Internal Structure of Vegetative Part in Euphorbia helioscopia L.
Issue:
Volume 2, Issue 4, December 2022
Pages:
69-74
Received:
13 November 2022
Accepted:
8 December 2022
Published:
29 December 2022
DOI:
10.11648/j.reports.20220204.11
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Abstract: A notable progress has occurred in the anatomical study of vascular plants and its applications in taxonomy. The major criteria selected for the study involves internal structures of Euphorbia helioscopia L. Free hand transverse sections were prepared from stems, leaves and roots and after stained it was observed under light microscope. Foliar surface was also studied in the present investigation. As major portions in stem section, cortex, vascular and pith zones were occupied by 19.70%, 35.60% and 44.70%, respectively. At the periphery beneath epidermal layer, the hypodermis was formed by an angular collenchymatous parenchyma with small intercellular spaces and contained laticiferous canals. The stem axis contains a continuous ring of vascular tissue. The xylem was radially arranged with uniserrated medullary rays. The phloem was narrow containing laticiferous canals. Pith was made up of parenchymatous cellulosic cells with numerous auriferous cavities. The results of leaf anatomy showed dorsiventral mesophyll where palisade cells (35.80 m in diameter) and spongy cells (12.80 m in diameter) were arranged. Laticiferous canals were observed in mesophyll cells. The ratio of midrib region composed of 61.54% cortical zone and 38.46% vascular zone. The transverse section of root was circular in outline, encircled by cork cells. A wide xylem layers was present and it was radially arranged vessels, tracheids, uniserrated and multiserrated medullary rays and extended up to phloem. The major portion i.e., cortex, vascular and pith were composed of 25%, 65% and 10%, respectively. Laticifers were readily seen in the cortical parenchyma and secondary phloem in the root. The study conducted here layout a clear anatomical view of Euphorbia helioscopia will be helped to solve the taxonomical obscurity.
Abstract: A notable progress has occurred in the anatomical study of vascular plants and its applications in taxonomy. The major criteria selected for the study involves internal structures of Euphorbia helioscopia L. Free hand transverse sections were prepared from stems, leaves and roots and after stained it was observed under light microscope. Foliar surf...
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The Imperiosity of Children's Literature as a Resource for the Teaching and Learning of Reading in Malanje – Angola
Francisco Soares Paulo António,
João Domingos Pedro,
Dorcas da Ressurreição Kipipa Kuku
Issue:
Volume 2, Issue 4, December 2022
Pages:
75-83
Received:
24 August 2022
Accepted:
7 September 2022
Published:
29 December 2022
DOI:
10.11648/j.reports.20220204.12
Downloads:
Views:
Abstract: The present work deals with "the imperiousness of children's literature as a resource for teaching and learning to read", which is a subject that has been widely discussed in the world. The study's general objective is to know the importance of children's literature as a resource for teaching and learning to read in 3rd grade students of Primary School N.º 74, in the municipality of Malanje. The research carried out had 4 participants, of which 3 from the teaching class and 1 from the administrative class, students from the 3rd class also participated who were targets of observation. The research had as methodology used the qualitative-descript¬ive approach, in terms of nature, in the present study, the basic strategic research model prevails, whose focus is to produce useful knowledge with value in practical studies, in the specific case of children's literature. The instrument used for data collection is the observation script for the students, the structured interview guide applied to the teaching and administrative staff. As support for the present investigation, it appropriated Vygotsky's cultural-historical theory, also known as interactionist theory, which values the subject from his culture to the social encounter with other members outside his culture. Through the research carried out, it was noticed that children's literature is really imperative for the teaching-learning of reading, but it has been little applied in the school complex n.° 74 because, according to the research instrument used, it was verified that there is a high number of students who do not have much contact with children's literature at school and therefore this has triggered immense difficulties both in teaching and learning to read. Thus, it is understood that there is a need to create a library, as well as moments that provide reading for the proper monitoring of children/¬students concerning children's literature in that institution.
Abstract: The present work deals with "the imperiousness of children's literature as a resource for teaching and learning to read", which is a subject that has been widely discussed in the world. The study's general objective is to know the importance of children's literature as a resource for teaching and learning to read in 3rd grade students of Primary Sc...
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