NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions


The oldest fossil belongs to which of the following group of plants/ animals?

  • Asteriodae

  • Rhodophyceae

  • Blue- green algae

  • Phaeophyceae


Blue- green algae

The oldest fossiles belongs to blue-green algae, was found in the sediments of South Africa about 3.2 billion years ago.


A function of lysosomes is

  • replication

  • hydrolysis

  • respiration

  • None of the above



Lysosomes is a simple spherical sac surrounded by a single membrane. They contain digestive or hydrolytic enzymes synthesised by RER.


Ringer's solution contains

  • Na+ + Cl- ions

  • Na+ + K+ ions

  • Na+ + K+ + Cl- ions

  • K+ + Cl- ions


Na+ + K+ ions

Ringer's solution was introduced by the physiologist Sidney Ringer in 1882 for the frog heart. The solution consists of sodium chloride, potassium chloride, sodium bicarbonate, and calcium chloride in the concentrations in which they occur in body fluids and that is isotonic to animal tissues.


Mitochondria and chloroplasts are similar because

  • both have 80S ribosomes

  • both have nuclei

  • both have single membrane envelope

  • both have DNA


both have DNA

Both are semi-autonomous organelles. Both of these possess circular DNA.


Which of the following animals has a tetramorphic colony?

  • Velella

  • Physalia

  • Obelia

  • Porpita



Physalia is tetramorphic in nature, it consists of

(i) a small dactylozooid with a long slender tantacle.

(ii) a gastrozooid with mouth but no tentacle.

(iii) a branched gonozooid, which bears both male and female gonophores.

(iv) a large dactylozooid with an enormous nematocyst bearing fishing tentacle.


Which of the following statements regarding universal rules of nomenclature is wrong?

  • The first word denoting the genus starts with a capital letter

  • The first word in a biological name represents the genus

  • Biological names are generally in Greek and written in italics

  • Both the words in a biological name, when hand-written, are separately underlined


Biological names are generally in Greek and written in italics

Binomial nomenclature is the system of providing organisms with appropriate and distinct names consisting of two words, first generic and second specific.

The first word is also called as genus and is written in capital form. The second or specific name represents the species and the first letter of species is written in small
form. The scientific name is printed in italics. It is underlined in hand written description.


Mehli's gland in tapeworm is associated with

  • respiration

  • reproduction

  • excretion

  • circulation



Mehli's gland in tapeworm is associated with reproduction. It is situated distally in the proglottid. The ootype is surround by numerous unicellular shell gland called Mehli's gland.


Select the correct set of animals of Class- Mammalia.

  • Lion, bat, whale, ostrich

  • Whale, bat, kangaroo, hippopotamus

  • Lion, hippopotamus, penguin, bat

  • Hippopotamus, penguin, whale, kangaroo


Whale, bat, kangaroo, hippopotamus

Whale, Bat, Kangaroo and Hippopotamus belongs to Class- Mammalia. Characteritics of the mammals in this class are-

  1. Have mammary glands.
  2. Have four chambered heart.
  3. Posses diaphragm.
  4. Have sebaceous (fat secreting glands), sudoriferus (sweat), and scent glands.
  5. Have heterodont dentation.


Select the type of enzyme involved in the following reaction

S - G + S' S + S' - G

  • Lyase

  • Transferase

  • Hydrolase

  • Dehydrogenase



Transferase is a class of enzymes that catalyse the transfer of a group of atoms from one molecules to another.

Lyase is an enzyme that catalyzes the breaking of various chemical bonds by means other than hydrolysis and oxidation, often forming a new double bond or a new ring structure.

Hydrolase is an enzyme that catalyses the hydrolysis of a particular substrate.

Dehydrogenase is an enzyme that catalyses the removal of hydrogen atoms from a particular molecule, especially in ETC reactions.


Match the column I with column II and choose the correct option.

Column I Column II
A. Goblet cells 1. Antibacterial agent
B. Lysozyme 2. Mucous
C. Saliva 3. HCl
D. Oxyntic cells 4. Sublingual gland

  • A - 3; B - 1; C - 4; D - 2

  • A - 2; B - 3; C - 1; D - 4

  • A - 1; B - 3; C - 4; D - 2

  • A - 2; B - 1; C - 4; D - 3


A - 2; B - 1; C - 4; D - 3

Column I Column II
A. Goblet cells 2. Mucous
B. Lysozyme 1. Antibacterial agent
C. Saliva 4. Sublingual gland
D. Oxyntic cells 3. HCl