18 Questions
What raw materials do autotrophs need for building their body?
Water, nitrogen, phosphorus, iron, and magnesium
How do terrestrial plants acquire water for photosynthesis?
Plants take up water from the soil through their roots.
What form is nitrogen taken up by plants for synthesis of proteins?
Inorganic nitrates or nitrites, or as organic compounds prepared by bacteria from atmospheric nitrogen
How do autotrophs obtain other essential elements like phosphorus, iron, and magnesium?
Plants take up these elements from the soil.
Explain the role of nitrogen in the synthesis of compounds by autotrophs.
Nitrogen is essential for the synthesis of proteins and other compounds.
How do autotrophs adapt to their environment in terms of nutrition?
Each organism has a specific form of nutrition adapted to its environment.
What is the main process by which autotrophic organisms fulfill their carbon and energy requirements?
Photosynthesis
What are autotrophs and give an example of autotrophic organisms?
Autotrophs are organisms that can produce their own food using inorganic sources like carbon dioxide and water. Example: Green plants and some bacteria.
What are heterotrophic organisms and give an example of heterotrophs?
Heterotrophic organisms are organisms that cannot produce their own food and depend on other organisms for sustenance. Example: Animals and fungi.
What role do enzymes play in breaking down complex substances for organisms?
Enzymes act as bio-catalysts to break down complex substances into simpler ones that can be used for growth and maintenance.
How do autotrophs differ from heterotrophs in obtaining their food?
Autotrophs can produce their own food from inorganic sources, while heterotrophs need to consume other organisms or organic matter for food.
Explain the dependency of heterotrophs on autotrophs for their survival.
Heterotrophs depend directly or indirectly on autotrophs for the food they produce. Autotrophs provide the base of the food chain.
How does Amoeba take in food?
Amoeba takes in food using temporary finger-like extensions of the cell surface which fuse over the food particle forming a food-vacuole.
How does Paramoecium take in food?
In Paramoecium, food is taken in at a specific spot by the movement of cilia which cover the entire surface of the cell.
What differentiates the digestive system in various organisms?
The food and the way it is obtained differ, leading to different digestive system designs in various organisms.
What is the basic structure of the alimentary canal in Human Beings?
The alimentary canal in Human Beings is basically a long tube that extends from the mouth to the anus.
How do single-celled organisms like Amoeba and Paramoecium obtain nutrition?
Single-celled organisms like Amoeba and Paramoecium obtain nutrition through different methods such as surface intake and cilia movement.
What are some examples of organisms using parasitic nutritive strategy?
Some examples of organisms using parasitic nutritive strategy are cuscuta (amar-bel), ticks, lice, leeches, and tape-worms.
Explore activities comparing starch presence in leaves to design an experiment showing sunlight is vital for photosynthesis. Learn about the raw materials terrestrial plants need for growth and energy production.
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