ABSTRACT
Background In the field of medical education, traditional methods of teaching and learning have been used for a long time. Various new methods of learning, like activity-based learning (ABL), case-based discussion (CBD), and problem-based learning (PBL), are laying the foundation for this modern era of teaching. This study was a comparative study conducted to determine the effectiveness of activity-based learning and traditional lectures by teaching two topics to MBBS first-year professional students. Aims The study compares the effectiveness of didactic lectures and activity-based learning for MBBS first-year professional students in the subject of anatomy. Methodology The study was conducted in the Department of Anatomy Hind Institute of Medical Sciences, Barabanki, and included 100 MBBS (2022-2023) first-year students randomly assigned to Group A (n=50, 16 females and 34 males) and Group B (n=50, 23 females and 27 males) through chit methods. The participants were exposed to two different topics of anatomy in the form of activity-based learning as well as didactic lectures. Assessments were done immediately after the exposure in the form of a post-test, and results were analyzed for both groups. Result The results of the study showed that both activity-based learning and didactic lectures were effective in teaching the two topics, but the didactic lecture group had higher retention rates than the activity-based learning group. The mean score of post-tests of students who attended a didactic lecture on the brachial plexus (6.166± 2.11) was slightly higher than that obtained by students who attended activity-based learning (5.625 ± 2.12), but the p-value obtained was not significant (0.249). Whereas the mean of the scores of the post-test obtained by students who attended a didactic lecture on mammary gland was (8.45± 1.20), slightly lower than the mean of the scores of the post-test of students who attended activity-based learning on mammary gland (8.60± 1.16), but the p-value obtained was not significant (0.520). Conclusion This study provides evidence that didactic lectures play an important role in teaching anatomy to MBBS first-year students and cannot be replaced by activity-based learning alone. Lectures followed by activity-based learning can prove to be a newer and more effective teaching-learning method with better outcomes in the form of retention and conceptual understanding of the topics in anatomy.
ABSTRACT
Heavy metal (HM) contamination is a serious global environmental crisis. Over the past decade, industrial effluents, modern agricultural practices, and other anthropogenic activities have significantly depleted the soil environment. In plants, metal toxicity leads to compromised growth, development, productivity, and yield. Also, HMs negatively affect human health due to food chain contamination. Thus, it is imperative to reduce metal accumulation and toxicity. In nature, certain plant species exhibit an inherent capacity of amassing large amounts of HMs with remarkable tolerance. These plants with unique characteristics can be employed for the remediation of contaminated soil and water. Among different plant species, Sorghum bicolor has the potential of accumulating huge amounts of HMs, thus could be regarded as a hyperaccumulator. This means that it is a metal tolerant, high biomass producing energy crop, and thus can be utilized for phytoremediation. However, high concentrations of HMs hamper plant height, root hair density, shoot biomass, number of leaves, chlorophyll, carotenoid, and carbohydrate content. Thus, understanding the response of Sorghum towards different HMs holds considerable importance. Considering this, we have uncovered the basic information about the metal uptake, translocation, and accumulation in Sorghum. Plants respond to different HMs via sensing, signaling, and modulations in physico-chemical processes. Therefore, in this review, a glimpse of HM toxicity and the response of Sorghum at the morphological, physiological, biochemical, and molecular levels has been provided. The review highlights the future research needs and emphasizes the extensive molecular dissection of Sorghum to explore its genetic adaptability towards different abiotic stresses that can be exploited to develop resilient crop varieties.
