Symbiotic: Journal of Biological Education and Science

Callus growth of red starfruit (Baccaurea angulata) leaves with the addition 2,4-D (dichlorophenoxy acetic acid) and kinetin

Zulfa Zakiah — 2024-04-27

One of the obstacles to propagating red starfruit (Baccaurea angulata) using seeds is that fruit without seeds is often found. Tissue culture is an alternative for propagating red star fruit plants to provide seeds or secondary metabolites through callus culture. The research aims to determine the effect of 2,4-D and kinetin on callus growth of star fruit leaves and to obtain the best concentration to induce callus. This research used a factorial Completely Randomized Design (CRD) with two treatment factors, namely 2,4-D (0; 0.5; 1.0; 1.5; 2.0; 2.5 ppm) and kinetin (0; 0.5; 1.0; 1.5; 2.0; 2.5 ppm). The observation parameters consisted of callus emergence time (days after planting), wet and dry weight of the callus (g), color and texture of the callus. The results showed that the combination of 2,4-D and kinetin had a significant effect to callus emergence time, but didn't on the wet and dry weight of the callus. The fastest callus emergence time was obtained of 2.5 ppm 2,4-D + 0.5 ppm kinetin, 1.5 ppm 2,4-D + 2.5 ppm kinetin namely 6 DAP. The callus color is white, brown, and brown with a friable and compact texture. Another response that emerged was root growth.

The Efforts and Benefits of River Conservation in the Panyabungan Barat Community, North Sumatra, Based on Local Wisdom of Lubuk Larangan

Nanda Eska Anugrah Nasution — 2024-04-27

The conservation of rivers in West Panyabungan District, is of utmost importance due to their significance as a vital water source for daily activities and their significant impact on people's livelihoods. The objective of this study is to examine the endeavours and advantages of ecological preservation utilising the indigenous knowledge of the Lubuk Larangan River by the inhabitants of West Panyabungan, North Sumatra. This study employs a descriptive qualitative methodology. The data utilised consists of primary data collected by field research, specifically through field observations, in-depth interviews, and focus group discussions. Key informants refer to prominent individuals within the community, including traditional elders, village officials in the surrounding area, managers of Lubuk Larangan, and members of the surrounding community. The research employed data analysis approaches: data collecting, data condensation, data presentation, and the derivation and validation of conclusions. The technique used for data validity assessment is the triangulation of sources and techniques. The research findings indicate that environmental preservation in Lubuk Larangan is achieved through the continuation of traditional practices that have been passed down through generations, collaborative efforts to implement and safeguard these practices, and the implementation of local wisdom to protect the village environment.

Pengaruh Model Problem Based Learning Berbasis Sets Terhadap Hots Pada Materi Ekosistem

Aulia Novitasari — 2024-04-27

The Higher Order Thinking Skills (HOTS) are crucial in helping students solve problems, including connecting new information with existing knowledge, distinguishing ideas or concepts, reasoning, problem-solving, providing explanations, and hypothesizing. Unfortunately, the HOTS abilities of students are not fully met. A study was conducted to investigate the influence of the Problem-Based Learning model based on SETS on HOTS. This research employed a quasi-experimental design. The population consisted of all tenth-grade science students at MAN 1 Lampung Utara. The samples were taken from X MIA 1 and X MIA 3. Data were collected through HOTS essay tests. Based on the research results, a significance level of sig < 0.05 was obtained, indicating that there is an influence of the Problem-Based Learning model based on SETS on the HOTS of tenth-grade students in the ecosystem material at MAN 1 Lampung Utara

Inventarisasi Produk Pangan Fermentasi Lokal Pada Pasar Tradisional di Pontianak Sebagi Sumber Belajar Mikrobiologi

Hasria Alang — 2024-04-27

West Kalimantan, renowned for its abundant biological natural resources, often utilizes them in local food production through fermentation, representing indigenous knowledge passed down through generations. The involvement of microbes in changing a substrate to produce certain products is related to the use of microbes in life, and is one of the themes in the Microbiology course. The aim of this research is to inventory the types of traditional foods typical of West Kalimantan, and their relation to learning Microbiology. Data collection techniques to obtain facts are carried out through observation, interviews and documentation with sources. Data analysis was carried out in a qualitative descriptive manner. The research results showed that the types of traditional food found at the research location were cincalok, wet shrimp paste, salted mustard greens, tempoyak, jasam, and mandai. Based on the research results, it was concluded that there are six traditional food products which constitute local wisdom of ethnic groups in Pontianak. The process of making these food products utilizes bacteria that are naturally present, which means it involves the concept of microbiology, which indicates that it can be used as a learning resource for microbiology courses in the form of modules.

PENGEMBANGAN PERANGKAT PEMBELAJARAN BIOLOGI BERORIENTASI KONSTRUKTIVISME BERNUANSA KARAKTER PADA MATERI SISTEM SIRKULASI

Rescha Rescha — 2024-04-27

Successfull learning can be achieved by learning equipment that involve students actively construct knowledge through meaningful experiences, social interaction, and the real fact. One of the learning equipments to help students build a relationship between the knowledge and its application in real life is learning equipment by constructivist oriented and integrated by nation’s cultural character values. But in reality, in SMAN 1 Sawahlunto, SMAN 8 Padang, and SMA dr. M. Natsir in Solok Regency, learning equipment do not encourage independence in structured thinking and do not integrate character values. The aim of this study was to develop Biology learning equipment by constructivist oriented and character nuanced, consist of the syllabus, lesson plans, handouts, students’ worksheets, and classroom-based assessment on blood circulation system materials for high school grade XI that were valid, practical, and effective. This research using 3-D models. The data collected through validating by five experts and two practitioners then it was tried out in eleventh grade of natural science at SMAN 1 Sawahlunto. The result research results, it was known that Biology learning equipment by constructivist oriented and character nuanced on blood circulation system material for senior high schools grade XI was categorized valid, practical, and effective.

Jenis Tumbuhan Non-Kayu sebagai Produk Kerajinan yang Dikomersialisasikan di Kabupaten Padang Pariaman Provinsi Sumatera Barat

Qurrata A'yuni A'yuni — 2024-04-27

Non-timber forest products (NTFPs) are all types of forest products other than wood which provide multi-purpose benefits for the community, especially local communities who live around the forest. NTFP products are the main focus for alternative economic value of forests, NTFP demand can be used as a reference for management. One potential use of NTFPs is handicraft products that are bought and sold in economic centers, but the various types of NTFPs and their derivative products are still unknown. This research investigates the use of NTFPs for craft products in Padang Pariaman Regency, including the species of plants used, the types of craft products, and market potential. The survey was carried out in five places in Padang Pariaman Regency, selected using purposive sampling. Four types of NTFP plants were found which were used to make 27 types of craft products, namely Pandanus tectorius, Cocos nucifera L., Bambusa spp., and Calamus spp. Most handicraft products are produced from rattan plants, and the highest market potential is obtained by coconut-based craft products with a percentage of 83%. This data can be a reference for LPHN or forest managers around the Padang Pariaman Regency area.

Meta-Analisis : Validitas Media Booklet pada Pembelajaran Biologi (Tahun 2013-2023)

Afifah Pamela — 2024-04-27

This study employs meta-analysis to assess the validity and utility of booklet instructional media in biology education. By analyzing data from various studies using specific keywords, 34 articles published between 2013 and 2023 were selected for evaluation. The analysis focused on content, language, presentation, and graphics. Results indicate an average validity of 90.00%, indicating high validity. Booklet media is deemed highly valid and practical, enhancing learning effectiveness and facilitating student comprehension of biology concepts. In conclusion, booklet media is a valuable resource for both educators and students in biology education.