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Biology 2 - C04 - 05

🧬📗1️⃣ Module 4 - Plant Nutrition & Symbiosis - SET 5

QuestionAnswer
What is hydroponics? A method of growing plants without soil using nutrient-rich water.
Why is hydroponics efficient? It allows precise control of nutrient levels for optimal growth.
How do you test for essential nutrients in hydroponics? Omit one nutrient and observe plant growth.
What indicates a nutrient is essential? Abnormal growth when the nutrient is removed.
What are rhizobia? Nitrogen-fixing bacteria that form symbiotic relationships with legumes.
What do rhizobia provide to plants? Ammonia produced from atmospheric nitrogen.
What do plants provide to rhizobia? Carbohydrates and organic compounds for energy.
Where do rhizobia live in plants? Inside root nodules formed through plant–bacteria signaling.
What enzyme do rhizobia use for nitrogen fixation? Nitrogenase.
Why is the rhizobia relationship mutualistic? Both plant and bacteria benefit from nutrient exchange.
What are mycorrhizae? Symbiotic associations between fungi and plant roots.
How do mycorrhizae help plants? They increase nutrient and water absorption through fungal hyphae.
What do plants give to mycorrhizae? Carbohydrates produced through photosynthesis.
Which nutrient do mycorrhizae help absorb most efficiently? Phosphorus.
Where do mycorrhizae extend? Far beyond the root zone to access more soil nutrients.
Why are mycorrhizae important in ecosystems? They improve plant health and soil fertility.
What are carnivorous plants? Plants that trap and digest insects to supplement nutrients.
Why do carnivorous plants eat insects? They grow in nutrient-poor soils lacking nitrogen.
How do pitcher plants trap prey? Modified leaves form a pitfall trap with digestive fluids.
How does a Venus flytrap capture prey? Hinged leaves snap shut when trigger hairs are touched.
How do sundews trap insects? Sticky mucilage on glandular hairs ensnares prey.
Created by: francisslavin002
 

 



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