NEET 2015 Question Paper with Answers and Detailed Solutions | Code B, Code C & Code

INTRODUCTION

NEET Previous Year Questions are one of the most valuable resources for students preparing for the NEET examination. Solving Previous Year Questions helps students understand the examination pattern, important topics, concept application and the level of questions asked in Physics, Chemistry and Biology.

At Pentagon Institute, we believe that solving a Previous Year Question is only the first step. Students should also understand the correct answer, analyse the solution and identify the concept behind every question.

This NEET 2015 Previous Year Question collection is organised set-wise and includes questions, options, correct answers and detailed solutions from the available Code B, Code C and Code D papers.

NEET 2015 QUESTION PAPER – CODE B

QUESTIONS, ANSWERS AND DETAILED SOLUTIONS

The Code B paper includes questions from Biology, Chemistry and Physics. Students should attempt every question independently before checking the solution.

QUESTION 1

Read the different components from (a) to (d) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.

(a) Secondary cortex(b) Wood(c) Secondary phloem(d) Phellem

OPTIONS

1. (c), (d), (b), (a)2. (a), (b), (d), (c)3. (d), (a), (c), (b)4. (d), (c), (a), (b)

CORRECT ANSWER

Option 3 – (d), (a), (c), (b)

SOLUTION

The correct sequence from the outer side towards the inner side of a woody dicot stem is:

Phellem → Secondary cortex → Secondary phloem → Wood

Therefore, the correct arrangement is:

(d) → (a) → (c) → (b)

QUESTION 2

Chromatophores take part in:

OPTIONS

1. Photosynthesis2. Growth3. Movement4. Respiration

CORRECT ANSWER

Option 1 – Photosynthesis

SOLUTION

Chromatophores contain photosynthetic pigments and participate in photosynthesis.

Therefore, the correct answer is:

Photosynthesis

QUESTION 3

Which of the following joints allows no movement?

OPTIONS

1. Fibrous joint2. Cartilaginous joint3. Synovial joint4. Ball and socket joint

CORRECT ANSWER

Option 1 – Fibrous joint

SOLUTION

Fibrous joints connect bones through fibrous connective tissue and generally allow no movement.

Therefore, the correct answer is:

Fibrous joint

QUESTION 4

The wheat grain has an embryo with one large, shield-shaped cotyledon known as:

OPTIONS

1. Epiblast2. Coleorhiza3. Scutellum4. Coleoptile

CORRECT ANSWER

Option 3 – Scutellum

SOLUTION

Wheat is a monocotyledonous plant. Its embryo contains a single cotyledon called the scutellum.

Therefore, the correct answer is:

Scutellum

QUESTION 5

A jawless fish that lays eggs in fresh water and whose ammocoetes larva returns to the ocean after metamorphosis is:

OPTIONS

1. Eptatretus2. Myxine3. Neomyxine4. Petromyzon

CORRECT ANSWER

Option 4 – Petromyzon

SOLUTION

Petromyzon, commonly known as lamprey, is a jawless fish that migrates to fresh water for reproduction.

Its larval form is known as the ammocoetes larva. After metamorphosis, it returns to the ocean.

Therefore, the correct answer is:

Petromyzon

QUESTION 6

Industrial melanism is an example of:

OPTIONS

1. Neo-Darwinism2. Natural selection3. Mutation4. Neo-Lamarckism

CORRECT ANSWER

Option 2 – Natural selection

SOLUTION

Industrial melanism demonstrates how environmental conditions can favour one variation of an organism over another.

This is a classic example of:

Natural selection

QUESTION 7

Cell wall is absent in:

OPTIONS

1. Aspergillus2. Funaria3. Mycoplasma4. Nostoc

CORRECT ANSWER

Option 3 – Mycoplasma

SOLUTION

Mycoplasma is a prokaryotic organism that does not possess a cell wall.

Therefore, the correct answer is:

Mycoplasma

QUESTION 8

A colour blind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their grandson being colour blind?

OPTIONS

1. 0.52. 13. Nil4. 0.25

CORRECT ANSWER

Option 1 – 0.5

SOLUTION

Colour blindness is an X-linked recessive trait.

According to the source solution, the probability of the grandson being colour blind is:

0.5

QUESTION 9

Flowers are unisexual in:

OPTIONS

1. Pea2. Cucumber3. China rose4. Onion

CORRECT ANSWER

Option 2 – Cucumber

SOLUTION

Cucumber produces unisexual flowers.

Therefore, the correct answer is:

Cucumber

NEET 2015 QUESTION PAPER – CODE C

QUESTIONS, ANSWERS AND DETAILED SOLUTIONS

QUESTION 1

An electron moves along a straight-line path near a coil. What happens to the induced current as the electron passes the coil?

OPTIONS

1. The current reverses direction as the electron passes the coil2. No current is induced3. Current flows in one fixed direction4. Current remains constant

CORRECT ANSWER

Option 1 – The current reverses direction as the electron passes the coil

SOLUTION

When the electron approaches the coil, the magnetic flux through the coil changes in one direction.

After the electron passes the coil and moves away, the direction of change in magnetic flux reverses.

According to Faraday's law and Lenz's law, the induced current therefore reverses direction.

QUESTION 2

Water rises to a height h in a capillary tube. If the length of the capillary tube above the water surface is made less than h, then:

OPTIONS

1. Water rises a little below the top and stays there2. Water does not rise3. Water rises to the tip and overflows like a fountain4. Water rises to the top and stays there without overflowing

CORRECT ANSWER

Option 4 – Water rises to the top and stays there without overflowing

SOLUTION

If the capillary tube is shorter than the natural height of capillary rise, water rises up to the top.

The curvature of the liquid surface changes and water does not overflow like a fountain.

Therefore, the correct answer is:

Water rises to the top and stays there without overflowing

QUESTION 3

Filiform apparatus is a characteristic feature of:

OPTIONS

1. Aleurone cell2. Synergids3. Generative cell4. Nucellar embryo

CORRECT ANSWER

Option 2 – Synergids

SOLUTION

The filiform apparatus consists of finger-like projections present at the micropylar end of synergid cells.

It helps in guiding the pollen tube towards the embryo sac.

Therefore, the correct answer is:

Synergids

QUESTION 4

Satellite DNA is important because it:

OPTIONS

1. Does not code for proteins and is the same in all members of a population2. Codes for enzymes needed for DNA replication3. Codes for proteins needed in the cell cycle4. Shows a high degree of polymorphism in a population

CORRECT ANSWER

Option 4 – Shows a high degree of polymorphism

SOLUTION

Satellite DNA contains repetitive sequences and can show variation among individuals.

Its high degree of polymorphism makes it useful for identification and DNA fingerprinting.

QUESTION 5

The wheat grain has an embryo with one large, shield-shaped cotyledon known as:

OPTIONS

1. Scutellum2. Coleoptile3. Epiblast4. Coleorhiza

CORRECT ANSWER

Option 1 – Scutellum

SOLUTION

The single large cotyledon of the wheat embryo is called the:

Scutellum

QUESTION 6

A circuit contains an ammeter, a 30 V battery and a 40.8 Ω resistance connected in series. The ammeter has a coil resistance of 480 Ω and a shunt resistance of 20 Ω. What is the reading of the ammeter?

OPTIONS

1. 2 A2. 1 A3. 0.5 A4. 0.25 A

CORRECT ANSWER

Option 3 – 0.5 A

SOLUTION

The effective resistance of the ammeter is:

R = (480 × 20) / (480 + 20)

R = 19.2 Ω

Total resistance of the circuit:

R = 40.8 + 19.2

R = 60 Ω

Using Ohm's law:

I = V/R

I = 30/60

I = 0.5 A

Therefore, the correct answer is:

0.5 A

NEET 2015 QUESTION PAPER – CODE D

QUESTIONS, ANSWERS AND DETAILED SOLUTIONS

QUESTION 1

In his classic experiments on pea plants, Mendel did not use:

OPTIONS

1. Pod length2. Seed shape3. Flower position4. Seed colour

CORRECT ANSWER

Option 1 – Pod length

SOLUTION

Mendel studied seven pairs of contrasting characters in pea plants.

Pod length was not one of the characters selected by Mendel.

QUESTION 2

Which one of the following is not applicable to RNA?

OPTIONS

1. 5′ phosphoryl and 3′ hydroxyl ends2. Heterocyclic nitrogenous bases3. Chargaff's rule4. Complementary base pairing

CORRECT ANSWER

Option 3 – Chargaff's rule

SOLUTION

According to the provided source solution, Chargaff's rule is associated with DNA and is not applicable to RNA.

QUESTION 3

Male gametophyte in angiosperms produces:

OPTIONS

1. Single sperm and a vegetative cell2. Single sperm and two vegetative cells3. Three sperms4. Two sperms and a vegetative cell

CORRECT ANSWER

Option 4 – Two sperms and a vegetative cell

SOLUTION

The generative cell divides to produce two male gametes.

The vegetative cell is associated with pollen tube formation.

Therefore, the male gametophyte contains:

Two sperms and a vegetative cell

QUESTION 4

Which of the following are not membrane-bound?

OPTIONS

1. Ribosomes2. Lysosomes3. Mesosomes4. Vacuoles

CORRECT ANSWER

Option 1 – Ribosomes

SOLUTION

Ribosomes are composed of RNA and proteins.

They are not surrounded by a membrane.

QUESTION 5

The chitinous exoskeleton of arthropods is formed by the polymerisation of:

OPTIONS

1. D-glucosamine2. N-acetyl glucosamine3. Lipoglycans4. Keratin sulphate and chondroitin sulphate

CORRECT ANSWER

Option 2 – N-acetyl glucosamine

SOLUTION

Chitin is a polysaccharide made up of repeating units of:

N-acetyl glucosamine

QUESTION 6

Coconut water from a tender coconut is:

OPTIONS

1. Free nuclear endosperm2. Innermost layers of the seed coat3. Degenerated nucellus4. Immature embryo

CORRECT ANSWER

Option 1 – Free nuclear endosperm

SOLUTION

Coconut water represents:

Free nuclear endosperm

QUESTION 7

The cutting of DNA at specific locations became possible with the discovery of:

OPTIONS

1. Probes2. Selectable markers3. Ligases4. Restriction enzymes

CORRECT ANSWER

Option 4 – Restriction enzymes

SOLUTION

Restriction enzymes recognise specific sequences in DNA and cut DNA at those locations.

They are commonly referred to as molecular scissors.

QUESTION 8

Which of the following structures is not found in a prokaryotic cell?

OPTIONS

1. Ribosome2. Mesosome3. Plasma membrane4. Nuclear envelope

CORRECT ANSWER

Option 4 – Nuclear envelope

SOLUTION

Prokaryotic cells do not possess a true membrane-bound nucleus.

Therefore, the nuclear envelope is absent.

QUESTION 9

Arrange the following events of meiosis in the correct sequence.

(a) Crossing over(b) Synapsis(c) Terminalisation of chiasmata(d) Disappearance of nucleolus

OPTIONS

1. (b), (a), (c), (d)2. (a), (b), (c), (d)3. (b), (c), (d), (a)4. (b), (a), (d), (c)

CORRECT ANSWER

Option 1 – (b), (a), (c), (d)

SOLUTION

The sequence is:

Synapsis → Crossing over → Terminalisation of chiasmata → Disappearance of nucleolus

QUESTION 10

A column of water within xylem vessels of tall trees does not break under its weight because of:

OPTIONS

1. Tensile strength of water2. Lignification of xylem vessels3. Positive root pressure4. Dissolved sugars in water

CORRECT ANSWER

Option 1 – Tensile strength of water

SOLUTION

Water molecules show strong cohesive forces.

This gives water high tensile strength and helps maintain an unbroken water column inside the xylem.

QUESTION 11

The imperfect fungi that are decomposers of litter and help in mineral cycling belong to:

OPTIONS

1. Basidiomycetes2. Phycomycetes3. Ascomycetes4. Deuteromycetes

CORRECT ANSWER

Option 4 – Deuteromycetes

SOLUTION

Deuteromycetes are commonly known as imperfect fungi.

Many members act as decomposers and contribute to mineral cycling.

QUESTION 12

The structures that help some bacteria attach to rocks and host tissues are:

OPTIONS

1. Fimbriae2. Mesosomes3. Holdfast4. Rhizoids

CORRECT ANSWER

Option 1 – Fimbriae

SOLUTION

Fimbriae are small surface structures that help bacteria attach to surfaces and host tissues.

QUESTION 13

The DNA molecule to which the gene of interest is integrated for cloning is called:

OPTIONS

1. Vector2. Template3. Carrier4. Transformer

CORRECT ANSWER

Option 1 – Vector

SOLUTION

A vector is a DNA molecule used to carry a gene of interest into a host cell for cloning or genetic engineering.

WHY PRACTISE NEET PREVIOUS YEAR QUESTIONS?

Solving NEET PYQs helps students:

• Understand the pattern of questions

• Identify important concepts

• Improve conceptual understanding

• Practise application-based questions

• Improve speed and accuracy

• Identify weak chapters

• Reduce repeated mistakes

• Develop confidence for the examination

HOW TO USE NEET PYQs EFFECTIVELY

ATTEMPT FIRST

Try to solve every question before checking the answer.

CHECK THE ANSWER

Compare your selected answer with the correct answer.

STUDY THE SOLUTION

Understand why the answer is correct.

ANALYSE YOUR MISTAKE

Identify whether the mistake was caused by:

• Conceptual weakness

• Formula error

• Calculation error

• Careless mistake

• Misinterpretation of the question

REVISE

Study the concept again.

REATTEMPT

Solve similar questions after revision.

THE PENTAGON INSTITUTE PYQ LEARNING METHOD

LEARN THE CONCEPT

↓

PRACTISE QUESTIONS

↓

SOLVE PREVIOUS YEAR QUESTIONS

↓

CHECK THE ANSWER

↓

UNDERSTAND THE SOLUTION

↓

ANALYSE MISTAKES

↓

REVISE WEAK TOPICS

↓

PRACTISE AGAIN

FINAL THOUGHTS

Previous Year Questions are not useful only for checking your score.

Every question is an opportunity to understand a concept, improve problem-solving ability and identify areas that require revision.

Students who analyse their mistakes carefully can improve much faster than students who simply check the correct answer and move on.

At Pentagon Institute, we believe in focused learning, smart practice and continuous improvement.

PENTAGON INSTITUTE

Focused Learning • Smart Practice • Continuous Improvement