All flashcards
Flashcard 1: Which option is taken from soil: oxygen, carbon dioxide, or dissolved minerals?
Answer: Dissolved minerals. Minerals dissolve in soil water and enter through roots, not from air.
Flashcard 2: Which material do plants absorb from water that is needed for photosynthesis?
Answer: Water (H2O). Plants absorb H2O through roots; it's essential for photosynthesis reactions.
Flashcard 3: Which substances do plants mainly absorb from soil to support growth?
Answer: Minerals and nutrients (dissolved in water). Soil provides essential elements like nitrogen, phosphorus, and potassium for growth.
Flashcard 4: Which plant part absorbs water and dissolved minerals from the soil?
Answer: Roots. Root hairs increase surface area for efficient water and mineral absorption.
Flashcard 5: What are stomata, in one phrase, based on their role in gas exchange?
Answer: Tiny openings in leaves for gas exchange. Stomata open and close to control CO2 intake and O2 release.
Flashcard 6: Which option is taken from the air: carbon dioxide, minerals, or nitrogen-rich soil nutrients?
Answer: Carbon dioxide. CO2 enters through stomata; minerals and nitrogen come from soil.
Flashcard 7: Which option is taken from water: oxygen, water, or mineral particles in dry soil?
Answer: Water. Plants absorb H2O molecules; oxygen is released, not absorbed.
Flashcard 8: Identify the correct source: Plants get CO2 from the air, water from soil, or minerals from air?
Answer: CO2 from the air. CO2 enters through stomata; water and minerals come from soil through roots.
Flashcard 9: What is the main reason plants need minerals from soil (not from air)?
Answer: To build structures and support growth. Minerals form proteins, cell walls, and other essential plant structures.
Flashcard 10: Which material comes from soil but is carried into the plant dissolved in water?
Answer: Minerals (nutrients). Water acts as a solvent, carrying dissolved nutrients from soil into roots.
Flashcard 11: What is the name of the process where water vapor leaves a plant through stomata?
Answer: Transpiration. Water evaporates from leaves, creating suction that pulls water up from roots.
Flashcard 12: Which plant structure is the main site of gas exchange with the air?
Answer: Leaves (through stomata). Stomata in leaves allow CO2 in and O2 out during photosynthesis.
Flashcard 13: Choose the correct match: Air provides CO2; water provides H2O; soil provides what?
Answer: Minerals and nutrients. Each source provides different materials: air gives gases, soil gives minerals.
Flashcard 14: Which statement is correct: Plants get food from soil, or plants make food using air and water?
Answer: Plants make food using air and water. Photosynthesis combines CO2 and H2O to create glucose, not absorb food.
Flashcard 15: Identify the material NOT obtained from soil: water, minerals, or carbon dioxide.
Answer: Carbon dioxide. CO2 enters through leaf stomata from air, not absorbed by roots from soil.
Flashcard 16: Identify the material NOT obtained from air: oxygen, carbon dioxide, or dissolved minerals.
Answer: Dissolved minerals. Minerals come from soil through roots; gases exchange through leaf stomata.
Flashcard 17: What is the primary source of most of a plant’s mass: soil minerals or carbon dioxide from air?
Answer: Carbon dioxide from air. Most plant mass comes from carbon fixed during photosynthesis, not soil minerals.
Flashcard 18: Which option best describes soil’s role for plants: provides sunlight, provides gases, or provides nutrients?
Answer: Provides nutrients. Soil contains dissolved minerals essential for plant growth and metabolism.
Flashcard 19: Choose the correct category for sunlight: material from air/water, material from soil, or energy source.
Answer: Energy source (not a material). Sunlight provides energy for photosynthesis, not physical matter.
Flashcard 20: Identify the correct match: stomata—air exchange or stomata—mineral absorption?
Answer: Stomata—air exchange. Stomata are leaf pores for gas exchange, not mineral uptake.
Flashcard 21: What gas do plants take from the air to make food during photosynthesis?
Answer: Carbon dioxide (CO2). Plants use CO₂ from air to make glucose during photosynthesis.
Flashcard 22: What material do plant roots absorb from the ground that is needed for photosynthesis?
Answer: Water (H2O). Roots absorb water from soil, which travels up to leaves for photosynthesis.
Flashcard 23: Which part of a plant mainly takes in carbon dioxide from the air: roots or leaves?
Answer: Leaves. Leaves have stomata that allow CO₂ to enter from the air.
Flashcard 24: Which plant structure lets gases move in and out of leaves (carbon dioxide in, oxygen out)?
Answer: Stomata. These tiny pores open and close to control gas exchange.
Flashcard 25: Which part of a plant mainly absorbs water from the soil: leaves or roots?
Answer: Roots. Root hairs increase surface area for water absorption from soil.
Flashcard 26: What dissolved materials do plants absorb from soil along with water?
Answer: Minerals (nutrients). These dissolved substances provide essential elements for plant growth.
Flashcard 27: Which option is a mineral nutrient plants get from soil: nitrogen or carbon dioxide?
Answer: Nitrogen. Nitrogen is absorbed by roots as nitrates dissolved in soil water.
Flashcard 28: Which option is taken from air, not soil: carbon dioxide or potassium?
Answer: Carbon dioxide. CO₂ enters through leaf stomata, while potassium comes from soil.
Flashcard 29: Which option is taken from soil water, not air: magnesium or oxygen?
Answer: Magnesium. Magnesium is a mineral nutrient absorbed from soil, not air.
Flashcard 30: Identify the source of carbon dioxide for a plant: air, water, or soil.
Answer: Air. CO₂ molecules enter leaves through stomata from surrounding air.