Functions In Plant Tissues Research Articles

PENGEMBANGAN MEDIA E-LEARNING BERBASIS TWITTER PADA MATERI BIOLOGI STRUKTUR DAN FUNGSI JARINGAN TUMBUHAN

This study aims to determine whether Twitter-based e-learning media can be developed as a media for teaching biology on the structure and function of plant tissue. This research method is research and development. The research sample was teenage smartphone users in Walahar Village, Cirebon Regency. The results showed that e-learning based on twitter can be used and developed as a medium of teaching materials on the structure and function of plant networks

Pengembangan Lembar Kerja Peserta Didik (LKPD) Berbasis Saintifik pada Materi Struktur dan Fungsi Jaringan Tumbuhan

This study aims to find out the effectiveness of the results of the development of scientific-based Learner Worksheets (LKPD) in improving critical thinking ability and to look at the development of worksheets in terms of feasibility, effectiveness, teacher response and student response. This research uses Research and Development (R & D) method to produce LKPD. The development model used in the research is the ADDIE model which consists of 5 stages namely analysis, design, development, planning and evaluation. The type of data used is skinative and quantitative data. Instruments used in the form of questionnaires and learning outcomes. The results of the study, from the validation results of material experts obtained a score of 84 with a good category and the results of validation media experts obtained a score of 90 with a very good category. The results of the teacher's response obtained a score of 93 with excellent categories and the correlation result of the teacher's response expressed a positive correlation to scientific-based LKPD. For learners to get a correlation value of 0.95, that means there is a strong correlation to scientifically based LKPD. While kappa test obtained by 0.60 with strong category. For effectiveness test if ρ value < 0.05 then H0 rejected, so Ha accepted. In conclusion, scientific-based LKPD effectively improves the critical thinking ability of learners, there are influences both before and after the use of worksheets developed in learning.
 Keywords: Development of LKPD, Scientific, Structure and Function of Plant Tissue

Application Of Problem Based Learning Models To Improve Biologi Learning Outcomes Of VIII Class MTs Negeri 1 Tuban

This study aims to know the description of teacher and student activities in the Biology learning process by applying the Problem Based Learning model in class VIII B of MTs Negeri 1 Tuban on the structure and function of plant tissue and improving student learning outcomes in class VIII B MTs Negeri 1 Tuban. This research was a Classroom Action Research which was conducted in 2 cycles, the stages of each cycle consisting of planning, implementing, observing, and reflecting. The subjects of this study were 32, teacher and all students of class VIII B at MTs Negeri Tuban. The research instrument used was the observation sheet and the test sheet. The observation sheet is used to describe the learning activities carried out by the teacher and student learning activities during the learning process using the Problem Based Learning model while the test is used to measure student learning outcomes after the learning process by applying Problem Based Learning Model. The results of the analysis of teacher activity observation data before CAR = 25 (good), the first cycle obtained an average score = 28 (good), the second cycle increased to 30 (good). The results of the analysis of student activity observation data before CAR = 20 (Enough), the first cycle obtained an average score = 27.5 (good), the second cycle increased to 28.5 (good). The class average before CAR = 72 with 76% classical completeness (not complete), the first cycle the class average value is 78.125 with a percentage of 78.125% classical learning completeness (not complete) in the second cycle increased to a class average of 87, 8 with a percentage of classical learning completeness of 90.63% (complete). It was concluded that the Problem Based Learning model could increase teacher activity and student activity as well as student learning outcomes in class VIII B of MTs Negeri 1 Tuban.

Upaya meningkatkan hasil belajar IPA pada materi struktur dan fungsi jaringan tumbuhan melalui penerapan model pembelajaran mind mapping Siswa kelas VIII MTsN 2 Aceh Besar

he purpose of this study was to improve science learning outcomes on the structure and function of plant networks in class VIII students of MTsN 2 Aceh Besar in the 2017/2018 academic year. The learning model used in this study is the Mind Mapping Learning Model. The subjects of this study were students of class VIII MTsN 2 Aceh Besar with a total of 33 students consisting of 13 male students and 20 fe-male students. This research was conducted in the 2017/2018 Academic Year within a period of 3 months, namely from August 2017 to October 2017 in Odd Semester. The research methodology is Classroom Action Research (CAR) consisting of two cycles and each cycle consisting of two meetings. Each cycle consists of planning, implementing, observing and reflecting. The research procedure con-sisted of pre-research, planning cycle one, implementing action cycle one, observing cycle one, reflect-ing cycle one, planning cycle two, implementing action cycle two, observing cycle two and reflecting cycle two. The data collection technique is to collect test scores that are carried out at the end of each lesson in each cycle using a question instrument (written test). Observation data was carried out by look-ing at the activeness of teachers and students during the learning process. The learning outcome data were analyzed by means of percentage statistics, while the observation data were analyzed by means of a Likert scale. The results showed that there was an increase in the completeness of student learning outcomes from 39.39% in the pre-cycle increased to 60.60% in Cycle I and increased to 87.87% in Cy-cle II. Observation of teacher activity during PBM has increased from a total score of 88 good categories in Cycle I, increasing to a total score of 93 good categories in Cycle II. The application of the Mind Mapping learning model can improve science learning outcomes on the structure and function of plant tissue for class VIII students of MTsN 2 Aceh Besar for the 2017/2018 academic year.

Monopoly Learning Media: Education Media in Structure and Function of Plant Tissue Theory

Material structure and function of plant tissue is one of the most difficult material for students to understand. This is because studying this material in detail requires aids (microscopes) whose observations are not necessarily easily understood by students. In addition, so far the learning media and methods used are less varied. Based on the above statement, we need a learning media that can increase student interest and student understanding in learning the structure and function of plant tissue. So this study aims to develop a monopolistic educational learning media on the structure and function of plant tissue in class VIII of SMPN. This development research refers to the ADDIE model (Analyze, Design, Development, Implement, Evaluation). The monopoly game structure and plant network developed consists of several game equipment including: a monopoly board, a set of ownership rights cards, a set of public and opportunity fund cards, a set of money - dice, and a game guide. As for the pawns in this game are the students themselves. Based on the material expert validation test, it was found that the percentage of material suitability in the monopoly of the structure and function of plant tissue was 70.83% or quite decent. Meanwhile, for the media expert validation test the percentage of eligibility was 63.33% or quite decent. Based on the validation test obtained an average of 67.08% or if interpreted then the monopoly of the plant's structure and tissue is quite feasible.

Implementation of Inquiry Method on Students' Critical Thinking Ability in the Concept of Structure and Function of Plant Networks

This study aims to determine the implementation of inquiry methods that can improve students' critical thinking skills on the concept of structure and function of plant tissues at the Sekolah Keberbakatan Olah Raga Negeri Aceh (Aceh State Sports School). The population of this research is the many 112 students of class XI of the Sekolah Keberbakatan Olah Raga Negeri Aceh. The sample in this study were 26 students in class XI-1 as an experimental class and 26 students in class XI-2 as a control class. The method used is a descriptive method with a structural approach. Data collection is done by test techniques and data processing using the t-test formula. The results of the data analysis showed that the average ability or average value of class XI-1 students of the Sekolah Keberbakatan Olah Raga Negeri Aceh in taking the test received 80.7. While the average value of class XI-2 students of the Sekolah Keberbakatan Olah Raga Negeri Aceh in taking the test gets 70. Based on the price of t-counts and t-tables at a significant level of 0.05 with db: 50 of the sample class XI, then t- the count is 6.40 and the t-table is 1.66. So that the hypothesis proposed the implementation of inquiry methods can improve students' critical thinking skills on the concept of the structure and function of plant tissues in the Sekolah Keberbakatan Olah Raga Negeri Aceh is Accepted. It is recommended that this research can increase knowledge through the use of inquiry methods in all biological science subject matter.

THE TYPE OF COOPERATIVE LEARNING EVERYONE IS A TEACHER AND IMAGE MEDIA AT STRUCTURE MATERIAL AND PLANT NET WORK CLASS VIII J ODD SEMESTER 2018/2019 IN MIDLE SCHOOL 1 KARANGTANJUNG

ABSTRA CT The low reading interest, motivation, and student learning readiness in school are some of the factors that cause the process of learning to be hampered and the difficulty of these students in mastering the material, especially the structure and function of plants. This is intended by 78% of class VIII J students who have not achieved the minimum completeness criteria. The purpose of this Classroom Action Research (CAR) is to increase student learning outcomes in the material structure and function of plants through cooperative learning, everyone is a teacher here and the use of media images. In this study PTK was conducted in 2 cycles and the instruments used were multiple choice tests and student questionnaires. The results of the study showed that cooperative learning for everyone is a teacher here and the media image can improve students' cognitive learning outcomes by 12.37%. The results of the learning questionnaire showed satisfactory results because some students gave a positive response to the application of learning with everyone is a teacher here and media images. Keywords : Learning Outcomes, everyone is a teacher here, picture media, structure and function of plant tissue, and Classroom Action Research

IMPROVING STUDENT'S COGNITIVE LEARNING OUTCOME THROUGH DISCOVERY LEARNING MODEL IN STRUCTURE AND FUNCTION OF PLANT TISSUES SUBJECT

<p><em>Discovery learning model encourages learners to find new knowledge and to look for the solution of problems or odd situations. The model provides an opportunity for students to actively participate in building knowledge that they would gain during learning. The research aims to improve student's cognitive learning outcome and activities through discovery learning model in the subject of the Structure and Function of Plant Tissues in SMP Negeri (Public Junior High School) 4 Ternate. The research is a classroom action research in the academic year of 2018/2019. The action research is conducted in two cycles. The research result indicates that the application of discovery learning model could improve the cognitive learning outcome and learning activities among students at class VIII-4 of SMP Negeri 4 Kota Ternate in the subject of the Structure and Function of Plant Tissues. </em></p>

PKM Pelatihan Pemanfaatan Bahan Bekas Sebagai Media Pembelajaran IPA bagi Kelompok Guru IPA

Based on observations at SMP Nusantara Indah Sintang and SMP Panca Setya 2 Sintang as a schoolspartner, it is seen that the condition of the laboratory is inadequate wherethe available of the tools and materials are less. Science Teachers did not innovate and create creations to overcome the problem. In addition, practicum activities are rarely done, including in utilizing the surrounding environment. Science Teachers tend to do learning process with theory. Therefore, the joint proponent cooperates to overcome the problem through the program of Pengabdian Kepada Masyarakat (PKM). This PKM program is aims to improve teachers' skills in designing and developing learning media with unused materials. The method used in the achievement of the goal is the implementation of inservice in the form of training and mentoring. The training was carried out is the training of techniques to design learning media with used materials. The results of the training is there are six media developed i.e linear motion, simple machine, digestive system, additive substances, structure and function of plant tissue, and circulatory system.

Profile of biology prospective teachers’ representation on plant anatomy learning

This study aims to obtaining students’ representation ability in understanding the structure and function of plant tissues in plant anatomy course. Thirty students of The Biology Education Department of Sriwijaya University were involved in this study. Data on representation ability were collected using test and observation. The instruments had been validated by expert judgment. Test scores were used to represent students’ ability in 4 categories: 2D-image, 3D-image, spatial, and verbal representations. The results show that students’ representation ability is still low: 2D-image (40.0), 3D-image (25.0), spatial (20.0), and verbal representation (45.0). Based on the results of this study, it is suggested that instructional strategies be developed for plant anatomy course.

MENINGKATKAN KREATIVITAS BELAJAR BIOLOGI SISWA MELALUI PENERAPAN METODE QUANTUM TEACHING DI MADRASAH ALIYAH NAHDATUL ULAMA BATANG TORU

This research was carried outMadrasah Aliyah Nahdatul Ulama Batang Toru years lessons 2015-2016.This type of research is Research Action class (Classroom Action Research) using two cycles of learning. Each cycle starting from the planning, implementation, observation, and reflection. Data collecting techniques used is the test of creativity and observation. Data collection tools used is sheet tests the creativity and student activity observation sheet. Based on the results of the research action class that do obtain test results of creativity learning of biology students ranging from cycle to cycle I II was 1872 with an average of 72.0 with thepercentage of completeness (61.5%) and cycle II 2191 with an average completeness percentage with 84.27 (84.62%). Based on the analysis of data obtained the value of the observation activities of students in cycle I of 66.92% and cycle II of 82.30% observation rating and performance teacher at 67.25% of cycle I and cycle II of 92.9%. In cycle II, has experienced an increase of cycle I and already meets the criteria of research indicators of achievement, then this study finalized on cycle II.Keywords:Creativity, Quantum Teaching method, structure and function of plant tissue.

PENGEMBANGAN PERANGKAT PEMBELAJARAN IPA DENGAN STRATEGI PREDICT-DISCUS-EXPLAIN-OBSERVE-DISCUS-EXPLAIN (PDEODE) UNTUK MEMINIMALISASI MISKONSEPSI SISWA SMP

This research had aimed to develop a Natural Science Learning Material with PDEODE strategy to minimize misconceptions of Junior High School students on material structure and function of plant tissue. The learning instrument is developed by using 4-D model with a try out-design namely one group pre-test - post-test design. The lesson plan has been tried out to 25 students’ of VIII-B class SMP Raden Rahmat Surabaya in the odd semester of 2016/2017 academic year. The data collection apply data validation, observation, achievement test, and questionnaire. The research data were analysed descriptively both qualitative and quantitative. The research findings were as follows: (1) The validity of the learning instrument which comprises Lesson Plan, Student Book, Student Worksheet, and a valid Identify Misconceptions Instrument; (2) The practicality of the learning instrument that can be found from: (a) the implementation of the lesson plans that is categorized as ‘good’, (b) the students’ activities and (3) The effectiveness of the learning instrument that was reviewed through: (a) the decrease misconception student from pretest to postest;; and (b) the response of students’ . Based on the data analysis, it can be concluded that the Natural Science Learning Instrument based Predict-Discuss-Explain Observe-Discuss-Explain (PDEODE) strategy was feasible to minimize of misconceptions student’s Junior High School.

Methionine and S-methylmethionine exhibit temporal and spatial accumulation patterns during the Arabidopsis life cycle.

Methionine is a nutritionally essential sulfur-containing amino acid found at low levels in plant tissues. Yet, the factors that regulate its synthesis and accumulation in seeds are not fully known. Recent genetic studies demonstrate that Arabidopsis seeds are able to synthesize methionine de novo through the aspartate family pathway similarly to vegetative tissues; however, additional biochemical studies suggest that the S-methylmethionine (SMM) cycle also plays a major role in methionine synthesis in seeds. To better understand the contribution of these two pathways to methionine synthesis, we have sampled various vegetative and reproductive tissues during the Arabidopsis life cycle and determined the contents of soluble and protein-incorporated methionine, SMM, as well as the expression levels of the key genes involved in these two pathways. Our results strengthen the hypothesis that SMM that is produced in the rosette leaves from methionine contributes to methionine accumulation in seeds. However, the SMM cycle may have additional functions in plant tissues since its key genes were expressed in all of the examined tissues, although at different rates. The accumulation patterns of soluble and protein-incorporated methionine during the Arabidopsis life cycle were found to be similar to most of the other amino acids, especially to those belonging to the branched-chain and aromatic amino acids that are produced in chloroplasts together with methionine. This indicates that similar factors regulate the levels of amino acids during development.

Postharvest Control of Rhizopus stolonifer in Peach (Prunus persicaL. Batsch) Fruits Using Salicylic Acid

AbstractOne of the most damaging pathogenic molds in peach fruits during warehousing period is Rhizopus stolonifer that significantly reduces storage time. Salicylic acid (SA) plays different crucial functions in plant tissues. In this study, the inhibitory effect of SA treatment on the growth of R. stolonifer was evaluated in vitro and in vivo. The results obtained from in vitro experiments showed that SA significantly reduced Rhizopus growth at all concentrations and, at 5 mM, the growth was completely inhibited. In vivo experiments showed relatively high level of inhibition, though the postimmersion treatment as compared with the preimmersion treatment resulted in higher inhibitory effects. Regarding inhibitory effects of SA on controlling R. stolonifer, its application on peach fruits during postharvest period can be a promising strategy to control the growth and development of this fungus and enhancement of the warehousing time of the treated fruits.Practical ApplicationsRhizopus stolonifer with serious and significant damages to agricultural products makes it essential to develop the effective control methods of this pathogen. Today, the use of synthetic chemicals for food preservation is largely abolished, because they can be hazardous for human and animal health. Therefore, there is a huge need for natural compounds with fungicidal attributes. The results of the current study illustrated the effective performance of salicylic acid (SA), one of the known phytohormones, for controlling R. stolonifer growth in peach fruits. The application of immersion treatment inside SA solution can reduce the growth and development of the resulting diseases and also protect the fruits against the future damages of it. Furthermore, SA treatment can inhibit the growth of other pathogenic molds and reduce their injury to fruits.

Targeted metabolite profiling provides a functional link among eucalypt taxonomy, physiology and evolution

Adaptation to aridity is considered a major factor in the evolution of the genus Eucalyptus. For the first time, targeted metabolite profiling has uncovered a quantitative yet discrete phytochemical link with eucalypt taxonomy. The distribution of cyclitols among Eucalyptus species, and a range of other Australian tree genera, support their proposed functions in plant tissues and provide putative links with the acclimation of trees to arid environments.

Salinity and the growth of non-halophytic grass leaves: the role of mineral nutrient distribution.

Salinity is increasingly limiting the production of graminaceous crops constituting the main sources of staple food (rice, wheat, barley, maize and sorghum), primarily through reductions in the expansion and photosynthetic yield of the leaves. In the present review, we summarise current knowledge of the characteristics of the spatial distribution patterns of the mineral elements along the growing grass leaf and of the impact of salinity on these patterns. Although mineral nutrients have a wide range of functions in plant tissues, their functions may differ between growing and non-growing parts of the grass leaf. To identify the physiological processes by which salinity affects leaf elongation in non-halophytic grasses, patterns of mineral nutrient deposition related to developmental and anatomical gradients along the growing grass leaf are discussed. The hypothesis that a causal link exists between ion deficiency and / or toxicity and the inhibition of leaf growth of grasses in a saline environment is tested.

Haberlandt's Views on the Physiological Functions of Plant Tissues

Haberlandt's Views on the Physiological Functions of Plant Tissues