Sample paper · NEET Preparation Botany
Botany · Sample Paper 3
NEET-UG pattern — 45 fresh MCQs on the full Class 11 + 12 Botany syllabus, 4 marks each.
45 questions · 180 marks · 45 minutes
General instructions
- This paper has 45 multiple-choice questions, each with one correct answer. All are compulsory.
- Section A — Q1 to Q24: Class 11 syllabus. Section B — Q25 to Q45: Class 12 syllabus.
- Each correct answer earns 4 marks. In the real NEET a wrong answer costs 1 mark; this practice paper does not deduct marks.
- Time: 45 minutes — the share of Botany in the 180-minute NEET paper.
Section A · Class 11 syllabus
Questions 1–24, 4 marks each.
- Question 14 marks
The father of taxonomy is
- A.Darwin
- B.Linnaeus
- C.Mendel
- D.Whittaker
- Question 24 marks
A list of plants of a region with their descriptions is a
- A.flora
- B.monograph
- C.manual
- D.catalogue
- Question 34 marks
Bacteriophages contain
- A.DNA as genetic material
- B.only RNA
- C.no nucleic acid
- D.both DNA and RNA always
- Question 44 marks
Lichens are a symbiotic association between
- A.algae and fungi
- B.bacteria and fungi
- C.algae and bacteria
- D.fungi and plant roots
- Question 54 marks
Mycoplasma lacks
- A.DNA
- B.a cell wall
- C.ribosomes
- D.cell membrane
- Question 64 marks
Spirogyra belongs to
- A.green algae
- B.brown algae
- C.red algae
- D.blue-green algae
- Question 74 marks
The protonema stage is found in
- A.liverworts
- B.mosses
- C.ferns
- D.gymnosperms
- Question 84 marks
Coralloid roots of Cycas are associated with
- A.N₂-fixing cyanobacteria
- B.fungi
- C.bacteria causing disease
- D.nematodes
- Question 94 marks
Twisted aestivation is found in
- A.pea
- B.cotton
- C.Calotropis
- D.Cassia
- Question 104 marks
Phyllode is a modification of
- A.stem
- B.petiole
- C.root
- D.flower
- Question 114 marks
The family Solanaceae includes
- A.pea and gram
- B.potato and tomato
- C.onion and garlic
- D.mustard and radish
- Question 124 marks
Which meristem is responsible for increase in girth?
- A.apical
- B.lateral
- C.intercalary
- D.primary
- Question 134 marks
Companion cells are associated with
- A.xylem vessels
- B.sieve tube elements
- C.tracheids
- D.sclerenchyma
- Question 144 marks
The cell theory was proposed by
- A.Schleiden and Schwann
- B.Watson and Crick
- C.Robert Hooke
- D.Virchow only
- Question 154 marks
Which organelle is involved in lipid synthesis?
- A.rough ER
- B.smooth ER
- C.lysosome
- D.ribosome
- Question 164 marks
Chiasmata are formed during
- A.leptotene
- B.zygotene
- C.diplotene
- D.diakinesis
- Question 174 marks
Cells that do not divide further exit the cycle and enter
- A.G₁
- B.G₀
- C.S
- D.G₂
- Question 184 marks
Which pigment is the reaction centre of PS I?
- A.P680
- B.P700
- C.chlorophyll b
- D.carotene
- Question 194 marks
The first stable product of the Calvin cycle is
- A.OAA
- B.3-PGA
- C.RuBP
- D.malic acid
- Question 204 marks
The chemiosmotic hypothesis explains
- A.ATP synthesis
- B.CO₂ fixation
- C.water absorption
- D.opening of stomata
- Question 214 marks
In alcoholic fermentation, pyruvic acid is converted to
- A.lactic acid
- B.ethanol and CO₂
- C.acetyl CoA
- D.citric acid
- Question 224 marks
The link reaction converts pyruvate to
- A.oxaloacetate
- B.acetyl CoA
- C.citrate
- D.glucose
- Question 234 marks
Richmond–Lang effect (delay of senescence) is due to
- A.auxin
- B.cytokinin
- C.ethylene
- D.ABA
- Question 244 marks
Vernalisation refers to
- A.promotion of flowering by low temperature
- B.effect of light on flowering
- C.seed dormancy
- D.fruit ripening
Section B · Class 12 syllabus
Questions 25–45, 4 marks each.
- Question 254 marks
Double fertilisation is characteristic of
- A.gymnosperms
- B.angiosperms
- C.bryophytes
- D.pteridophytes
- Question 264 marks
Pollen viability of rice and wheat lasts about
- A.30 minutes
- B.several months
- C.several years
- D.one week
- Question 274 marks
The scutellum is found in
- A.dicot seeds
- B.monocot seeds (grass family)
- C.gymnosperm seeds
- D.fern spores
- Question 284 marks
Linkage was first discovered in Drosophila by
- A.Mendel
- B.T.H. Morgan
- C.Sutton
- D.de Vries
- Question 294 marks
Skin colour in humans is an example of
- A.monogenic inheritance
- B.polygenic inheritance
- C.codominance
- D.sex-linked inheritance
- Question 304 marks
The chromosomal theory of inheritance was proposed by
- A.Sutton and Boveri
- B.Mendel
- C.Morgan
- D.Bateson
- Question 314 marks
The 'central dogma' states that information flows
- A.DNA → RNA → protein
- B.protein → RNA → DNA
- C.RNA → DNA → protein only
- D.protein → DNA
- Question 324 marks
In eukaryotes, the RNA polymerase that transcribes mRNA precursors (hnRNA) is
- A.RNA polymerase I
- B.RNA polymerase II
- C.RNA polymerase III
- D.DNA polymerase
- Question 334 marks
The lac operon is an example of
- A.positive regulation only
- B.an inducible system (negative regulation)
- C.constitutive genes
- D.a repressible system
- Question 344 marks
Griffith's experiment with Streptococcus pneumoniae demonstrated
- A.transformation
- B.transduction
- C.conjugation
- D.replication
- Question 354 marks
Which microbe is used to produce citric acid?
- A.Aspergillus niger
- B.Acetobacter aceti
- C.Clostridium butylicum
- D.Lactobacillus
- Question 364 marks
Flocs in secondary sewage treatment are
- A.masses of bacteria with fungal filaments
- B.sand particles
- C.chemicals
- D.algae only
- Question 374 marks
Baculoviruses are used as
- A.biofertilisers
- B.biocontrol agents against insects
- C.antibiotics
- D.vaccines
- Question 384 marks
The number of births per 1000 individuals per year is the
- A.mortality rate
- B.natality (birth rate)
- C.immigration
- D.carrying capacity
- Question 394 marks
Orchids on mango trees and barnacles on whales are examples of
- A.parasitism
- B.commensalism
- C.mutualism
- D.competition
- Question 404 marks
Mycorrhiza is an association between
- A.fungi and roots of higher plants
- B.algae and fungi
- C.bacteria and roots
- D.fungi and animals
- Question 414 marks
The biomass available for consumption by heterotrophs is
- A.gross primary productivity
- B.net primary productivity
- C.secondary productivity
- D.standing crop only
- Question 424 marks
Which ecosystem has the highest net primary productivity per unit area?
- A.desert
- B.tropical rainforest
- C.tundra
- D.open ocean
- Question 434 marks
The amount of living material present at a trophic level at a given time is
- A.standing crop
- B.productivity
- C.decomposition
- D.humus
- Question 444 marks
The Earth Summit (1992) on biodiversity was held in
- A.Rio de Janeiro
- B.Johannesburg
- C.Kyoto
- D.Paris
- Question 454 marks
Which of these is extinct due to over-exploitation?
- A.Steller's sea cow
- B.tiger
- C.Indian rhino
- D.lion
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