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Questions and Answers
Which of the following is a characteristic of plants?
Which of the following is a characteristic of plants?
All plants are autotrophs and do not rely on other organisms for food.
All plants are autotrophs and do not rely on other organisms for food.
True
What process do plants use to absorb sunlight for photosynthesis?
What process do plants use to absorb sunlight for photosynthesis?
Photosynthesis
Plants mainly absorb _____ from the soil.
Plants mainly absorb _____ from the soil.
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Which features are used to classify the five major groups of plants?
Which features are used to classify the five major groups of plants?
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The gametophyte phase is the dominant phase in most land plants.
The gametophyte phase is the dominant phase in most land plants.
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The multicellular diploid phase of a plant is called the _____ phase.
The multicellular diploid phase of a plant is called the _____ phase.
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Match the following terms related to plant characteristics with their descriptions:
Match the following terms related to plant characteristics with their descriptions:
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Study Notes
Kingdom Plantae
- Plants are eukaryotes with cell walls containing cellulose.
- Plants are mostly autotrophs and use chlorophyll a and b for photosynthesis.
Characteristics of Plants
- Plants get what they need from the environment without moving.
- Sunlight: absorbed by chlorophyll in chloroplasts in leaves, arranged to maximize light absorption for photosynthesis.
- Gas exchange: involves taking in oxygen and carbon dioxide and releasing excess oxygen.
- Oxygen is needed for cellular respiration to release energy.
- Carbon dioxide is needed for photosynthesis.
- Water: absorbed primarily from the soil and transported internally, essential for photosynthesis.
- Minerals: absorbed from the soil along with water.
The History and Evolution of Plants
- Ancestors of land plants were water-dwelling organisms, similar to modern green algae.
- Land plant evolution favored traits that:
- Increased resistance to drying sunlight.
- Enhanced water conservation.
- Facilitated reproduction without water.
First Land Plants
- Early terrestrial plants were dependent on water and lacked leaves and roots.
Plant Classification
- Five major plant groups are classified based on four key features:
- Embryo formation
- Specialized water-conducting tissues
- Seeds
- Flowers
The Plant Life Cycle
- Land plant life cycles involve an alternation of generations.
- Two alternating phases:
- Diploid (2N) phase: Sporophyte (spore-producing plant).
- Haploid (N) phase: Gametophyte (gamete-producing plant).
Trends in Plant Evolution
- Evolutionary trends show a reduction in the gametophyte (2N) phase and an increase in the sporophyte (N) phase.
- Green algae: gametophyte is dominant, some have a sporophyte phase.
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Description
Explore the fascinating world of Kingdom Plantae in this quiz. Learn about the characteristics, evolution, and essential processes of plants, such as photosynthesis and gas exchange. Test your knowledge on how plants adapt to their environments and thrive on land.
