Green Plants as Organisms Quiz
Test your knowledge of Green Plants as Organisms as part of GCSE Biology with this quiz.
This quiz consists of 15 questions, including multiple-choice and short-answer questions on the topic of Green Plants as Organisms for GCSE Biology.
For multiple-choice questions, choose the correct answer. Scroll down to begin the quiz.
Questions
What is the primary function of decomposers in an ecosystem?
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Which of the following is a product of photosynthesis?
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What is the role of auxins in plants?
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Which of the following is NOT a part of the plant transport system?
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Which process in plants involves the loss of water vapour through small pores on leaves?
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What is the equation for photosynthesis?
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
What is the role of decomposers in the nitrogen cycle?
Decomposers break down dead plant and animal matter, releasing nitrogen compounds back into the soil, which can be used by plants.
How do plants transport water from the roots to the leaves?
Water is transported through the xylem vessels by capillary action, cohesion, and transpiration pull.
What is the function of the phloem in plants?
The phloem transports the products of photosynthesis, mainly sugars, from the leaves to other parts of the plant.
Why do plants need sunlight for photosynthesis?
Sunlight provides the energy required to convert carbon dioxide and water into glucose and oxygen during photosynthesis.
What is the role of stomata in plant water relations?
Stomata are small pores on the leaves that allow gas exchange (carbon dioxide in, oxygen out) and regulate water loss through transpiration.
What is the effect of high concentrations of auxins on plant growth?
High concentrations of auxins promote elongation of cells, which helps the plant grow towards light (phototropism) or gravity (gravitropism).
What happens during the process of transpiration?
During transpiration, water is lost as vapour from the plant through the stomata, helping to draw more water up from the roots to replace it.
Explain why plants need to absorb water from the soil.
Plants need water for photosynthesis, to maintain cell turgidity, and to transport nutrients through the plant.
How do plant hormones like gibberellins and cytokinins influence plant growth?
Gibberellins promote stem elongation, seed germination, and flowering, while cytokinins promote cell division and delay ageing in plants.
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