< b="" />Introduction:< />
The Indus Valley Civilization, also known as the Harappan Civilization, was one of the earliest urban civilizations in the world. It flourished in the Indus River Valley in present-day Pakistan and western India from about 3300 BCE to 1300 BCE. The people of this civilization were highly skilled in agriculture and cultivated a variety of crops.

< b="" />Explanation:< />
Among the crops cultivated by the Indus Valley Civilization, pulses are not known to have grown. The other options mentioned - cotton, wheat, and barley - were indeed grown during this time period.

< b="" />Cotton:< />
Cotton was one of the major crops cultivated by the Harappans. They grew cotton for its fibers, which were then used to make textiles. The discovery of cotton seeds, cotton fibers, and evidence of cotton cultivation suggests that the Indus Valley people were skilled in growing and processing cotton.

< b="" />Wheat:< />
Wheat was another important crop grown during the Indus Valley Civilization. Wheat grains have been found at various Harappan sites, suggesting that it was a staple food for the people. The cultivation of wheat required a well-planned irrigation system, which the Harappans had mastered.

< b="" />Barley:< />
Barley was also a commonly cultivated crop during the Indus Valley Civilization. It was used as a food grain as well as for making beer. Barley grains and beer-making equipment have been found at Harappan sites, indicating the importance of this crop in their daily lives.

< b="" />Pulses:< />
Pulses, such as lentils, chickpeas, and beans, are not known to have been grown during the Indus Valley Civilization. The absence of evidence for pulse cultivation in Harappan sites suggests that these crops were not common or widely cultivated by the Harappans.

< b="" />Conclusion:< />
In conclusion, while cotton, wheat, and barley were staple crops cultivated by the Indus Valley Civilization, there is no evidence to suggest that they grew pulses. The reasons for the absence of pulse cultivation in the Indus Valley Civilization are not entirely clear and may be attributed to various factors such as climate, soil conditions, or cultural preferences.