All questions of Maintaining Life for Class 9 Exam

Root hairs are specialized structures that extend from the surface of plant roots. Their main function is to significantly increase the surface area available for absorbing water and essential mineral ions from the soil. This adaptation is crucial for the plant's ability to gather the nutrients and moisture necessary for its growth and survival. Interestingly, root hairs are so small that they are often only visible under a microscope, yet they play a vital role in the plant's overall health.

Pregnant women should consult a doctor before taking any drugs to ensure the safety of the fetus. This includes both prescription and over-the-counter medications, as many substances can adversely affect fetal development. An interesting fact is that some medications, even common ones like ibuprofen, may not be safe during pregnancy, highlighting the importance of professional medical advice in managing health during this critical period.