Category 4 · Science & Technology

Plant Biology and Nutrition

8 micro topics in Science & Technology for UPSC Prelims, in book order: Photosynthesis: Light Reaction and Dark Reaction; Plant Water Regulation (Transpiration and Osmosis); and 6 more.

4.1

Photosynthesis: Light Reaction and Dark Reaction

Photosynthesis is the process by which green plants, algae and some bacteria use light energy to make carbohydrates from carbon dioxide and water, and release oxygen. The overall reaction is six molecules of carbon dioxide plus…
4.2

Plant Water Regulation (Transpiration and Osmosis)

Plant water regulation is the way plants take up, move and lose water while keeping their cells firm and their tissues working. Water moves into root cells by osmosis, from a region of higher water potential…
4.3

Reproduction in Plants: Sexual and Asexual Methods

Plants reproduce by sexual and asexual methods. Sexual reproduction in flowering plants takes place in the flower, whose parts are the sepals, petals, stamens, which are male with anthers that make pollen, and carpels, which are…
4.4

Plant Nutrition and Classification by Energy/Carbon Source

Plant nutrition is the way plants obtain the energy and materials they need to live. Organisms are classified by their source of energy and carbon. Autotrophs make their own organic food from inorganic carbon dioxide: photoautotrophs…
4.5

Animal Nutrition

Animal nutrition is the way animals obtain and use food for energy, growth and repair. All animals are heterotrophs. Their modes of nutrition include holozoic nutrition, in which solid food is ingested, digested inside the body…
4.6

Cellular Respiration in Plants

Cellular respiration in plants is the breakdown of food, mainly sugars made in photosynthesis, to release energy as ATP in all living cells, day and night, in roots, stems, leaves, flowers and seeds. It follows the…
4.7

Economic Zoology – Beneficial Animals: Corals, Earthworms (Vermiculture), Prawns, Lobsters, Crabs, Pearl Oysters, Fishes

Economic zoology is the study of animals that are useful or harmful to humans. Beneficial animals provide food, materials, medicines and ecological services. Corals are marine animals, related to jellyfish, whose limestone skeletons build coral reefs…
4.8

Economic Zoology – Harmful Animals: Disease-Causing Organisms, Vectors, Poisonous and Fouling Organisms, Pests

Harmful animals are those that cause disease, injury or economic loss to humans, crops, stored food and property. They include disease-causing organisms such as parasitic worms and protozoa, and vectors, which are animals that carry disease…

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Frequently asked questions

Which topics are in Plant Biology and Nutrition?

Plant Biology and Nutrition has 8 micro topics in Science & Technology: Photosynthesis: Light Reaction and Dark Reaction; Plant Water Regulation (Transpiration and Osmosis); Reproduction in Plants: Sexual and Asexual Methods; Plant Nutrition and Classification by Energy/Carbon Source; Animal Nutrition; Cellular Respiration in Plants; Economic Zoology – Beneficial Animals: Corals, Earthworms (Vermiculture), Prawns, Lobsters, Crabs, Pearl Oysters, Fishes; Economic Zoology – Harmful Animals: Disease-Causing Organisms, Vectors, Poisonous and Fouling Organisms, Pests.

Is Plant Biology and Nutrition important for UPSC Prelims?

Plant Biology and Nutrition is a part of the UPSC Prelims Science & Technology syllabus map on MaargX UPSC. Each of its 8 published topics has key terms, a Mains angle and practice questions.