Class 11

Salient Features Of Kingdom Monera

All prokaryotes, or unicellular creatures without nuclear membranes, belong to the Kingdom Monera. Eubacteria and archaebacteria are two phylogenetically separate families within this biological kingdom. Eubacteria and archaebacteria are genetical as distinct as eukaryotes (organisms with nuclear membranes, such as protists, plants, animals (invertebrates and vertebrates), and fungi). Archaebacteria and eubacteria differ morphologically in a […]

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants

Role of Fats

Fats are classified as those organic compounds which do not interact with water. Put in simple terms, most substances made of fats will not be miscible with water. The study of the function and structure of fats makes up a sizable part of the study of organic compounds. This is because they make up such

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants

Reproductive Structure of Flower

A flower has a stamen (male flower part) or pistil (female flower part), or both, as well as accessory elements such as sepal, petal, and nectar gland as a plant reproductive portion. The male reproductive organ is the stamen. Pollen (anther) and a lengthy supporting filament make up this structure. The female reproductive component of

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants

Reproductive Structure of Flower

A flower has a stamen (male flower part) or pistil (female flower part), or both, as well as accessory elements such as sepal, petal, and nectar gland as a plant reproductive portion. The male reproductive organs are the stamens. A pollen  (anther) and a lengthy supporting filament make up this structure. The female reproductive component

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants

Racemose and Cymose Inflorescence

When the main axis of the inflorescence extends continuously and flowers are present laterally on the floral axis, the inflorescence is said to be racemose. Flowers are arranged in an acropetal arrangement. Cymose: The main axis of the inflorescence does not grow continuously in the cymose kind of inflorescence. On the main axis, a flower

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants

Interaction with water

The structural and electrical properties of the water molecule are discussed in ‘The water molecule and its interactions.’ Two hydrogen atoms are joined by covalent bonds to one oxygen atom to form a water molecule. Hydrogen bonding is a sort of interaction in which water molecules interact with one another. The key to comprehending water

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants

Protochordata

This phylum consists of organisms which are considered as lower chordates. It consists of a huge range of organisms and also forms the major division of phylum chordata. These organisms are also known as acraniata as they do not possess a true skull. The main difference between vertebrate and protochordata is the absence of backbone

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants

Protista and Fungi

Introduction  Ernst Haeckel classification had three kingdoms: Kingdom Animalia, Kingdom Plantae, and kingdom protista. Of these, kingdom protista was further classified into protozoa, fungi, bacteria, and other microorganisms. On the other hand, R.H. Whittaker classified all the living organisms under 5 kingdoms. These kingdoms are Monera, Protista, Fungi, Plantae and Animalia. This system of classification

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants

Protista

Introduction Protists are assumed to be the common historical link between plants, animals, and fungi from which these three groups are branched out in the process of evolution. Protists are assumed to be the predecessor to plants, animals, and fungi, and the first eukaryotes. Protozoa, algae, and slime moulds are few examples of the members

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants

Protist Habitats

A protist (/protst/) is any eukaryotic organism (that is, an organism whose cells have a nucleus) that is not an animal, a plant, or a fungus. Protists include bacteria, fungi, and archaea. Even though it seems likely that protists descended from the same common ancestor (the last eukaryotic common ancestor), the fact that they are

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Anatomy of flowering plants: Tissue systems, Biology, Class 11, NEET, Structural Organisation in Animals and Plants