STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
ANATOMY OF FLOWERING PLANTS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Alternate rings of heart and early wood
|
|
|
Alternate rings of sapwood and heart wood
|
|
|
Alternate rings of early and late wood
|
|
|
Alternate rings of porous and non-porous wood
|
Detailed explanation-1: -So, the correct answer is ‘Autumn and spring wood’
Detailed explanation-2: -What is an annular ring? An annular ring is the area of copper pad around a drilled and finished hole. The finished hole we are talking about here is nothing but a copper-plated via. All around this via there should be enough copper to form a solid connection between the copper traces and the via in a multi-layer PCB.
Detailed explanation-3: -Annual growth rings are the circular rings found on the end of a log or tree stump. Each set of rings signifies one year of growth. Each year of growth has two distinct growing seasons: spring and summer. In the spring, trees take advantage of all the moisture in the soil and conduct large capacities of sap.
Detailed explanation-4: -Annual ring is a ring of wood found in the cross section of the stem or root of a temperate plant. It represents one year’s growth of a plant.