Neet 2026 answer key with explanation| By Dr Sucil | drstudents.com #neet2026answerkey #drstudents

Added: 2026-05-11

[00:00:00]Hello everyone welcome to dear students.com today we know we going to discuss about uh solutions and answer key for NE 2026 biology so the first question the evil quartet of biodiversity loss includes which of the following so we we if you remember the evil quartet contains four things what are these habitat loss and fragmentation over exploitation alien species inversion co exchange extension. So air pollution does not come here. Habitat loss and fragmentation, overexloitation, alien species invasion and co extinction. So water pollution not here. Soil pollution not. So correct answer will be two.

[00:00:44]Which of the following is a site for active ribosomal synthesis? Active that is nucleolus 23 SR RN inside nucleololis. All these things are within the nucleus that is uh your nucleololis and match the list one and list two G1 yes G2 and M face.

[00:01:16]So G1 phase if you remember G1 phase cell is metabolically active and continuously grows but does not replicate its DNA. True. So this might be true. Sphase is the actual phase of uh so Sphase what happens in Sphase that is the synthesis of the DNA occurs as for S synthesis of the DNA DNA occur and amount of DNA doubles that is also correct. three and the G2 phase proteins are synthesized. White cell growth occurs. This is not in NCRT but proteins are synthesized. Okay. M phase actual cell division in the M phase that is the motic phase 2 3 4 and finally one. So that is your first option match the list one and list two. So first thing if you remember net primary productivity gross primary productivity minus respiratory loss. So B is one then should then answer should be two or three. Uh A is three because if you observe the productivity rate of biomass production correct only then C decides the answer.

[00:02:28]What is the gross primary productivity?

[00:02:31]So gross primary productivity is the rate of production by a plant that is in the plant when it takes the sunlight minus the respiratory loss without respiratory loss that is produced in the plant is the gross primary productivity.

[00:02:47]Secondary productivity is the after taking the net primary productivity by the organisms what is produced that is the secondary productivity that is two. So correct answer will be two.

[00:03:05]Which of the following statements are correct?

[00:03:08]So if you observe the Amazon rainforest being cut and cleared for cultivation of soya beans is an example of habitat loss.

[00:03:18]True statement correct statements. Stella seco and passenger pian became extin due to overexloitation by humans. That is also correct. The Nile perch introduced into lake Victoria in East Africa helped in population growth of shield fish not in the help in the growth that is wrong answer. Water hyent is an inversive species that is also correct. When a species become extinct the plant and animal species associated with it are not affected. That is wrong statement. So C and E are wrong. And also if you remember something we have missed here.

[00:04:02]Stella seco.

[00:04:07]Wait wait wait wait.

[00:04:09]Let me read it again.

[00:04:12]Everything is correct. So if you observe here when a species become extinct the plant and animal species associated with it is are not affected. That is wrong statement. they are also get affected.

[00:04:25]So option C is wrong answer because PL population growth of chichel fish helped in that is not the wrong uh that is not the right answer. It it it mean it causes a decline in the population.

[00:04:39]It is a predator. So what are the correct answers here? It is he the examiner is asking for correct answers that is A B and uh D. Okay.

[00:04:54]Now identify the correct statement about biomolelecules. This question is from chapter biomolelecules. Lipids are generally water soluble. That is incorrect statement. Lipids are water insoluble.

[00:05:06]When fats are solid at room temperature, you call it as a lipid.

[00:05:13]When they are liquid at room temperature, you call it as a oils.

[00:05:17]Proteins are polyacrate. Polysaccharides are long chains of sugars. Okay, correct answer and gine are substituted pyramidines wrong that is purines. Edin and gine are purines almost all engines are proteins correct answer exception is ribo. Okay almost correct. So choose the correct answer from the options given below. So correct answers are B C E B C E.

[00:05:46]How many ATP and NADPH are required to make one molecule of glucose through the Kelvin pathway? C6 H126 glucose. So 6 into 3 ATP 2 NADPH that comes out to be 18 ATP plus uh 12 NADPH.

[00:06:10]So this is also your stock question 18 ATP 12 NADPH. 188 ATP and 12 NADPH. So which of the following statements are not true regarding restriction endonucleuses? Very careful. You should be very careful. Not true means uh incorrect. Incorrect answer he is asking about incorrect.

[00:06:29]So if you observe the D statement they remove nucleotides only from the ends of the DNA fragment. Pause statement. It is endonucleazis.

[00:06:39]It is the function of exonucleus. So it is wrong answer. Again they cut DNA at the center of the palendroic sequence.

[00:06:47]Wrong answer. They cut at the palendromic sequence by recognizing the palendromic sequence but not at the center of the palendromic sequence. That is wrong answer. They recognize specific palendroic sequence base through they are the enms responsible for restricting the growth of bacterial phasages in E.

[00:07:05]That is also right answer. They are called molecular scissors because they cut the DNA molecules. That is also correct. So he's asking about not true that is incorrect answers. So C D C D are only incorrect answers. You should be very careful while uh uh answering these type of questions not correct answers.

[00:07:25]Then match list one and list two. So okay humication. What is meant by humification? Hey accumulation of dark colored amorphous collidal substance humification. Answer one D. D1 is a third option but you cannot place like that. See all the other options also decomposition. So breaking out of breaking down of complex organic matter into simplic simple inorganic substances. Correct answer three. So detritus detritus means the dead remains of plant and animals including fal matter. Detritus D for D. If you remember if you are studying NCERTT all these are NCERTT textbook lines.

[00:08:07]Mineralization release of inorganic nutrients that is nothing but minerals by the activity of microbes in the soil is the mineralization. 3 4 2 1 3 4 2 1 answer is three. Which of the following the ovules are not enclosed by an ovary wall remained exposed?

[00:08:25]So naked ovaries he's saying about naked ovaries. If you remember gymnosperms all gymnosperms are naked. Gymno means naked. Sperma means seed.

[00:08:46]So the answer is minus.

[00:08:51]So this is about placentation examples match list one and list two.

[00:08:56]So marginal placentation seen in So marginal placentation is seen in P and a exile and faby members fabis members axel placentation marginal placentation then parietal and basal placentations.

[00:09:18]Okay.

[00:09:19]Axel placentation is seen in example here lemon.

[00:09:26]Fatal placentation seen in mustard. Then basil placentation seen in mar gold that is 2 4 1 3 2 4 1 3 2 4 1 3. If you remember if you are sure about marginal placentation is Paka then you can actually mark the third option because A2 is only present in the third option. So like that also if you are sure about one answer you sometimes in the matchings and all you can mark the exact answer in angopones root air ar from which of the following regions of the root? This is also a pyq. Root a aranges from the region of maturation. That is fourth answer. Not from the elongation, not from the meristematic, not from the root cap. That is fourth option only. So which of the following is not a characteristic of plant cells in the phase of elongation. So cell enlargement large conspicuous nucleus inclines.

[00:10:30]So another question, which of the following statements are correct with resp molecular basis of inheritance?

[00:10:37]Question.

[00:10:39]A transcription unit in DNA is defined primarily by three regions. Promoter, structural gene, terminatoral group. The promoter is said to be located towards the five end of the structural gene.

[00:10:50]Correct. The promoter is a DNA sequence that promotes B that provides binding site for RNA polymerase group. The promoter defines the template coding strands. True. The terminator is located towards the third end of the coding strand and it defines the end of the process of transcription two. So all are correct statements. A B CDE E all are correct statements only. Alphah helix is found in which level of protein? Protein has four structures. Primary single chain arrangement. Okay.

[00:11:22]Secondary structure. Alphah helix and beta plated sheets are seen in secondary structure. That is answer. The following statements are correct regarding amino acids. Amino acids are substitute and methane is correct. Seren is an aromatic amino acid. False. Aromatic amino acids are tryptophan, thyrosin, phenyl, aline.

[00:11:41]Valin is a neutral amino acid. Correct.

[00:11:43]Lysine is an acidic amino acid. False.

[00:11:45]It is a basic amino acid. So correct are A and C.

[00:11:55]The main function of polyiforform cells in grasses is so to minimize the water loss during water stress. That is the right answer. Also known as motor cells are large thinwalled cells present in the upper epidermis of the grass leaves.

[00:12:09]Okay. Now going further find the incorrect statement about photosynthesis from the following. The water splitting complex uh it is associated with PS2 that is wrong answer.

[00:12:22]Then C3 plants exhibit crown's anatomy.

[00:12:24]False. Crown's anatomy is a feature of C4 plants.

[00:12:29]So it is also false. A and D are false.

[00:12:33]C4 plants use the C3 PL pathway of C CO2 fixation as the main biosynthetic that is also true. NCRT line in C4 plants photorespiration does not occur. True.

[00:12:44]ATP synthesis in chloroplast occurs.

[00:12:48]True. Chemosmos is true. So the so the incorrect answers are A and D conjective tissue. Tissue between the xyllem and phium is the conjective tissue. Casparian strips endodermal cells with superior deposition is the casparian strip strips. Subsidiary cells specialized cells in the vicinity of the guard cells. Starch sheet. Starch sheath. Endodermal cells rich in starch.

[00:13:23]So 3 4 2 1 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 Okay. Next genically modified organism.

[00:13:36]So biotechnology genetically modified organism BT cotton BT bring all these are genically modified. Thermosable DNA polymerase is obtained from dhrasacquatic as aquatic weed.

[00:13:54]Then TI plasmid seen in agroacterium tumififications. Then PBR vector PBR 322 is collide. So 2 314 2 314 2 314 right answer is three. Hetrofilus development in response to environment is an example of following phenomena. So that is a direct NCERTT line plasticity.

[00:14:24]Coming next question in resimo inflloresence flowers are born in an acropal succession. Flowers are born in an acropal succession. Correct answer.

[00:14:37]Growth is limited.

[00:14:40]The main axis continues to grow. Growth is limited. That is incorrect statement.

[00:14:44]Growth is unlimited.

[00:14:47]The main axis terminates with a flower.

[00:14:50]That is also a wrong answer. Flowers are solitary. Solitary means single. That is also a wrong answer. So the right answer in resoen flloresence flowers are born in an acropetal succession.

[00:15:05]Then uh glutamic acid. Which of the following disorder caused by substrate?

[00:15:09]Glutamic acid replaced by balance six position of classical example for cle cellia.

[00:15:17]Next uh incomplete dominance.

[00:15:21]Incomplete dominance. Inheritance of the flower color in antain.

[00:15:26]So co-ominance blood groups are example for co-ominance.

[00:15:33]Then uh pleotropy poly ketoonura disease.

[00:15:39]Okay. Polygenic inheritance. Human skin color. Polygenic means many genes are controlling a single character. Example human skin color. All these are NCRT lines. So 2 4 3 1 2 4 3 1.

[00:15:58]Next question.

[00:15:59]Arrange the following in correct developmental sequence related to microsporogenesis. Correct answer from the options. Okay. First sporogenous tissue.

[00:16:12]First is the sporogenous tissue followed by poland mother cells and uh each poland mother cell is nothing but a tetrad. So Poland microspor tetra breaks to gives rise to poland grains that is P D A C P D 115 the answer is three the following steps of DNA fingerprinting in a correct sequence.

[00:16:41]So this is about uh first thing is the DNA fingerprinting isolation of DNA and its digestion from restriction endonucle first step. Then uh if you observe this we should separate the DNA fragments by electrophorosis.

[00:16:57]Okay. Then transferring the separated DNA fragments to synthetic membranes.

[00:17:05]Then hybridization followed by hybridized segments by auto radiography. We have to detect that 1 2 3 4 5th.

[00:17:18]So A E C B D A E C B D. So first option exploring molecular genetic and species level diversity for products of economic importance is called biorrosspecting direct NCERTT line. Next, which of the following statements are true with reference to sex determination in honeybees?

[00:17:48]An offspring formed from the union of sperm and an egg develops as a female.

[00:17:57]Correct statement.

[00:18:01]Then uh males producing sperms by meiosis.

[00:18:06]That is also a correct state. Sorry, males produce sperms by meiosis.

[00:18:13]Wait a minute. That is false statement.

[00:18:20]A male has half the number of chromosomes than that of females. True.

[00:18:23]Females are deployed. Males are hoploid.

[00:18:26]Honeybees have a hlo deployed sex determination. True. An unfertilized eggs develops as a male by parthnogenesis.

[00:18:42]Just try to recall.

[00:18:44]Just try to recall that is also a correct statement.

[00:18:49]So D is a false statement.

[00:18:53]So what happens? Fertilized egg that is 2N becomes a female that means a queen or worker.

[00:19:05]Unfertilized eggs becomes a males that is drones by parroenesis. So only D answer is incorrect. A B C E are correct.

[00:19:17]He's asking about the true statement only. Next uh stock question. Identify the correct sequence of steps in PCR denaturing, enling, extinction of primer.

[00:19:28]Which of the following statements are correct with respect to DNA separation, isolation and visualization?

[00:19:37]So the cutting of DNA is done by molecular such as true. The DNA fragments separate according to their size in an aggros gel upon electrophorosis. That is also true.

[00:19:46]Separated DNA fragments can be seen without staining when exposure to uate.

[00:19:51]False. They have to be stained otherwise DNA is not visible without staining. The separated DNA fragments when stained with etheium bromide correct can be visible in visual light.

[00:20:04]So that is not visual visible light that is ultraviolet light. So this is also wrong statement. And he's asking about correct that is A and B only correct answers. Next the main criteria user for f kingdom classification of RH vitaker cell structure correct body organization or thalus organization correct presence of fleselum false reproduction true fogic relationship relationships true.

[00:20:31]So the other thing is the mode of nutrition but here it is not given C is wrong. So A B D E A B D E C should not be there and D is D is also should be there. So AD E first option which of the following is in triploid cell.

[00:20:50]So zygote is a deployed synergy is a hloid primary endosperm nucleus is a triploid. Direct answer central cell that means with the two polar nuclei contains N plus N that is also deployed.

[00:21:04]Which of the following statements are correct with reference to packing of DNA helix?

[00:21:12]So histones are organized in a to form a unit of eight molecules. Hyone octr histones are negatively charged basic proteins. False. Histones are positively charged. Positively charged. Positively charged. Histones are rich in basic amino acids. Lysin arginine. True. The positive charged DNA is wrapped around the histone oto form nucleus nucleosome. DNA is not positively charged. DNA is negatively charged. So it is false. The packaging of chromatin at higher levels requires an additional set of proteins called non-histone. True. So he's asking about correct statement. Correct statement.

[00:21:49]That means A C E A C E. Which of the following is an NC2 conservation?

[00:22:00]Sacred GS true wildlife safari parks false statement botanical gardens false seed bags all these are artificially can be prepared and stored sacred g is the answer in lacopron the jg in quotes for beta galacto cedis that is also direct uh answer from NCRT match the following growth regulator function or effect so first thing is 24D that is a hairpiece side synthetic oxen used to kill broadleaf weeds etc. Then uh G3 used in the brewing industries kinet cytokinines used for nutrient mobilization and ABA appsic acid is used for stomatal closure. So the correct answer is 3 1 4 2 3 1 4 2 Arrange the following step in somatic hybridization correct sequence in the somatic hybridization. First step is the isolation of single cells from different two different plants. So this is first followed by digestion of their cell walls followed by isolation of naked protolass.

[00:23:32]Then we have to fusion of the protolas after isolating them to form hybrid protolast.

[00:23:38]Then final statement is uh e. So D A B C E second option is correct.

[00:23:50]Respiratory quotient of the biomolelecule user for respiration. What is respiratory quotient? Carbon dioxide evolution by oxygen consumption. Here what is the carbon dioxide evolved? One or two. What is the oxygen consumed?

[00:24:04]145. If you observe the denominator is higher. So the answer should be less than one. This is wrong. This is wrong.

[00:24:11]So if you directly calculate uh it comes around 7 that nothing but fat. So between 0.5 and 95.

[00:24:21]Second answer is correct. Since the origin and diversification of life on earth there have been five episodes of mass extinction.

[00:24:32]How is the sixth extinction which is in progress different from previous? Okay.

[00:24:36]The following uh species extinction rates are far lower than far lower and wrong answer far higher nowadays very fast extinction. The present species extinction rates are 100 to,000 times okay than prehuman. Correct answer present net extinction extinction rate is zero that is false.

[00:24:55]Current species extinction rate is nearly 10 times not comparable not 10 times. So the correct answer is two.

[00:25:03]So match the following trin. Tripsin is an enzyme.

[00:25:08]Morphin. Morphin is an arcoid. Lectin concabalin A and collagen intercellular ground substance. 3 4 2 1 3 4 2 1.

[00:25:17]Direct answer. Which of the following statements are not true? That means incorrect about the universal rules of binom nominal nomomenclature.

[00:25:29]So both the words in a biolog biological name when handwritten are separated separately underlined or printed italics true specific epithet in the biological name starts with small letter true. The first word in the biological name represents specific epithet false while the second reverse zenus is followed by the species biological names in Latin true. So he's asking incorrect that is third statement. The enzyme required for caroxilation in Kelvin cycle is. So this is also a stock question very simple that is RUBP ribbulus bis phosphate caroxilus oxygenase Rubp rubiscope. Then the floral formula correct solen AC members if you remember in solen AC all five simply you can remember like that all five here also all five is given so okay we will study carefully here in solony AC what happens in solen it is a bisexual fl correct it is aomorphic or radially symmetry okay correct Correct. Kix five apples and gamosal is correct.

[00:26:46]Corola five five petals and gamo petal is correct. Okay. Five stammens. Okay.

[00:26:52]Correct. That is epipatitalis no fusion.

[00:26:54]Okay. Bicarpillary synarpus superior ovary that is also correct. So this is the correct answer. First option.

[00:27:04]Which of the following types of pollination brings genetically different type of pollen grains to the stigma?

[00:27:09]Genetically different that is xenogi.

[00:27:11]Genetically different means pollen from a different plant. Genetically different that is xenog.

[00:27:19]Question match list one list two process and location. Glycolysis takes place in the cytoplasm.

[00:27:26]Electron transport chain inner mitochondrial membrane. Option one.

[00:27:30]Accumulation of protons. Protons will be accumulated in inter membrane space and crep cycle. So mitochondrial matrix.