Ferns Flashcards

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1
Q

What is stomata?

A

Small adjustable pores located on the surface of leaves. They allow the exchange of CO2 and water between the leaf interior and the atmosphere.

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2
Q

What does pioneer species do?

A

They can form soil (decomposition) and prevent erosion (roots hold soil down)

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3
Q

What is carbon sink?

A

Years ago Ferns died and under conditions like heat, pressure and lack of oxygen formed coal beds. In this way greenhouse gasses are reduced

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4
Q

How is the opening and closing of a stomata regulated?

A

When the plant senses good conditions like bright light or high humidity, it’s stomata open. This happens when guard cells swell with water through the proses or osmosis.

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5
Q

What are the two types of vascular tissues ferns have?

A

Xylem and phloem

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6
Q

What is the xylem?

A

Is a vascular tissue and is composed of cells which are hollow and thick walled. They allow water and minerals through the plant

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7
Q

What is function of phloem?

A

Is a vascular tissue and Is a network of cells which transports solutions of nutrients and carbohydrates produced by photosynthesis

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8
Q

Ferns have underground cells called what?

A

Rhizomes, they anchor the plant to the ground and absorb water and minerals

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9
Q

Sporangia have a cell helmet which helps to release the spores, what is it called?

A

Annulus

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