Author Archives: I am hassan

Dispersal of Fruit & Seeds

Dispersal of Fruit & Seeds The plants are fixed to the ground therefore they must develop a mechanism for distribution of their seeds and fruits. Thus, they adopted a mechanism of dispersal. The dispersal of fruit and seed refers to the carrying of these structures to places away from the plants producing them. If there is no dispersal, then these ...

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Morphology of Fruit

Morphology of Fruit The simulation of fertilization causes series of changes, not in the ovule but also in the wall of ovary. As a result, into these changes, the ovule developed into seeds while the ovary form the fruit. The fruit may be defined as ripened ovary containing seeds. The wall of the fruit is known as pericarp. True Fruit: ...

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Morphology Of The Flower

Morphology Of The Flower Flower is highly modified reproductive shoot. A typical flower consists of four distinct circles of whorls of floral leaves, the calyx, corolla, androecium and gynoecium, arranged on the thalamus. The calyx comprises of usually green floral leaves, the sepals and forms the outermost protective whorl. The corolla comprises of variously coloured floral leaves, the petals presents ...

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Inflorescence

Inflorescence  The arrangement of flowers on floral axis or peduncle resulting in formation of groups is called inflorescence. An inflorescence may be; simple, compound or of special types according to the mode of branching. Simple Inflorescence A simple inflorescence maybe racemose or cymose according to the mode of branching. Racemose Inflorescence: In this type of inflorescence, the main axis continues ...

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Morphology of Plants Leaf

Morphology of Plants  Leaf Leaf is principal appendage of the stem or on branches of a plant. They arise from nodes and bear lateral buds in their axils. A leaf is a chief photosynthetic organ of a plant. They are developed in acropetal succession and are exogenous in origin. Leaf Morphology: Each leaf consists of a green, flattened portion, the ...

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Morphology of Plants – The Stem

The Stem The main stem is the portion of the primary axis of the plant which develops from the plumule axis. An axis, together with the leaves which it bears, is called a shoot. A branch is also a shoot, for it consists of an elongation axis or stem with its own set of leaves. Characteristics of Stem The stem ...

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Morphology Of Plants – The Roots

The Roots The root may be defined as the cylindrical plant organ which is devoid of chlorophyll, bearing no buds or leaves, and tending to grow downwards away from light. It is covered at its tip by the root-cap it bears fine, delicate hairs, the root-hairs which absorb water from the soil.  Types of Roots Roots may be classified into two ...

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Binomial Nomenclature Of Plants

Binomial Nomenclature  Plant Nomenclature: The assignment of scientific names to plants is called Nomenclature. Name is one of the most important ways of identifying an object. Names maybe common, proper, abstract or collective. Our choice of names for individuals is generally arbitrary, however, it imbibes a great influence of language, religion, culture and tradition. Since due to wide application and ...

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Botanical Plants Classification (Part 2)

Botanical Plants Classification (Part 2) Division: Gymnospermae The division Gymnospermae was placed in between dicotyledons and monocotyledons and is further classified into three orders. Gnetaceae Coniferae Cycadaceae This system has some refinements over that of de Condolle’s namely erection of a new series Disciflorae in their Polypetalae and its incorporation between the Thalamiflorae and Calciflorae, and revision of apetalous taxa. The gymnosperms were treated as the third taxon, ...

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Botanical Plants Classification (Part 1)

Botanical Plants Classification (Part 1) Classification           Classification is the arrangement of plants into groups having common characteristics. These groups are arranged into a system. Similarly, species of flowering plants are placed in a Genus; similar genera are grouped into Families; families with common features are arranged into Orders; orders into Classes and classes into Divisions. The Aim of Botanical ...

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