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Anatomy and Physiology /Plant Growth and Germination

Plant Growth and Germination

Anatomy and Physiology10 CardsCreated 5 days ago

This deck covers key concepts in plant growth, including primary and secondary growth, stages of cell development, and the process of germination. It also explores seed structure, conditions necessary for germination, types of germination, and seed dormancy.

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What is primary growth in plants?

Primary growth is the increase in the length of the shoots and roots.

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Key Terms

Term

Definition

What is primary growth in plants?

Primary growth is the increase in the length of the shoots and roots.

What is secondary growth in plants?

Secondary growth is the increase in the width or girth of shoots and roots.

What are the three stages of plant growth?

The three stages are cell division, cell vacuolation (elongation), and cell specialization (differentiation).

What is the role of apical meristems?

Apical meristems are responsible for primary growth and are located at the tips of shoots and roots.

What is the function of the testa in seeds?

The testa is the outer layer of the seed that protects it against physical damage and infection.

What conditions are necessary for seed germination?

Oxygen, water (moisture), and a suitable temperature are necessary for seed germination.

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Plant Growth and Germination

Term	Definition
What is primary growth in plants?	Primary growth is the increase in the length of the shoots and roots.
What is secondary growth in plants?	Secondary growth is the increase in the width or girth of shoots and roots.
What are the three stages of plant growth?	The three stages are cell division, cell vacuolation (elongation), and cell specialization (differentiation).
What is the role of apical meristems?	Apical meristems are responsible for primary growth and are located at the tips of shoots and roots.
What is the function of the testa in seeds?	The testa is the outer layer of the seed that protects it against physical damage and infection.
What conditions are necessary for seed germination?	Oxygen, water (moisture), and a suitable temperature are necessary for seed germination.
What is epigeal germination?	Epigeal germination is when cotyledons are pushed above the ground by elongation of the hypocotyl.
What is hypogeal germination?	Hypogeal germination is when cotyledons remain underground due to elongation of the epicotyl.
What is seed dormancy?	Seed dormancy is a state where a seed carries out minimal metabolism and does not germinate.
How can seed dormancy be broken?	Dormancy can be broken by scarification, soaking in water, fire, exposure to certain environmental conditions, or chemical treatments.