Quiz on Poaceae, Malvaceae , Asteraceae – NEW NEET Add on
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Electrons generally move from a more negative (lower) or less positive redox potential to less negative or a more positive (higher) redox potential, reflecting a downhill energy flow. However, in the Z-scheme of photosynthesis, there are two key points where light energy is used to excite electrons, allowing them to move uphill to a more positive redox potential.
Electron Carrier Redox Potential (mV) Water (H₂O) +820 mV P680 (PSII reaction center) +1,200 mV Pheophytin (Pheo) -500 mV Plastoquinone (PQ) +80 mV Cytochrome b6f complex +300 mV Plastocyanin (PC) +370 mV P700 (PSI reaction center) +600 mV A₀ (first acceptor in PSI) -1,100 mV A₁ (Phylloquinone) -800 mV Iron-sulfur clusters (FX, FA, FB) -705
Biodiversity-2-NCERT-Species Diversity-According to the IUCN (2004), the total number of plant and animal species described so far is slightly more than 1.5 million
Category Type Number of Species Animals Total 10,50,000 Vertebrates 52,500 Fishes 25,000 Amphibians 5,750 Reptiles 7,500 Birds 9,000 Mammals 4,500 Insects 7,50,000 Crustaceans 70,000 Mollusca 85,000 Other Invertebrates 1,25,000 Plants Angiosperms 2,50,000 Fungi 69,000 Bryophytes 16,600 Algae 27,000 Pteridophytes (Ferns) 10,000 Gymnosperms 600
Biodiversity-1 for NEET
Category Details Introduction An alien would be amazed by the enormous diversity of life on Earth. Humans also find this diversity astonishing, with more than 20,000 species of ants, 300,000 species of beetles, 28,000 species of fishes, and nearly 20,000 species of orchids. Ecologists’ Key Questions Why are there so many species? Did such great
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ECOLOGICAL SUCCESSION for NEET – Conceptual Only
Concept Description Community Response to Environment Communities change in composition and structure over time in response to changing environmental conditions. This change is orderly, sequential, and leads to a climax community, which is in near equilibrium with the environment. Ecological Succession The gradual and predictable change in species composition of a given area over time.
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The pyramid of biomass in sea is generally inverted because the biomass of fishes far exceeds that of phytoplankton. Isn’t that a paradox? How would you explain this
Concept/Reason Explanation Standing Crop The standing crop refers to the total biomass of organisms (like phytoplankton) present in an ecosystem at a given moment. In marine ecosystems, the standing crop of phytoplankton is small, but this doesn’t limit their ability to support consumers. Turnover Rate Turnover rate refers to how quickly organisms (like phytoplankton) are
NCERT-why in an aquatic ecosystem, Grazing Food Chain is the major conduit for energy flow. As against this, in a terrestrial ecosystem, a much larger fraction of energy flows through the detritus food chain than through the Grazing Food Chain .
Aspect Aquatic Ecosystem (Grazing Food Chain Dominant) Terrestrial Ecosystem (Detritus Food Chain Dominant) Primary Producers Mostly phytoplankton, which are consumed directly by herbivores. Dominated by plants, trees, and shrubs. Most plant biomass is not consumed by herbivores directly. Energy Flow Energy moves directly from primary producers (phytoplankton) to herbivores and higher trophic levels. A large
NEET-Anatomy of Flowering plants
Plant Tissues: Dermal, Vascular, and Ground Tissues Plant tissues fall into two general categories: meristematic tissue, and permanent (or non-meristematic) tissue… Dermal tissue covers and protects the plant, and controls gas exchange and water absorption. Vascular tissue transports water, minerals, and sugars to different parts of the plant… Ground tissue carries out different functions based
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When we say that parenchyma cells are generally isodiametric
Parenchyma Cells – Isodiametric Nature The Cells of the Parenchyma are Generally Isodiametric. Why? When we talk about parenchyma cells, a common description is that they are isodiametric—meaning that their dimensions (length, width, and height) are more or less equal. But why are these cells structured this way, and what purpose does it serve? What
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Planner for Enthusiast 2024
Comprehensive Study Planner Comprehensive Study Planner for ACME Pre-Medical Students Weekly Time Distribution: Description Hours per Week Total Study Time 105 hours Coaching Days (4 Days) Coaching Time (8:00 am – 2:00 pm) 24 hours Self-Study Time 36 hours Group Study (ACME, 2:45 pm – 7:00 pm) 17 hours Non-Coaching Days (3 Days) Self-Study Time
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