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All Journal Jurnal Pendidikan Indonesia GRADIEN Jurnal Pendidikan Biologi Indonesia Jurnal Florea Pro-Life Jurnal Biodjati Biosfer: Jurnal Pendidikan Biologi Proceeding Biology Education Conference
Rusdi Hasan
Program Studi Pendidikan Biologi Universitas Muhammadiyah Bengkulu, Indonesia Jalan Bali 118 Kota Bengkulu 38119
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health

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Using critical analysis to develop metacognitive ability and critical thinking skills in biology Lukitasari, Marheny; Hasan, Rusdi; Murtafiah, Wasilatul
Jurnal Pendidikan Biologi Indonesia Vol 5, No 1 (2019): MARCH
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (427.271 KB) | DOI: 10.22219/jpbi.v5i1.7262

Abstract

Possessing and developing metacognitive abilities are an essential part of the learning process. This study is a class action research on the use of critical analysis to identify its influence on students’ metacognitive abilities and critical thinking skills as well as to discover the relationship between metacognitive abilities and critical thinking skills. The sample of this study is 76 students from 217 students taking cell biology and non-vascular plants subject during the fall semester. It is a descriptive quantitative study with critical analysis assignments. Critical analysis rubric is used to collect the data of students’ critical analysis and the essay test to measure students’ critical thinking and metacognitive ability. The data of metacognitive ability and critical thinking were analyzed using regression test. The result showed there was a positive influence of the use of critical analysis to the student metacognitive abilities and critical thinking skills. The results of a simple correlation analysis of metacognitive abilities and critical thinking skills show the means value (r) of 0.904, which means that there is a strong positive relationship between the two components. The higher the student’ metacognitive skills, the higher their critical thinking skill will be.
The activeness, critical, and creative thinking skills of students in the Lesson Study-based inquiry and cooperative learning Hasan, Rusdi; Lukitasari, Marheny; Utami, Sri; Anizar, Anizar
Jurnal Pendidikan Biologi Indonesia Vol 5, No 1 (2019): MARCH
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (449.325 KB) | DOI: 10.22219/jpbi.v5i1.7328

Abstract

The implementation of innovative learning and lesson study (LS) are potential to improve student thinking skills and activeness differently and mostly implemented separately. This study aimed to explore and compare the student critical and creative thinking skills as well as student activeness in the inquiry and cooperative models combined with LS-based learning practice. This was a descriptive quantitative study that was conducted at Islamic Senior High School 1 of Bengkulu.  The sample was two classes consisted of 33 and 32 students each that conducted LS-inquiry and LS-cooperative learning. The essay test delivered to measure critical and creative thinking skills and observation sheet to measure student activeness. The data were analyzed by t-test to compare critical and creative thinking skills as well as the student activeness between the LS-inquiry and LS-cooperative classes. The result showed that LS-inquiry learning improved the student critical and creative thinking skills that significantly higher than LS-cooperative learning. The student activeness improved gradually as LS cycles during learning processes in either inquiry or cooperative learning, but no significant difference between these two learning models. It showed that inquiry learning plays a dominant influence in critical and creative thinking skills improvement, whereas LS in student activeness improvement otherwise.
Populasi Ikan Gelodok (Periophthalmus modestus) Di Kawasan Hutan Mangrove Kualo Lingkar Barat Bengkulu Murniati, Neni; Hasan, Rusdi
GRADIEN : Jurnal Ilmiah MIPA Vol 12, No 1 (2016): (Januari 2016)
Publisher : Universitas Bengkulu

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Abstract

Penelitian ini bertujuan untuk mengetahui populasi ikan gelodok (Periopthalmus modestus) di kawasan hutan mangrove Kualo Lingkar Barat Bengkulu. Penelitian ini dilakukan dengan metode survey langsung ke lokasi penelitian. Populasi ikan gelodok dihitung berdasarkan metode dari Hayne (Analisis Regresi: Y = a + bX), kemudian dilakukan pengukuran faktor ekologi pada habitat ikan gelodok. Hasil penelitian menunjukkan bahwa jumlah ikan gelodok (Periophthalmus modestus) yang ada di kawasan hutan mangrove Kualo Lingkar Barat Bengkulu berkisar 372 s/d 396 ekor. Untuk faktor ekologi ikan gelodok di hutan mangrove Kualo Lingkar Barat Bengkulu diketahui bahwa suhu berkisar 25oC - 32oC, salinitas berkisar 0-9 ppt, pH air berkisar 7,5-8,3, kedalaman air berkisar 84,8-178 cm, dan lumpur 17,2-20,8 cm serta kecerahan air berkisar 35-110 cm dan jenis vegetasi yang ada adalah  Bruguiera gymnorrhiza.
Microteaching Lesson Study of Biology Prospective Teacher to Develop Lesson Plan Design and Teaching Ability Lukitasari, Marheny; Hasan, Rusdi; Murtafiah, Wasilatul
Jurnal Pendidikan Indonesia Vol 10, No 3 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (307.09 KB) | DOI: 10.23887/jpi-undiksha.v10i3.22701

Abstract

This research aimed to develop the learning tools of the biological subject in high school and the teaching biology ability of the teacher candidates through microteaching-lesson study (MLS). The combination of MLS activities was unfolded in preparing the real learning conditions for prospective teachers who will conduct the field practice in the actual classroom. Data were collected through the observation sheets, interviews, and microteaching scores that represented the students' teaching ability. The data were analyzed descriptively. The results showed that each student capable of designing three learning plans with good and excellent categories. The teaching ability and classroom management of students increase by the three activities that conducted, as can be seen from the mean of first (55,77), the second (71,88), and the third (84,38) practice values. However, the students experienced difficulties in the stages of preparation and implementation concerning the more time needed as well as the more cycle activities. Therefore, the students argued that by the only three cycles of activities they experienced, then the LS would be constrained to introduce in the field practice program at school. The more cycles of MLS and guidance from the lecturer is still needed to make prospective teacher ready to implement LS in their field practice at school.
MORFOMETRI DAN ALOMETRI KEPITING BIOLA UCA PERPLEXA YANG TERDAPAT PADA VEGETASI MANGROVE DI PULAU BAAI, BENGKULU Hasan, Rusdi; Kasmiruddin, Kasmiruddin; Wardani, Ade Kurnia
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 11, No 1 (2014): Prosiding Seminar Nasional XI Biologi
Publisher : Universitas Sebelas Maret

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Abstract

The study of mophology, morphometry and alometry of Uca perplexa, one of fiddler crabs that dominated at mangrove vegetation in Pulau Baii of Bengkulu have been conducted. We measured morphometric characters including body weight and sizes of carapace, abdomen, chelae, frontal, eyebrow and eye stalk. The result showed Uca perplexa live at sandy mud substrate and made burrow around mangrove roots. Uca perplexa have back carapace with some horizontal white strips. Carapace was acute and straight at anteriolateral part and rounded at dorsolateral. Their foot color usually brown although some of them were grey, were also found. The male (2.4±0.96 g) has higher of body weight than female (0.77±0.23 g) caused by dimorphism of chelae in male. Carapace width of male and female were 14.74±4.42 mm and 10.42±3.24 mm, respectively. As for abdomen width of male was 5.16±1.61 mm and of female was 6.58±1.38 mm. The length of major chelae was 44.66±9.22 mm as minor chelae was 10.50±0.49 mm. The frontal length of male was 3.44± 0.44 mm as for female was 2.83±0.69 mm. The eyebrows were narrow with eye stalks length for male and female were 6.50±2.46 and 4.20±0.92, respectively. Alometric analysis showed that Uca perplexa either male or female has growth pattern with negative alometry (b<3). It suggest the increase of body weight in Uca perplexa is slower than the increase of size of its carapace, abdomen and chelae. Keywords : Uca perplexa, fiddler carb, morphometry, alometry, bengkulu
Population and Microhabitat of Uca spp. in Mangrove Conservation Area of Pantai Panjang, Bengkulu Hasan, Rusdi
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 12, No 1 (2015): Prosiding Seminar Nasional XII Biologi
Publisher : Universitas Sebelas Maret

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Abstract

Fiddler crabs (Uca spp.) are distributed widely in tropical and subtropical areas in the world. They live in the sandy and muddy bay habitats of intertidal zone. This study aimed to find species abundance, microhabitat and population density of fiddler crabs in mangrove conservation area of Pantai Panjang, Bengkulu.  The sampling was conducted for three months started from December 2013 to February 2014. Sampling locations were decided purposively on the area consist of four microhabitats, i.e. sandy, muddy, muddy around decay plant roots and around mangrove roots. Samples of Uca were collected from 1x1 m of sixty quadrants.   The results found seven species of fiddler crabs i.e. U. perplexa, U. lactea, U. jocelynae, U. forcipata, U. triangularis, U. rosea, and U. dussumieri. They were distributed at four microhabitats. The microhabitats of U. perplexa, U. lactea, U. jocelynae, U. forcipata, U. triangularis, U. rosea, and U. dussumieri were around mangrove roots and sandy, around mangrove roots, muddy, muddy, muddy around decay plants, muddy and sandy areas, respectively. Among those species, U. perplexa was the most abundant population whereas U. dussumieri was the less one. Popolation density of fiddler crabs were U. perplexa  5.48  ind/m2, U. lactea 4.25 ind/m2, U. jocelynae , 1.47 ind/m2, U. forcipata 0.28 ind/m2,  U.triangularis 0.18 ind/m2,  U. rosea 2.17 ind/m2 and U. dussumieri 0.12 ind/m2.Key words: Mangrove, microhabitat, population, Uca spp.
Aplikasi Asam Humat dan Pupuk Organik Cair Ekstrak Rumput Laut untuk Meningkatkan Pertumbuhan dan Kandungan Flavonoid Brassica juncea L. Setiawati, Tia; Fitria, Sania Septiani; Nurzaman, Mohamad; Hasan, Rusdi; Mutaqin, Asep Zainal; Lestari, Ani
Jurnal Pro-Life Vol. 11 No. 2 (2024): Juli
Publisher : Program Studi Pendidikan Biologi Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/jpvol6Iss2pp102

Abstract

This research was conducted with the aim of obtaining the optimal dose of humic acid (HA) and liquid organic fertilizer (LOF) from seaweed extract that can enhance the growth and total flavonoid content of Brassica juncea L. The method used in this study was experimental with a randomized complete block design with two factors. The first factor was HA, consisting of 4 dose levels: 0, 4, 8, and 12 g/kg, while the second factor was LOF from seaweed extract, consisting of 4 dose levels: 0, 1, 2, and 3 mL/L. Each treatment was replicated four times. Parameters were observed on the 42nd day, including plant height, leaf number, leaf area, dry weight, and total flavonoids. Data were analyzed using Analysis of Variance (ANOVA) and followed by Duncan's Multiple Range Test with a confidence level of 95%. The results showed that the dose of 4 g/kg HA and 2 mL/L LOF was the best dose for enhancing growth and total flavonoid content, producing an average plant height of 19.25 cm, a leaf number of 5.75, a total leaf area of 179.8 cm2, a dry weight of 0.57 grams, and a total flavonoid content of 0.106 mg QE/g sample.
Morphoanatomy and Phytochemical Content of Sente Leaves (Alocasia macrorrhizos (L.)G.Don) under Different Light Intensity in Arboretum Universitas Padjadjaran Rachma, Nadhira Zaachrany; Mutaqin, Asep Zainal; Setiawati, Tia; Nurzaman, Mohamad; Hasan, Rusdi
Florea : Jurnal Biologi dan Pembelajarannya Vol. 11 No. 1 (2024)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/florea.v11i1.21146

Abstract

Light intensity in plants influences their growth potential as well as their morphological, anatomical, and physiological structures. This study aimed to observe the leaf area, leaf thickness, leaf type, stomatal type, stomatal density, chlorophyll content, and phytochemical content of Sente leaves (Alocasia macrorrhizos) in two locations with different light intensities. This exploratory research used a survey method to determine the research location, and environmental parameter measurements was used as supporting data. Morphological and anatomical parameters and chlorophyll content were assessed using a quantitative approach, while phytochemical content was determined qualitatively and analyzed descriptively. The results showed differences in the morphology, anatomy, chlorophyll content, and phytochemicals of Sente leaves in varying light intensities. Morphologically, the leaves of Sente plants in shaded locations had larger surface areas, were thinner, and appeared greener compared to those in unshaded locations. The stomatal density of leaves in unshaded areas was higher (76.43 cells/mm ²) compared to shaded areas (56.05 cells/mm ²). The chlorophyll content in shaded locations was higher (82.03 CCl) than in unshaded locations (41.7 CCl). Phytochemical tests for flavonoids and saponins showed higher compound levels in leaves from unshaded locations, while tannin tests revealed higher levels in shaded locations compared to unshaded ones. Meanwhile, tests for alkaloids and quinones yielded negative results.  
Characteristics of Stomata and Leaf Thickness in Several Liliales Plants Hasan, Rusdi; Nurzaman, Mohamad; Setiawati, Tia; Mutaqin, Asep Zainal
Florea : Jurnal Biologi dan Pembelajarannya Vol. 11 No. 2 (2024)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/florea.v11i2.21297

Abstract

This study examines the stomatal characteristics and leaf thickness of six species within the Liliales: Gloriosa superba, Sansevieria trifasciata, Aloe vera, Cordyline terminalis, Pleomele angustifolia, and Allium fistulosum. Stomatal density, type, and distribution were measured to understand their relationship with leaf morphology. The results show that Gloriosa superba has a stomatal density of 148.72/mm² and an index of 0.295, with thin leaves. Sansevieria trifasciata, with its thick, fleshy leaves, has a lower stomatal density of 15.39/mm² and an index of 0.031. Aloe vera, another species with thick leaves, has a stomatal density of 38.47/mm² and an index of 0.067. In contrast, Cordyline terminalis and *Pleomele angustifolia, which have thin leaves, exhibit higher stomatal densities of 192.31/mm² and 128.21/mm², respectively. Their stomatal indices are 0.092 for Cordyline terminalis and 0.163 for Pleomele angustifolia. Allium fistulosum also has thin leaves, with a stomatal density of 100/mm² and a high stomatal index of 0.390. The study reveals that species with thicker leaves tend to have lower stomatal densities, a feature that helps reduce water loss in arid environments. These findings contribute to a deeper understanding of plant adaptation mechanisms and have implications for improving water-use efficiency in agriculture and conservation efforts.
The Growth of Oyster Mushroom on Ramie Chip Waste-Derived Media was Accelerated by Rice-washed Water Budiono, Ruly; Washfanisa, Handina Alya; Mutaqin, Asep Zainal; Kusmoro, Joko; Nurzaman, Mohamad; Setiawati, Tia; Hasan, Rusdi
Jurnal Biodjati Vol 9, No 2 (2024): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v9i2.33433

Abstract

Rice-washed water is wastewater resulted from the rice cleaning process that is rich in nutrients. The use of ramie chip waste can be considered a potential substrate due to its lignocellulosic nature, similar to other wastes studied. This study aimed to examine the effect of rice-washed water on the mycelium and pinhead growth of white oyster mushrooms grown in the ramie chip waste as the growing medium. The experiment was conducted for three months using a completely randomized design with four rice-washed water treatments and six replications. The rice-washed water concentration treatments were 0% (K0), 25% (K1), 50% (K2), and 100% (K3), which were added to the ramie chip waste as the growing medium for white oyster mushroom. The time of mycelium propagation velocity, the time the first pinhead appearance, the number of mushroom bodies, and the largest cap diameter were observed. The results showed that ramie chip waste-derived media was suitable to cultivate white oyster mushrooms. Adding 100% rice-washed water to the media significantly affected the speed of mycelium propagation (16.51 days) compared to control (30 days) and the appearance of the first pinhead (31.5 days) compared to control (38.5 days) as well as the number of fruiting bodies of mushroom (8.8) compared to control (6.2). However, the rice-washed water application did not significantly affect the diameter of the largest mushroom cap.
Co-Authors Anak Agung Gede Sugianthara Ani Lestari Anizar Anizar Arofah, Annisa Nur Asep Zainal Mutaqin Cahya, Malinda Dwi Fitria, Sania Septiani Handayani, Seviana Esti Joko Kusmoro Kasmiruddin, Kasmiruddin Marheny Lukitasari Mohamad Nurzaman Neni Murniati Rachma, Nadhira Zaachrany Ruly Budiono, Ruly Sri Utami Tia Setiawati Wardani, Ade Kurnia Washfanisa, Handina Alya Wasilatul Murtafiah Yennita