The role of the pacemaker or sinoatrial node (SAN) is to C) To originate excitation in myogenic muscle.
A part of all organic compounds is cells.
Since there are no choices to choose from, I'll just site all the structures of the leaf with its role then.
A Leaf has the following structures:
Cuticle
Upper epidermis layer
Palisade layer
Xylem
Phloem
Spongy mesophyll layer
Air space
Lower epidermis layer
Stomata
<span>Guard cells</span>
C because the plants in the fuller is now
Answer:
Development of early maturing crop.
Development of high yielding crop.
Makes the plant to assume the desired shape and size.
Can obtain two or more orange varieties on the same root stock.
Ensures uniformity of genetic/clonal characteristics.
Development of drought resistant crop
Explanation:
Hope This Helps
Have A Great Day
~Zero~
