plants

DMPQ- What are directional and non-directional movements in plants?

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Directional Movements Directional changes are called tropic movements. Tropic movements are the one which occurs in the direction of the stimulus. Positive phototropism is responding by bending towards the sunlight which can be seen in shoots. Negative geotropism is growing away from the ground which is also shown by shoots. Roots exhibit negative photo tropism … Read more DMPQ- What are directional and non-directional movements in plants?

Medicinal And Aromatic Plants

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 Medicinal and aromatic plants Medicinal and aromatic plants constitute a major segment of the flora, which provides raw materials for use in the pharmaceuticals, cosmetics, and drug industries. The indigenous systems of medicines, developed in India for centuries, make use of many medicinal herbs. These systems include Ayurveda, Siddha, Unani, and many other … Read more Medicinal And Aromatic Plants

Diseases Of Plants Caused By Fungi

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 Diseases of plants caused by fungi Early Blight of Potato The disease is quite common in India, and occurs on about three week old plants. Since this blight occurs earlier than the ‘late blight’ of potato (caused by Phytophthora infestans), it is called ‘early blight.’ Prevention Measures:   Field sanitation and rotation of … Read more Diseases Of Plants Caused By Fungi

Plants

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 Plants Plant, any multicellular eukaryotic life-form characterized by photosynthetic nutrition (a characteristic possessed by all plants except some parasitic plants and underground orchids), in which chemical energy is produced from water, minerals, and carbon dioxide with the aid of pigments and the radiant energy of the Sun, essentially unlimited growth at localized regions, … Read more Plants

Usefulness Of Plants And Human Affairs

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 Usefulness of plants and human affairs (utility) Food Plants are the main source of food for humans. Plants, unlike humans and animals, manufacture their own food. They do so by the process known as photosynthesis in their green leaves by use of sunlight.  They can convert and store the light energy in the … Read more Usefulness Of Plants And Human Affairs

DMPQ: Explain the transport of water in Plants

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The survival of plants is dependent on a number of factors which include water, minerals, gases, and nutrients they receive. The movement of gas, water, and nutrients in plants are carried out in components. They take in carbon dioxide from the air through the stomata present in their leaves and they absorb compounds of nitrogen, … Read more DMPQ: Explain the transport of water in Plants

Transgenic Plants

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 Transgenic Plants Transgenic plants are plants that have been genetically modified by inserting genes directly into a single plant cell. Transgenic crop plants modified for improved flavor, pest resistance, or some other useful property are being used increasingly.   Transgenic plants are unique in that they develop from only one plant cell. In … Read more Transgenic Plants

Diseases Of Plants Caused By Viruses And Their Prevention

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 Diseases of plants caused by  viruses and their prevention Some of the same types of viruses that infect humans can also infect plants. Plants and humans do not transmit viruses to each other, but humans can spread plant viruses through physical contact. Most frequently, plants catch a cold when an insect or other … Read more Diseases Of Plants Caused By Viruses And Their Prevention