Explanation

Lizards and snakes belong to the order Squamata, which is characterized by scaled reptiles.

This order includes both suborders: Lacertilia (lizards) and Serpentes (snakes).

Explanation

"Because" shows the reason birds can fly easily — they have wings.

It correctly connects the cause and effect in the sentence.

Explanation

o-Nitrophenol is more acidic due to the strong electron-withdrawing effect of the nitro group and possible intramolecular hydrogen bonding, which stabilizes the conjugate base.

Though both have -NO₂, the ortho position enhances acidity more than the para position.

Explanation

Sabin vaccine is the oral polio vaccine (OPV) developed by Albert Sabin.

It contains live attenuated poliovirus.

It helps in building immunity against poliomyelitis.

Explanation

Dinoflagellates do have cellulose plates, but not impregnated with calcium — that’s a feature of some other protists, not typical dinoflagellates.

They are mostly unicellular and can form blooms (like red tides).

Explanation

1,2-Butadiene contains cumulene structure with adjacent double bonds (C=C=C), leading to sp-hybridization at the central carbon.

The terminal carbon atoms are sp²-hybridized, while the central carbon is sp-hybridized.

Explanation

Hormones are chemical messengers that travel through the bloodstream to target organs and tissues.

This is a key function of the circulatory system, helping regulate various bodily functions.

Explanation

- f tan xdx = ln[cos x] + C.

This is a standard result from integral calculus involving trigonometric functions.

Explanation

A small standard deviation means the data is tightly clustered around the mean.

This results in a less spread out (narrower) normal distribution curve.

Explanation

A critical point occurs where the derivative of a function is zero or does not exist.

These points are important for finding local maxima, minima, or points of inflection.