What is photosynthesis in simple terms?

Photosynthesis is how plants make food.

How do plants absorb nutrients from soil?

Plants absorb nutrients through their roots.

What is the role of chlorophyll in plants?

Chlorophyll helps plants capture sunlight for food.

Why do some plants eat insects?

Some plants eat insects for nitrogen nutrients.

What is the difference between autotrophic and heterotrophic nutrition?

Autotrophic nutrition is self-made food; heterotrophic relies on others.

Nutrition in Plants Class 7 One Shot (Complete Chapter) | NCERT Class 7 Science Chapter 1 | BYJU'S

BYJU'S - Class 6, 7 & 8・4 minutes read

The Akash National Talent Hunt Exam offers students in grades 7-12 a chance to win scholarships and participate in educational sessions focused on plant nutrition, including key concepts like photosynthesis and types of nutrition. Additionally, students will benefit from interactive classes, doubt-clearing sessions, and resources from the Baiju's Mini Learning Program while being encouraged to join a community for updates.

Insights

The Akash National Talent Hunt Exam (ANTHE) offers students in grades 7-12 the opportunity to win significant rewards, including a full scholarship and a chance to visit NASA, emphasizing the importance of academic excellence and engagement in extracurricular activities.
The session on "Nutrition in Plants" not only covers essential concepts like photosynthesis and types of nutrition but also provides interactive learning through doubt-solving sessions and study strategies, illustrating a comprehensive approach to education that combines theoretical knowledge with practical application.

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Summary

00:00

Akash Talent Hunt Exam and Nutrition Class

The Akash National Talent Hunt Exam (ANTHE) is open for students in grades 7-12, with free registration available via a link in the description box.
Participants can win a 100% scholarship, All India Rank crash rewards, and a chance to go on a NASA trip.
The session focuses on a one-shot class for the chapter "Nutrition in Plants," part of a 45-day plan to prepare for midterms.
Students are encouraged to have notebooks, pens, and water ready for the class, which includes chapter revision and important exam-focused questions.
A Google form will be provided for students to submit doubts, which will be addressed in dedicated doubt-solving sessions.
The session will include strategy sessions to help students plan their study timetable and manage their time effectively.
The Baiju's Mini Learning Program offers a two-teacher advantage and in-depth concept understanding, available for free to the first 1,000 users weekly with a specific code.
Nutrition is defined as the mode of intake and utilization of food, which consists of various nutrients necessary for living organisms.
Two types of nutrition are discussed: autotrophic (organisms that make their own food) and heterotrophic (organisms that depend on others for food).
Photosynthesis is the process by which green plants prepare food using carbon dioxide and water in the presence of chlorophyll and sunlight, producing glucose and oxygen.

15:52

Plant Processes and Structures Explained

Chloroplasts are cell organelles containing chlorophyll, a pigment essential for photosynthesis, while chlorophyll is not an organelle but a pigment found within chloroplasts.
Glucose, a carbohydrate made of carbon, hydrogen, and oxygen, serves as an energy source for living organisms and is produced during photosynthesis.
Stomata are small openings between guard cells that allow gas exchange; guard cells are bean-shaped cells that regulate these openings.
Green stems may contain chlorophyll, but their photosynthetic efficiency varies due to differences in cell types compared to leaves.
Xylem transports water and minerals from roots to the upper plant, while phloem distributes food materials like glucose throughout the plant.
Boiling leaves in water removes chlorophyll, leading to a color change, followed by boiling in alcohol to further decolorize the leaves.
Plants can perform photosynthesis under artificial light, but sunlight is more effective due to its intensity and spectrum.
Excess glucose in plants is converted to starch for storage, making it more compact and easier to store, similar to folding a raincoat.
Nitrogen is crucial for plant growth, forming proteins and chlorophyll; it is often provided through fertilizers or organic matter like manure.
Insectivorous plants, like the Venus flytrap and pitcher plant, adapt to nitrogen-deficient soils by trapping and digesting insects for nitrogen.

30:23

Insectivorous Plants and Their Unique Nutrition

Insectivorous plants, found in nitrogen-deficient soil, utilize a mode of nutrition called insectivorous nutrition to compensate for their nitrogen deficiency.
These plants can perform photosynthesis, albeit partially, leading to their classification as partial autotrophs or partial heterotrophs due to their nitrogen needs.
Insectivorous plants evolved to trap insects for nitrogen, as they cannot thrive in nitrogen-sufficient soil, adapting over time to their nutrient-poor environments.
Nitrogen gas (N2) is inert and stable, making it unusable by plants directly; they require nitrogen in soluble forms like nitrites and nitrates for absorption.
Plants utilize stomata for gas exchange, allowing carbon dioxide in and oxygen out, but lack the ability to directly utilize gaseous nitrogen due to its chemical stability.
Heterotrophic nutrition involves organisms depending on others for food, with types including symbiosis, parasitism, and saprotrophy, each with distinct characteristics.
Symbiotic associations, like lichens, involve algae and fungi benefiting each other; algae perform photosynthesis while fungi provide shelter, exemplifying mutualism.
Rhizobium bacteria, found in root nodules of leguminous plants (e.g., peas, beans), fix nitrogen from the atmosphere into forms usable by plants, enriching the soil.
Parasitic nutrition, exemplified by cuscuta, involves one organism (the parasite) relying entirely on another (the host) for nutrients, often without killing the host.
Saprotrophic nutrition, seen in fungi, involves decomposing dead organic matter; fungi release digestive enzymes to break down nutrients, with examples including bread mold and mushrooms.

45:33

Soil Enrichment and Community Engagement Updates

Leguminous plants enrich soil with nitrogen, benefiting from it while cultivating; this process enhances soil fertility over time, supporting future plant growth and nutrient availability.
A host organism, like a human for leeches or a plant for parasites, provides nutrients gradually, allowing both host and parasite to coexist without immediate depletion of resources.
Important dates include August 7 for a significant announcement and August 14, which is highlighted as life-changing; joining the Telegram community is encouraged for updates and interactive content.