All Definition Of Biology For Class 10 [A to Z]

Biology Glossary 'or' some basic defination for class 10

Acquired Trait: Trait organism that develops in response to the environment. 

Adaptation: Change in the structure or functioning of an organism that makes it better suited to its environment.

Analogous Organs: Organs which have different basic structure but have similar appearance and perform similar functions. 

Arteries: Thick - walled vessels that carry blood from the heart to various parts of the body.

Biodegradable Wastes: Waste materials which can be broken down to simpler non poisonous substances in nature by the action of bacteria.

Biological Magnification: Progressive accumulation of non - biodegradable chemicals at each successive level in the food chain. 

Carnivores: Animals that eat only other animals.

 

Consumers: Organisms which consume food prepared by producers. 

Cross - Pollination: Transfer of pollen grains from anthers of a flower to the stigma of another flower. 

Diaphragm: A dome - shaped musculo - fibrous partition in between thorax and abdomen , just below the lungs.

Diastole: Relaxation of heart chambers.

Ecosystem: Unit that comprises all living and non - living components of a particular area interacting with each other.

Excretion: The process of elimination of metabolic wastes from the body.

 

Fertilisation: Fusion of the male and female gametes. 

Food Chain: Flow of energy in a sequential process of one organism eating the other and itself being eaten by another in turn. 

Fossils: Impressions of dead animals or plants that lived in remote past.

Genetic Drift: Random change in the frequency of gene in a population over successive generations due to sampling error in gametes. 

Herbivores: Animals that eat only plants.

Heredity: Transmission of Characters in living beings from parents to offsprings, generation after generation. 

Heterotroph: Organisms (plants and animals) which cannot manufacture their own food and thus depend on organic substances. 

Homologous Organs: Organs which have some basic structure but perform different functions. 

Hormones: Chemical messengers that are secreted in a very small amount from the endocrine glands or from neuro-secretory cells directly into the blood stream. 

Inherited trait: Trait of an organism caused by a change in its genes. 

Life processes: Basic functions performed by living organisms to maintain their life on earth. 

Menarche: Beginning of menstruation. 

Menstration: Periodic discharge of blood,mucous, uterine mucosa pieces, etc. from the uterus.

Non-biodegradable Wastes: Waste materials that cannot be broken down into simpler non-poisonous substances in nature. 

Nutrition: Physiological process in which living organisms obtain nutrients. 

Phagocytosis: Process by which a cell engulfs food from its surroundings. 

Pollination: Transfer of pollen grains from the anther to the stigma of the same flower or different flower of the same species.

Producers: Organisms which can prepare their own food from simple inorganic substances. 

Rain water harvesting: Method of collecting rainwater and storing it to use during the non rainy season. 

Receptors: Organ which is sensitive to a particular type of stimulus. 

Reflex action: Immediate response of the spinal cord to a sudden impulse. 

Regeneration: Ability of an organism to replace its lost body part. 

Reproduction: Process by which an organism produces a copy of nits own for perpetuation of its race. 

Respiration: Process of oxidation of food molecules and releasing energy. 

Saprophytes: Organisms which absorb their organic nutrition from dead and decaying organisms. 

Scion: Portion of plant that is grafted on to the other plant. 

Self-pollination: Transfer of pollen grains from anthers to the stigma of the same flower or another flower of their same plant. 

Speciation: Development of a new species from the existing one. 

Systole: Contraction of heart chamber. 

Translocation: Transport of food from leaves to other parts of plants. 

Tropism: Movement of a plant in the direction of stimulus. 

Variations: Differences in characters (or traits) among individuals of a species. 

Vasectomy: Removal of a piece of vas deferens and the ligation of both ends. 

Viens: Thin-walled vessels with large lumen that bring blood back from the entire body to the heart.

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