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DIVERSITY AND MORPHOLOGY OF ORNAMENTAL PLANTS IN KARO REGENCY: BOTANICAL INVENTORY AND SUSTAINABLE USE POTENTIAL Wina Dyah Puspita Sari; Aswarina Nasution; Cicik Suriani; Nadia Mubarokah; Anita Kairani
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 12 No. 2 (2026): Biolink February
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v12i2.16446

Abstract

This study aims to document the diversity and morphological traits of ornamental plants in Karo Regency and assess their potential for sustainable use. Employing a qualitative descriptive approach, field surveys at Brastagi were conducted at 8 days, morphological observations, and semi-structured interviews with local communities and experts were held with 10 keys conducted. Sixteen ornamental species from 12 families were identified, including terrestrial and epiphytic orchids, ferns, and flowering plants such as Begonia laruei and Ixora javanica. These species are found at elevations of 920–1,000 meters within montane tropical rainforest habitats characterized by high humidity and limited light. Morphological adaptations indicate resilience to these specific conditions. Production data indicate the important economic role of ornamental plant cultivation in Karo Regency. Chrysanthemum, rose, and tuberose are the most widely cultivated species. This reflects their socioeconomic relevance. The integration of botanical and ethnobotanical data provides essential baseline information supporting biodiversity conservation and sustainable horticulture development. This research contributes valuable insights supporting conservation planning and community-based sustainable development in North Sumatra.
Pengembangan Instrumen Tes Berpikir Kritis Berbasis Sintesis Watson-Glaser dan Ennis Tariza Fairuz; Nadia Mubarokah; Sri Masnita Pardosi; Shofia Lubis
SAP (Susunan Artikel Pendidikan) Vol. 10 No. 3 (2026): SAP
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/sap.v10i3.1464

Abstract

The limitations of science assessment instruments that are able to measure critical thinking skills comprehensively, particularly in integrating cognitive dimensions and operational indicators into one complete construct, is still a problem in learning evaluation practices. This study aimed to develop a critical thinking test instrument based on the synthesis of the Watson–Glaser and Ennis frameworks in the context of science education. The research employed a Research and Development approach using the ADDIE model, consisting of analysis, design, development, implementation, and evaluation stages. The instrument was developed by synthesizing Watson–Glaser critical thinking components and Ennis’ operational indicators, which were then translated into multiple-choice reasoning-based items on wave and optics topics. Expert validation was conducted to evaluate content, construct, and language aspects. The instrument was tested on 38 undergraduate students of science education in Universitas Negeri Medan. The results indicated that the instrument was valid based on expert judgment and demonstrated adequate construct validity. Reliability analysis using Cronbach’s Alpha yielded a coefficient of 0.876, indicating high internal consistency. These findings suggest that the developed instrument reliably measures critical thinking skills in accordance with the synthesized Watson–Glaser and Ennis framework. The instrument can serve as an alternative assessment tool for science learning that emphasizes critical reasoning.