Explanation

Bacteria are the most abundant living organisms on Earth, found in nearly every environment, from the deep ocean to the human body.

Their sheer numbers and ability to thrive in various conditions make them the most numerous form of life on the planet.

Explanation

A periscope is used to see objects above the eye level, commonly in submarines or behind obstacles.

It uses mirrors or prisms to reflect light down to the viewer’s eyes.

Explanation

Explanation

Nylon actually has excellent abrasion resistance, not poor.

It is also highly resilient, resistant to insects, fungi, and many chemicals.

Explanation

In a root system, the cortex lies between the epidermis (outer layer) and the vascular bundle (xylem and phloem).

It mainly functions in storage and transport of water and nutrients.

Explanation

The cells in the nasal chamber, specifically the olfactory cells, detect smell.

These sensory cells send signals to the brain to process different odors.

Explanation

During respiration, organisms break down glucose to release energy, and carbon dioxide is produced as a byproduct.

Unlike photosynthesis, where oxygen is produced, respiration involves the release of carbon dioxide.

Explanation

The crest is the part of a transverse wave where the particles of the medium are at the highest point, above the undisturbed position.

It is the peak or maximum displacement point in the wave.

Explanation

A stadiometer is specifically designed to measure a person's height accurately.

It typically consists of a vertical ruler with a movable headpiece for precise measurement.

Explanation

The pulse can be felt at arterial sites where blood is pumped through arteries, such as the wrist (radial artery) or neck (carotid artery).

Arterial sites provide a direct measurement of the heartbeat through the artery's rhythm.