Human and Plant Biology Basics

Study Notes

Plants

Require water and air (gases) for survival and growth.
Manufacture glucose during photosynthesis, which serves as a sugar and primary energy source for growth.
Stomata in leaves allow gases to enter the plant, facilitating photosynthesis.

Humans

Obtain energy by consuming food, which is chewed, swallowed, and digested.
Digestion converts food into nutrients that are absorbed into the bloodstream.
Air is inhaled through the nose and mouth, traveling to the lungs where oxygen enters the bloodstream.

Human Circulatory System

Transports oxygen and nutrients via blood to body cells.
Comprises the heart and blood vessels.

Heart

Functions as a pump, circulating blood to body cells and receiving it back.
Contains four chambers:
- Two atria (upper chambers)
- Two ventricles (lower chambers)

Blood Vessels

Arteries:
- Carry oxygen-rich and nutrient-rich blood from the heart to body cells.
Veins:
- Transport carbon dioxide-rich and nutrient-poor blood back to the heart, then out to lungs for oxygenation.
Blood Capillaries:
- Microscopic vessels connecting arteries and veins, exchanging nutrients and waste at the cellular level.

Blood

A fluid that circulates in one direction between arteries and veins, ensuring efficient transport of oxygen and nutrients.

Description

This quiz explores the essential biological processes of humans and plants, focusing on their need for water and air. It highlights how plants synthesize glucose through photosynthesis and how humans digest food for energy. Test your knowledge of these vital processes!