List of top Questions asked in NEET (UG)- 2026

Match List I with List II :

List I                       List II
A. Productivity              I. Gross primary productivity minus respiration losses
B. Net primary productivity  II. Rate of formation of new organic matter by consumers
C. Gross primary productivity III. Rate of biomass production
D. Secondary productivity    IV. Rate of production of organic matter during photosynthesis

Choose the correct answer from the options given below :

Which one of the following types of pollination brings genetically different types of pollen grains to the stigma?

Which one of the following is a triploid cell ?

Match List I with List II regarding cellular processes and their specific locations within the cell: \begin{center} \begin{tabular}{ll} List I (Process) & List II (Location)
A. Glycolysis & I. Inner mitochondrial membrane
B. ETS & II. Mitochondrial matrix
C. Accumulation of protons & III. Cytoplasm
D. Krebs' cycle & IV. Intermembrane space
\end{tabular} \end{center} Choose the correct answer from the options given below:

"The Evil Quartet" of biodiversity loss includes which of the following ?

Which of the following statements are correct regarding amino acids?
A. They are substituted methanes.
B. Serine is an aromatic amino acid.
C. Valine is a neutral amino acid.
D. Lysine is an acidic amino acid.
Choose the correct answer from the options given below:

Heterophyllous development in response to environment is an example of which of the following phenomena?

Which of the following statements are true with reference to the sex-determination in honeybees?
A. An offspring formed from the union of a sperm and an egg develops as a female (queen or worker).
B. An unfertilized egg develops as a male by parthenogenesis.
C. A male has half the number of chromosomes than that of a female.
D. Males produce sperms by meiosis.
E. Honeybees have a haplodiploid sex-determination system.

Identify the correct statements about biomolecules. A. Lipids are generally water soluble. B. Proteins are polypeptides. C. Polysaccharides are long chains of sugars. D. Adenine and guanine are substituted pyrimidines. E. Almost all enzymes are proteins. Choose the correct answer from the options given below :

Arrange the following in the correct developmental sequence related to microsporogenesis :
A. Microspore tetrads
B. Sporogenous tissue
C. Pollen grains
D. Pollen mother cells

In racemose inflorescence,

Which of the following statements are not true regarding restriction endonucleases?
A. They are called molecular scissors.
B. These are the enzymes responsible for restricting the growth of bacteriophages in {E. coli}.
C. They cut the DNA only at the centre of the palindromic sites.
D. They remove nucleotides only from the ends of DNA fragments.
E. They recognise specific palindromic base-pair sequences. Choose the answer from the options given below:

Which of the following is an {in situ} conservation method ?

Which of the following floral formula is the correct floral formula of Solanaceae family ?

How many ATP and $NADPH$ molecules are required to make one molecule of glucose through the Calvin pathway?

The enzyme required for carboxylation in the Calvin cycle is :

Match List I with List II :

List I (Growth Regulator)
A. 2,4-D
B. $GA_3$
C. Kinetin
D. ABA

List II (Function/Effect)
I. Brewing industry
II. Stimulation of stomatal closure
III. Herbicide
IV. Nutrient mobilisation

Choose the correct answer from the options given below :

Which one of the following is not a characteristic of plant cells in the phase of elongation ?

Match List I with List II :

List I                     List II
A. Conjunctive tissue      I. Specialised cells in the vicinity of guard cells
B. Casparian strips        II. Endodermal cells rich in starch
C. Subsidiary cells        III. Tissue between xylem and phloem
D. Starch sheath           IV. Endodermal cells with suberin deposition

Choose the correct answer from the options given below :

Arrange the following steps of somatic hybridisation in a correct sequence.
A. Digestion of cell walls.
B. Isolation of naked protoplasts.
C. Fusion of protoplasts to get hybrid protoplast.
D. Isolation of single cells from two different varieties of plants.
E. Growing of hybrid protoplast to form a new plant. Choose the correct answer from the options given below:

Find the incorrect statement(s) about photosynthesis from the following:
A. The water splitting complex is associated with PS I.
B. $C_4$ plants use the $C_3$ pathway of $CO_2$ fixation as the main biosynthetic pathway.
C. In $C_4$ plants, photorespiration does not occur.
D. $C_3$ plants exhibit 'Kranz' anatomy.
E. ATP synthesis in chloroplast occurs through chemiosmosis. Choose the answer from the options given below:

Which of the following statements are correct with reference to packaging of DNA helix?
A. Histones are organized to form a unit of eight molecules called histone octamer.
B. Histones are negatively charged basic proteins.
C. Histones are rich in the basic amino acid residues – lysine and arginine.
D. The positively charged DNA is wrapped around the histone octamer to form nucleosome.
E. The packaging of chromatin at higher levels requires an additional set of proteins called non-histone chromosomal proteins. Choose the correct answer from the options given below :

Arrange the following steps of DNA fingerprinting in a correct sequence.
A. Isolation of DNA and its digestion by restriction endonucleases.
B. Hybridisation using labelled VNTR probe.
C. Transferring of separated DNA fragments to synthetic membranes.
D. Detection of hybridised DNA fragments by autoradiography.
E. Separation of DNA fragments by electrophoresis. Choose the correct answer from the options given below:

$2(C_{51}H_{98}O_{6}) + 145\,O_{2} \longrightarrow 102\,CO_{2} + 98\,H_{2}O + \text{energy}$ The Respiratory Quotient (RQ) of a biomolecule used for respiration, as per the above equation, would be :