classmates, visit nearby field, discuss with farmers about diseases affected by, and how to control them. If you do not know the name of the disease, write its local name or its characters.

Read the following paragraph and answer the questions based on it. Rhizobium produce nitrogenous compounds from atmospheric nitrogen. However, for this process of nitrogen fixation, they need leguminous plants like beans, sweet pea, soyabean, etc. as ‘host’. Rhizobium living in root nodules supply nitrates, nitrites and amino acids to that plant and in exchange get energy in the form of carbohydrates from it. Such a mutually beneficial relationship is called symbiosis. Beans and pulses are rich in proteins due to the nitrogenous compounds made available by Rhizobium. After harvesting a leguminous crop, the left-over roots and other plant parts are deliberately dumped in farm soil to maintain its bacterial population. The use of Rhizobium has helped to reduce the use of chemical fertilizers and thereby their adverse effects. It has also helped to reduce expenses on fertilizers and thus works to the benefit of farmers. How does Rhizobium help to save money of the farmers?

Read the following paragraph and answer the questions based on it. Rhizobium produce nitrogenous compounds from atmospheric nitrogen. However, for this process of nitrogen fixation, they need leguminous plants like beans, sweet pea, soyabean, etc. as ‘host’. Rhizobium living in root nodules supply nitrates, nitrites and amino acids to that plant and in exchange get energy in the form of carbohydrates from it. Such a mutually beneficial relationship is called symbiosis. Beans and pulses are rich in proteins due to the nitrogenous compounds made available by Rhizobium. After harvesting a leguminous crop, the left-over roots and other plant parts are deliberately dumped in farm soil to maintain its bacterial population. The use of Rhizobium has helped to reduce the use of chemical fertilizers and thereby their adverse effects. It has also helped to reduce expenses on fertilizers and thus works to the benefit of farmers. How do the soil conditions improve by Rhizobium?