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Plant Growth and Development

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Questions and Answers

What is the main function of lignin in plants?

Facilitate mineral absorption

Increase photosynthetic ability

Enable gaseous exchange

Provide a waterproof barrier (correct)

In which plant group is lignin NOT found?

Bryophytes

Lycophytes

Chlorophytes (correct)

Red algae

Which plant structures evolved twice independently according to the text?

Vascular tissue (correct)

Roots

Flowers

Leaves

What is the purpose of microphylls and megaphylls in plants?

Photosynthesis Signup and view all the answers

How do plants ensure the transportation of water and nutrients to the right place as they grow bigger?

Through the action of phloem and xylem Signup and view all the answers

What is the role of phloem in plants?

Transport organic nutrients throughout the plant Signup and view all the answers

What specialized structure allows for the movement of water in plants?

Stomata Signup and view all the answers

Why do bryophytes lack vascular tissues?

To allow for the movement of water and nutrients Signup and view all the answers

Which phase is dominant in bryophytes' life cycle?

Haploid phase Signup and view all the answers

What process characterizes the haplontic life cycle of bryophytes?

Fusion of gametes to form zygotes Signup and view all the answers

What is the primary function of rhizoids in bryophytes?

Anchoring the plant to the substrate Signup and view all the answers

What are guard cells responsible for in plants?

Regulating gas exchange through stomata Signup and view all the answers

What is the main function of phloem in a plant?

Conducting sugars through the plant body Signup and view all the answers

How do phloem and xylem differ in function?

Phloem moves sugars while xylem conducts water Signup and view all the answers

What is the role of phloem in a plant's growth?

Transport sugars to where they are needed Signup and view all the answers

Why are mycorrhizal fungi important for plants?

To extract nutrients from the environment Signup and view all the answers

How do root hairs contribute to a plant's growth?

Absorb nutrients and water from the soil Signup and view all the answers

What differentiates phloem from xylem in terms of their function?

Xylem moves water and minerals while phloem transports sugars Signup and view all the answers