Nitrogen is an essential nutrient for plants growth. But farmers who cultivate pulses as crops like green gram, bengal gram, black gram, etc., do not apply nitrogenous fertilisers during cultivation. Why?

Pooja is worried about her new shoes which she wore on special occassions that they were spoiled by fungus during rainy seasion. Is she right to worry, if yes, then tell why does fungi suddenly appears during the rainy season?

2. (a) Draw a diagram of a pitcher plant to show the following parts:
(i) Pitcher
(ii) Lid
(b) What is the mode of nutrition of this plant?
(c) Is it an autotroph or partial heterotroph?

Vivek went to visit his grandfather in village where he saw that his grandfather's field of wheat is infected with fungus but no one is aware of this. Vivek told him that he should use an antifungal agent in his fields to stop this infection?
(a) What is fungus?
(b) Can fungus only cause disease or can it be helpful also?
(c) What values are shown by Vivek?

Describe the process by which plants prepare their food using different raw materials.

Harish went to visit his grandfather in village where he saw that his grandfather's field of wheat are infected with fungus but no one is aware of this. Harish rushed to his grandfather's side and told him that the field have been infected with fungi. He should use an antifungal agent in his fields to stop this infection.
(a) What is fungus?
(b) Can fungus only cause diseases or can it be helpful also?
(c) What values are shown by Harish?

Wild animals like tiger, wolf, lion and leopard do not eat plants. Does this mean that they can survive without plants? Can you provide a suitable explanation?

(a) Draw a schematic diagram showing photosynthesis.
(b) What are the products of photosynthesis?
(c) Name the gases utilized and liberated in photosynthesis.
(d) Can all plants do photosynthesis?