Explanation

The canal system is a characteristic of Porifera (sponges), used for water circulation and filtration.

Explanation

All of these electromagnetic waves (whether radio, visible, or gamma) travel at the same speed.

They all travel at the 'speed of light' through a vacuum, that is at 3 × 10 8 m s-1

Explanation

P and V graph at constant temperature, 

PV=nRT⟹ ideal gas equation.

PV=C 2 

xy=C 2  from hyperbola.

Explanation

Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, form part of the Hubble sequence.

Explanation

The medulla oblongata is a cone-shaped neuronal mass in the brain located in the brain stem, directly below the pons and anterior to the cerebellum.

Explanation

Benzene is an aromatic compound with a stable delocalized π-electron system.

It resists addition reactions (which would disrupt aromaticity) and typically undergoes substitution reactions instead.

Explanation

The decrease in response to repeated or continuous stimulation is called habituation. 

Habituation is a form of learning where an organism gradually reduces its response to a stimulus that is repeatedly presented

Explanation

 Pb₃O₄ is commonly known as red lead, and its chemical name is lead tetraoxide, as it contains both Pb(II) and Pb(IV) oxidation states.

Explanation

Albumin is an example of a simple protein. 

Simple proteins are composed solely of amino acids, and when hydrolyzed, they yield only amino acids.

Albumin, found in various bodily fluids like blood plasma and egg white, is a classic example of a simple protein. 

Explanation