PDF chapter test TRY NOW
Answer the following multiple-choice questions:
A group of students performed an experiment by placing onion bulbs on jars containing water. After a few days, roots emerged from the base of the bulbs. In one jar, the roots were kept intact and continued to increase in length. In another jar, the root tips were cut, and no further growth was observed. When the students examined the root tips under a microscope, they found many actively dividing cells in that region. The experiment proved that the apical meristem present at the root tip is responsible for root growth in plants.
Situations:
1. What developed from the base of the onion bulb after a few days?
2. Why did the onion roots grow longer in the uncut setup?
3. What was observed at the root tip under the microscope?
4. Which tissue is made up of actively dividing cells?
5. What does the onion root experiment prove?
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