PMS General Knowledge MCQs

Carbon dioxide is a major greenhouse gas released by fossil-fuel use.
It traps heat in Earth's climate system.

Vitamin D deficiency can impair bone mineralization in children.
The resulting condition is called rickets.

Recycling processes used materials into new products.
It can reduce waste and demand for raw resources.

Iron is a key component of hemoglobin.
Insufficient iron can lead to iron-deficiency anemia.

Erosion removes and transports soil or rock.
Water, wind, ice, and gravity can cause it.

Specialized cells in the pancreas produce insulin.
Insulin helps regulate blood glucose.

Force is measured in newtons in the SI system.
The unit is named after Isaac Newton.

Plants use carbon dioxide and water to make glucose during photosynthesis.
Oxygen is released as a by-product.

Chlorophyll absorbs light energy for photosynthesis.
It gives most plant leaves their green color.

Mitochondria produce much of the cell's usable energy as ATP.
They are therefore called the powerhouse of the cell.

Roots anchor the plant and absorb water and minerals.
Root hairs increase the absorbing surface.

Transpiration is the loss of water vapor through plant surfaces.
Most of it occurs through leaf stomata.