Jain Biology ► Appendix ► Glossary

Posted: 15.10.2009

Anther

See Stamen.

Angiosperms

Flowering plants with seeds en-closed in a fruit.

Asexual Reproduction

Reproduction by spores.

Assimilation

Conversion of digested foods into protoplasm.

Binomial Nomenclature

The system of denoting a plant or an animal by two Latin names the first for its genus and the second for its species.

Carpel

Floral part bearing ovules.

Centrosome

An area in animal cell which in-cludes a pair of small granules, called centrioles.

Chioroplast

A plastid which is green due to chlorophyll, pigment which makes plants look green.

Coelenteron

See gastro—vascular cavity.

Crop

The dilated middle pan of oesopha-gus in birds. It stores and softens hard grains.

DNA

Deoxyribonucleic acid. A self duplicating molecule which is the genetic material of living organisms

Enzymes

Catalysts found in living cells. They are proteins which catalyse many reactions.

Epiphyte

A plant throwing from another plant using it merely for support. See parasite

Fertilization

Process of union of male and female gametes.

Gastrovascular cavity

The central cavity in animals (Coelenteron) like Hydra where digestion occurs.

Genus

A group of related species.

Gills

Specialised respiratory organs in fish, lobster etc.

Gizzard

The posterior part of the stomach in birds.

Haustoria

Parasitic roots for drawing nutri-tion from the host.

Lichen

A co—operative society of alga and fungus.

Locomotion

Movement for change of position.

Nucleic acid

Chemical compound found in all living organisms, now thought very important in inherited material; forms complex compounds (nucleo - proteins) with proteins. See DNA & RNA.

Organelle

Any structurally distinct body within CYTOPLASM of cells.

Ovule

Structure produced by a flower, which later develops as a seed.

Parenchyma

Basic tissue of plants made up of cells, cellulose and inter—cellular spaces.

Plastids

Organelles present in plant cells, carrying pigments. See chlorophyll.

Plumule

Immature shoot system forming part of embryo of seed.

Pollen

Powdery substance discharged from anther of flower, male element in pollination.

Pollination

An act of transfer of pollen from anther to the stigma of the flower of same species.

Radicle

Immature root forming part of embryo of seed. Cf plumule.

Ribisomes

Organelles involved in assembling protein molecules as ordered by DNA.

RNA

Ribonucleic acid - self duplicat-ing nucleic acid concerned in protein synthesis.

Ruminant Stomach

A four chambered stomach in mammals like cattle, sheep etc.

Sexual Reproduction

Reproduction by gametes or sex cells.

Species

A term denoting a group of related plants or animals.

Stamen

Part of flower which produces male sex cells, comprising stalk plus head (anther) with pollen sacs that burst to release pollen grains.

Tissue

A group of similar cells doing one particular function.

Trachea

Term used for:—wood vessels in plants wind pipe in higher animals Breathing tubes for insects.

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