NCERT LINE BY LINE – BSI SIR FAN CLUB

Cleistogamy is a highly advantageous strategy in stable or harsh environments, where ensuring reproduction outweighs the need for genetic diversity. However, it is often complemented by chasmogamous flowers in plants that balance the need for self-pollination with opportunities for cross-pollination, allowing them to enjoy the benefits of both strategies.

NCERT LINE BY LINE, Sexual Reproduction in flowering Plants / Prof. Siddharth Sanghvi

Cleistogamous Flowers: Benefits and Features Aspect Description Protection Cleistogamous flowers near the soil level are protected from harsh environmental conditions like wind, rain, and excessive heat. Self-pollination Efficiency Being close to the ground minimizes disturbances, making the self-pollination process efficient. Energy Conservation Flowers save energy by not producing elaborate structures for pollinator attraction. Seed Dispersal […]

Cleistogamy is a highly advantageous strategy in stable or harsh environments, where ensuring reproduction outweighs the need for genetic diversity. However, it is often complemented by chasmogamous flowers in plants that balance the need for self-pollination with opportunities for cross-pollination, allowing them to enjoy the benefits of both strategies. Read More »

PHOTOPERIODISM and VERNALISATION

Photoperiodism: Key Details Aspect Details Definition The response of plants to periods of day and night, influencing flowering based on light and dark duration. Requirement for Flowering Some plants require specific light exposure to induce flowering and can measure the duration of light exposure. Categories of Plants Long Day Plants (SNP): Require light exposure exceeding

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Interaction :Competition for NEET

NCERT LINE BY LINE, Organism and Population / Prof. Siddharth Sanghvi

Competition and Its Ecological Outcomes (STR) Topic Description Examples Introduction to Competition Competition is an ecological interaction where individuals vie for the same limited resources like food, space, light, or mates. It occurs within the same species (intraspecific) or between species (interspecific), influencing survival, adaptation, and evolution. Barnacles, Paramecium species Intraspecific Competition Occurs among individuals

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Lungs – Pulmonary Pressures and Lung Functioning for Biology Olympiad

NCERT LINE BY LINE, Respiratory System, Zoology / Prof. Siddharth Sanghvi

Short Time Reading Aspect Description Atmospheric Pressure (Patm) The pressure exerted by air weight in the atmosphere, typically around 760 mmHg at sea level. It serves as a reference for measuring other pressures in the lungs. Intrapulmonary Pressure (Ppul) Also known as alveolar pressure, it’s the pressure within lung alveoli. This pressure fluctuates above and

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Plant Growth and Development-2-NCERT

NCERT LINE BY LINE, Plant Growth and Development / Prof. Siddharth Sanghvi

Section Details Growth Definition Growth is an irreversible, permanent increase in the size of an organ, its parts, or even an individual cell. This process involves metabolic activities (anabolism and catabolism) that utilize energy. For example, the expansion of a leaf is considered growth. However, the swelling of a piece of wood when placed in

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Plant Growth and Development-1-NCERT

NCERT LINE BY LINE, Plant Growth and Development, pre-class / Prof. Siddharth Sanghvi

Stage/Process Details 1. Development – Development is the sum of two processes: Growth and Differentiation. – Begins from the Zygote (fertilized egg). – Follows a precise and highly ordered succession of events. – Forms a complex body organization that produces roots, leaves, branches, flowers, fruits, and seeds. – Ends with death after maturation. 2. Cell

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FACTORS AFFECTING PHOTOSYNTHESIS – NCERT- NEET

Photosynthesis, pre-class / Prof. Siddharth Sanghvi

Factor Description Light Quality Photosynthesis primarily uses red (650-700 nm) and blue (400-500 nm) light wavelengths, affecting the efficiency of photosynthesis. Light Intensity The rate of CO2 fixation increases with light intensity up to a point. Beyond this point, chlorophyll can degrade, reducing photosynthesis. Saturation Point (Light Intensity) Shade-loving plants reach light saturation at around

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Quiz on Poaceae, Malvaceae , Asteraceae – NEW NEET Add on

Morphology of Flowering Plants, NCERT LINE BY LINE, pre-class / Prof. Siddharth Sanghvi

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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.

NCERT LINE BY LINE, Photosynthesis, pre-class / Prof. Siddharth Sanghvi

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

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. Read More »

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

Biodiversity, NCERT LINE BY LINE, pre-class / Prof. Siddharth Sanghvi

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-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 Read More »