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TRANSPORT IN PLANTS

December 21, 2018 MADHAVAKRISHNA ACADEMY 0

Transport over a longer distance proceeds through the vascular system is called translocation. In rooted plants, transport in xylem is unidirectional from roots to the stems. Organic and mineral nutrients undergo multidirectional transport. The molecule of any substance move away from their higher concentration to their lower concentration, this process […]

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CELL CYCLE AND CELL DIVISIONS

December 21, 2018 MADHAVAKRISHNA ACADEMY 0

The cell cycle is the series of events that takes place inside a cell thus leading to cell division and cell duplication. The cell cycle is divideds into two brief stages : (A) Interphase – during which the cell grows and accumulates nutrients needed for mitosis and DNA material duplicates […]

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Cell structure

December 21, 2018 MADHAVAKRISHNA ACADEMY 0

All living organism are made up of cell. cell is a structural and functinal unit of organism. some organisms are unicellular while others are multicellular. Each cell is having potentiality to produce a new individual.This is called totipotency of cell. On the basis of presence or absence of membrane bound […]

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Cockroach Comparative Study

December 18, 2018 MADHAVAKRISHNA ACADEMY 0

Cockroach show characteristic features in segmentation, symmentry and body organization. Itsscientific name is Periplaneta americana.Morphology – Body is covered with hard chitinous exoskeleton. Size about 25 to 45 mm long cmand 8 to 12 broad found all over the world colour varies. Body is divisible into three regions. Head,thorax, abdomen. […]

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Morphology of Plants

December 18, 2018 MADHAVAKRISHNA ACADEMY 0

Flowering plants are the most dominant plants of the earth, exhibit some variations inmorphology, possess well-developed shoot and root systems, which is positively geotropic andhydrotropic and negatively phototropic, and develops from radical. Dicot plants have tap root systemand monocots have fibrous root system. Roots help in fixation of plant in […]

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Animal Tissue

December 18, 2018 MADHAVAKRISHNA ACADEMY 0

Tissue is the group of cells having similar structure & function. Animals contain 4 basic types oftissues which are :- epithelial tissue, connective tissue, muscular tissue and nervous tissue. Epithelialtissue can be derived from any of the three germinal layers. Epithelial tissues are of different types suchas : Squamous, cuboidal, […]

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Plant Anatomy Plant Tissues

December 18, 2018 MADHAVAKRISHNA ACADEMY 0

The plant body is made up of cells.cells are organized to form tissues,tissue system and organs in a seqential organization. Study of the internal strctural organization of plant organs is known as plant anatomy. Two groups of the angiosperms i.e.Dicot and monocot show different anatomical composition. Tissue : Tissue is […]

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Classification of Plant Kingdom

December 15, 2018 MADHAVAKRISHNA ACADEMY 0

IMPORTANT POINTSFive kingdom classification system was given by Whittaker on the basis of following four criteria :(i) Cell structure(ii) Body Structure(iii) Mode of nutrition – Autotrophic and Heterotrophic(iv) Major ecological role.The five kingdoms are Monera, Protista, Fungi, Plantae and Animalia.The three-domain system is closely based on five-kingdom system.The Eukarya are […]

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Classification of Living Organisms

December 15, 2018 MADHAVAKRISHNA ACADEMY 0

Nature is formed by nonliving and living organisms. One who has life and performs biologicalprocesses and manifests to enviroment is called living organism. Living organism possess certain characterslike-reproduction, growth, development, reaction with environment adaptation and death. Besides theseit has characteristics like metabalism, entropy, efficiency to maintain heredity. It produces new […]

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Cell Cycle and Cell divisons

December 13, 2018 MADHAVAKRISHNA ACADEMY 0

The cell cycle is the series of events that takes place inside a cell thus leading to celldivision and cell duplication. The cell cycle is divideds into two brief stages : (A) Interphase– during which the cell grows and accumulates nutrients needed for mitosis and DNA materialduplicates in this stage […]