Life Science(Biology)

Hellenia specoisa Family: Costaceae Common name : Crepe Ginger, Wild Ginger Bengali : Keu Botanical description: Rhizome :  tuberous. Leaves : Simple, spirally arranged on the stem, oblanceolate or oblong, glabrous above,silky pubescent beneath with broad leaf sheaths. Inflorescence : Spikes terminal, more or less globose. Flowers white, large, fragrant, bracts bright red; stamen one, perfect,lip large with incurved margin. Fruit :  Globose or ovoid capsule bright red, dehiscing loculicidal; seeds black with fleshy white aril. Flowering & Fruiting : July-October Parts used: Rhizome and stem Medicinal use: Tripuri, Chakma,and Halam communities of Tripura utilize different parts of Hellenia specoisa for an array of survival, diatery and healthcare needs: (i)  Rhizome juice or paste has been used to treat fever, rash, asthma , anaemia, diabetes, skin diseases, rheumatism , bronchitis, and intestinal worms.[1,2,3] (ii) It is mentioned in the Kama Sutra a...

Tissue : Meristematic & Simple Permanent  ( For class IX) Q1 What is tissue? A tissue can be defined as a group of cells having common origin, structure and function. Q2 Types of tissue? Tissues are of two types – (i) Meristematic tissue and (ii) Permanent tissue. Q3 Meristematic tissue? Meristematic tissues are a group of young living cells that remain in a state of continuous division to form new and newer cells. Animals don't have Meristematic tissue. Q4 Properties of Meristematic tissue? (i) The cells of meristem are isodiametric in shape. (ii) They are tightly packed with negligible intercellular spaces. (iii) All cells of meristem are living. (iv) The cell wall is thin and composed of cellulose only. (v) Cells have large nuclei. (vi) Generally vacuoles are absent, if present are very small and scattered. (vii) Plastid and mitochondria underdeveloped. (viii) They are located in the growing regions only. Q5 Classify meristems on the basis of position. According ...

                             Q1 What is Planning? What are the different types of planning? Planning is a process of setting goals, defining actions to achieve those goals, and organizing the resources and efforts needed to carry out those actions.It involves anticipating future needs and circumstances , making decisions about the best course of action, and preparing for potential challenges or opportunities. Types of planning: (1)Strategic Planning: Strategic planning deals with the organization’s long term goals such as survival, growth ,etc. It involves setting long term objectives(three years or more) set by top management and deciding about the judicious deployment of resources to achieve those objectives .It generally includes the entire organization and includes formulation of objectives.It is often based on organization ‘s mission, which is its fundamental reason for existence.It tends to be a top managem...

  Law   of   Tolerance   or Shelford’s Law of Tolerance    (Plant Ecology: Botany Major, 4th Semester, UG Tripura University)  V.E.Shelford in 1913 opined that a factor could have a limiting effect at its minimum and maximum quantity on the survival and existence of an organism in the environment. Fig: Graphical representation of the Law of Tolerance  From the above graphical representation it is clear that organisms are limited in their growth and in their occurrence both by  (a) too little of an element or too little of an intensity of the factors  and (b) by too much of an element or too much of an intensity of the factors.i.e., at the zone of physiological stress and at the zone of intolerance. This law states that,” a certain organism’s survival and existence depends upon the multifaceted set of conditions within which each individual has definite minimum, maximum and optimum ecological factors to establish success”. Example: CO2 i...

  Botany Major ,NEP 2020,Tripura University.  Unit II, Microbiology II,  1.Significance of Indian Plant Bacteriologist P.Gunasekaran.  Professor Dr.Paramasamy ,PhD, DSc  Photograph Courtesy: The Biotech Research Society India( BRSI). Prof.Dr.P.Gunasekaran ,VC,VIT University Bhopal has 32 years of teaching and research experience in Microbiology, Biotechnology and genomics . Metagenomics and Bioprospecting , ko Molecular Biology and Genomics are his research area. His contributions are as follows: (1) Research Projects: 32 (2) Grants received: ₹5510 lakhs (3) Workshops & Conferences Organised: 20 (4) Students awarded: Ph.D. 44 ; M.Phil 25 (5) MSc students project: 87 (6) Publications in Journals: 175 (7) Book Chapters written: 30 (8) Papers presented in Conferences : 192 (9) Books written: 20         Dr.PGS has begged several National and International Awards and Fellowships and held many more Positions from Lecturer (1980) - S...