Questions

Yes, plant cells have Mitochondria.

While plant cells have chloroplasts to photosynthesize, they also require ATP for cellular functions, and do use oxygen to break down some of the sugar they produce in order to generate that ATP. They need mitochondria for this.

In particular, at night when there is no light, plants undergo cellular respiration since there is no sunlight to photosynthesize.

They do, however, produce far more sugar and oxygen through photosynthesis than they use up in respiration.

The ryots came to see the moneylender as devious and deceitful. They complained of moneylenders manipulating laws and forging accounts. In 1859 the British passed a Limitation Law that stated that the loan bonds signed between moneylenders and ryots would have validity for only three years. This law was meant to check the accumulation of interest over time. The moneylender, however, turned the law around, forcing the ryot to sign a new bond every three years.

South Africa hosted the 10th edition of BRICS Summit 2018 in Johannesburg on July 25. 

Chloroplasts are organelles in plant and bacteria cells that contain the chlorophyll is responsible for photosynthesis.

Process by which sediment is removed from its source is called Erosion.

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A production–possibility frontier (PPF) or production possibility curve (PPC) is the possible tradeoff of producing combinations of goods with constant technology and resources per unit time.