No2 Flashcards

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1
Q

Parenchyma?

A

Thin walled cells making up bulk of plant

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2
Q

Collenchyma?

A

Irregular secondary thickening of cell wall, provide support in new shoots

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3
Q

Sclerenchyma?

A

Support cells with substantial secondary thickening with lignin, dead at maturity ie xylem

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4
Q

Animal cell vs plant cell

A

Animal is smaller, no cell wall, many vacuoles
Plant is larger, cell wall, one vacuoles, chloroplast

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5
Q

Pericycle?

A

Thin layer of undifferentiated cells, meristem tissue, source of new lateral roots.

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6
Q

Cotyledon?

A

Seed leaf, allows photosynthesis to start

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7
Q

Stolon?

A

Stem that grows horizontally above surface

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8
Q

Rhizome?

A

Underground stem that produce roots on the lower surface and extend leaves above ground.

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9
Q

Bulb?

A

Layers of fleshy scales that overlap. Underground stem, food storage.

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10
Q

Root nodules?

A

Contain bacteria that are capable of fixing nitrogen from the air.
Eg alnus glutinosa

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11
Q

Lignotubers?

A

Woody swelling of root crown to protect against forest fires.
Eg eucalyptus

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12
Q

Autotroph?

A

An organism that makes its own food.

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13
Q

Limiting factors for photosynthesis?

A

Light, water, co2, photosynthetic pigments, temperature

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14
Q

Parts of a chloroplast?

A

Outer and inner membrane.
Stroma
Thylakoids
Stack of thylakoids- granum

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15
Q

Photosynthesis equation?

A

Co2 + water = glucose + oxygen

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16
Q

Carotenoids?

A

Accessory pigments, red orange and yellow.

17
Q

3 stages of photosynthesis?

A

Light harvesting
Electron transfer (produces atp)
Calvin cycle (light independent)

18
Q

Calvin cycle?

A

Light independent, occurs in stroma. Uses atp and nadph and hydrogen and co2 to make carbohydrates.

19
Q

Electron transfer?

A

ADP is made into ATP and NADPH