FPSC MCQs

Most transpiration occurs through leaf stomata.
It helps pull water upward through xylem.

The anther is part of the stamen.
It contains pollen-producing structures.

The stigma is typically sticky or adapted to catch pollen.
It is part of the female reproductive structure.

Pollination occurs before fertilization in flowering plants.
It may be carried out by wind, insects, or other agents.

Germination begins when suitable moisture, oxygen, and temperature are available.
The embryo resumes growth.

The embryo requires energy for growth.
Respiration releases this energy from stored food.

Roots secure the plant in soil.
Root hairs increase absorption of water and minerals.

The heart contracts rhythmically to circulate blood.
It supplies tissues with oxygen and nutrients.

The heart has two atria and two ventricles.
The chambers separate oxygenated and deoxygenated blood.

Yeast ferments sugars and releases carbon dioxide.
Gas bubbles expand within the dough.

Organ systems coordinate complex tasks.
Examples include the digestive and circulatory systems.

Lactic-acid bacteria ferment milk sugar.
The acid causes proteins to thicken and gives yogurt its sour taste.