i.3. Exploring the Details of Plant Organisms: Parts, Structure, Function, and Reproduction

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i.3. Exploring the Details of Plant Organisms: Parts, Structure, Function, and Reproduction

Stem	In plant organisms, It carries water and minerals upwards to other parts of the plant attached with it.
Leaf	It is a thin, flat, usually green structure attached to the stem or branch of a plant. The part of the leaf by which it is attached to the stem is called petiole. The broad, green part of the leaf is called lamina. The lines on the leaf are called veins. A prominent line in the middle of the leaf is called the midrib. The design made by veins in a leaf is called the leaf venation. Reticulate venation has net like design on both sides of midrib. Some other leaves like grass have parallel veins running through it. This is called parallel venation. A leaf
Photosynthesis	Leaves of plant organisms prepare their food in the presence of sunlight, using water, carbon dioxide and a green coloured substance (chlorophyll) present in them. This process is called photosynthesis. Oxygen is given out in this process. The food prepared by leaves ultimately gets stored in different parts of the plant. The leaves also lose water through transpiration.
Roots	They help plant organisms in holding the plant firmly to the soil and anchor the plant to the soil. The main root is called tap root and the smaller roots are called lateral roots. Some plants do not have a main root. All their roots seem similar and these are called fibrous roots. Leaf venation and root type are related in most plants. Taproots have net like venation while fibrous roots have parallel venation. Roots absorb water and minerals from the soil and the stem conducts these to leaves and other parts of the plant. The leaves prepare food. This food travels through the stem and is stored in different parts of the plant. Some food is eaten as root like carrot, radish, sweet potato, turnip and tapioca. a) Taproot b) Fibrous Roots
Flower	Petals are the prominent parts of an open flower. Different flowers have petals of different colors. The parts made of small leaf-like structures are called sepals. The innermost part of the flower is called the pistil. The pistil is the female reproductive organ of a flower. It contains stigma, style and ovary. Bud and Flower Ovary is the lowermost and swollen part of the pistil. Small bead-like structures inside the ovary are called ovules. Parts of a Pistil The stamen is the male reproductive organ of a flower. It contains the anther and filament. Parts of a Stamen The anther is the top part of the stamen, where pollen is produced and stored. The filament is the slender stalk that supports the anther. Parts of a flower

[Parts of a Plant]