plant nutrition

what is the formula of photosynthesis?

6 CO2 + 6 H2 O→ C6H12O6 + 6O2

How plants use carbohydrates?

Some is used to provide glucose , some are changed into sucrose, cellulose, produce nectar, make amino acids, make chlorophyll

How is the energy, glucose used by the plant to provide, is released?

By respiration

How is the sucrose carried from one part to another?

By phloem

Where is the epidermis found?

On the top of the leaf

Why is the epidermis tightly packed together?

To reduce the water vapor escaping from the leaf

Does epidermis contain chloroplasts?

No

Do epidermis photo synthesis?

No

What is cuctile?

Epidermis cells secrete a waxy substance which forms a thin transparent, waterproof called the cuctile.

Which layer is the palisade mesophyll?

The second layer

What are palisade mesophyll made up of?

Tall, narrow cells containing so much chloroplasts.

What is the main function of palisade mesophyll?

Photosynthesis

What is the third element that causes so much photosynthesis in palisade mesophyll?

Get plenty of sunlight

Which layer is the spongy mesophyll?

Third layer

Do spongy mesophyll contain chloroplast?

Contain but not much as palisade mesophyll

Are spongy mesophyll cells packed together?

Not so tightly packed, there air spaces in between the cells

What kind of a diffusion takes place at spongy mesophyll?

Air spaces allow CO2 and O2 to diffuse between the air •and the cells inside the leaf

How vapor moves in the spongy mesophyll?

Air spaces allow vapor to move from the surface of the cells to the outside of the leaf

Which layer is the lower epidermis?

Fourth layer

What are stomata?

Stomata are the opening in the surface of a leaf, surrounded by pairs of guard cells

What is the function of a guard cell?

Guard cells control whether the stomata are openor closed

What is the cell that is the only one containing chloroplast in lower epidermis?

Guard cells

What happens when light intensity is not a limiting factor?

At the fastest rate even if light becomes brighter, the plant can't photosynthesize any faster

What is the effect of carbon dioxide on rate of photosynthesis?

The more CO2 is given ,the faster is the photosynthesis

Can carbon dioxide be a non-limiting factor at rate of photosynthesis?

Yes

What are the effects of temperature on rate of photosynthesis?

Slow at low temperature

Works the fastest at optimum

Enzymes denature at extreme temperature

What is the effect of stomata on rate of photosynthesis?

Carbon dioxide diffuses into the leaf through stomata. If the stomata are closed, photosynthesis can't take place