Product of photosynthesis is transported from the leaves to various parts of the plants and stored in some cells before being utilised. What are the cells/tissues store them?

Information for synthesis of proteins is stored in which part of cell

What are the cells that make the leaves curl in plants during water stress?

What is meant by stoma?Name the group of plants,which contains fewer stomata on the upper surface of leaves .How does the absorption and loss of poassium ions in the guard cells bring about the opening and closuure of stmata?Explain.

What is the end product of glycolysis in aerobes and where does this process occur ?List the conditions under which the fermentation occurs in plant cell?

Long Answer Questions Five mark Each QUESTIONS FROM CBSE BOARD EXAMINATIONS : A flower of tomato plant following the process of sexual reproduction produces 240 viable seeds. Answer the following questions giving reasons: (a) What is the minimum number of pollen grains that must have been involved in the pollination of its pistil? (b) What would have been the minimum number of ovules present in the ovary? (c) How many megaspore mother cells were involved? (d) What is the minimum number of microspore mother cells involved in the above case? (e) How many male gametes were involved in this case?

Zeolites are alumina-silicates that are micro-porous in nature. Zeolites have a honeycombIike structure, which makes them shape-selective catalysts. They have an extended 3D-network of silicates in which some silicon atoms are replaced by aluminium atoms, giving them an Al-O-Si framework. The reactions taking place in zeolites are very sensitive to the pores and cavity size of the zeolites. Zeolites are commonly used in the petrochemical industry. A catalytic reaction which depends upon the pore structure of the catalyst and on the size of the reactant and the product molecules is called shape-selective catalysis. For example, catalysis by zeolites is a shapeselective catalysis. The pore size present in the zeolites ranges from 260-740 pm. Thus, molecules having a pore size more than this cannot enter the zeolite and undergo the reaction. What is the pore size of Zeolites ?