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GLOSSARY
GLOSSARY
Circulatory system: The system that helps in
Adulterant: Any substance that decreases the
purity and quality of food the transportation of substances to and from
various parts of the body
Androecium: The male reproductive part of a
fl ower Consumers/Heterotrophs: Organisms that eat
the food prepared by the producers
Arteries: The blood vessels that carry oxygen-
rich blood from the heart to diff erent body Corolla: The whorl which is next to calyx and is
parts made up of petals
Auricles: The two upper chambers of the human
heart Decantation: Pouring the clear water at the top
of a jar slowly into another jar once all heavy
Axis: An imaginary line running through the
particles settle down
centre of the earth
Decomposers: Organisms who break down or
decompose the dead remains of plants and
Balanced diet: A diet that contains all the
animals into nutrients important for the growth
nutrients in balanced amounts along with
of plants
roughage and water for the proper functioning
of our body Defi ciency diseases: Diseases that are caused
Biodegradable waste: Waste materials that due to lack of certain nutrients in the diet over
can be easily broken down (decomposed) by a long period of time
microorganisms into simpler substances Dispersal: The process by which the seeds are
Blood: A red-coloured fl uid which fl ows inside scattered away from the parent plants
the blood vessels Drought: Lack of rain for a long time leading to
Blood vessels: A network of tubes and channels drying of water bodies
inside the body through which blood fl ows
Eclipse: The partial or total blocking of the light
Calyx: The outermost whorl of a fl ower which is of the sun by a heavenly body like the earth or
made up of sepals the moon
Cardiac muscles: The muscles which make up Embryo: The multicellular structure formed as a
the heart result of division in zygote
Carnivores: Consumers who feed on the fl esh of Energy: The ability to do work
other animals
Chemical change: Any change in matter in Fertilisation: The fusion of male and female
which one or more new substances are formed gametes
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