CSIR NET 2025 June Life & Earth Science (Shift 1) Question Paper Analysis OUT, Answer Key, Expected Cutoff

Council of Scientific and Industrial Research National Eligibility Test 2026 ( CSIR NET )

Shikha
Shikha Goyal
Assistant Manager
Updated on Jul 29, 2025 11:51 IST
The NTA conducted the CSIR NET 2025 June exam for Life & Earth Science in the first shift from 9 am to 12 pm. Candidates can check below the CSIR NET 2025 first shift, which is Life Science and Earth Science exam analysis, including the overall difficulty level, topics asked, expected cutoff, questions, etc., based on the students' feedback.

CSIR NET 2025 June Session Question Paper Analysis is available here for the exam conducted on July 28 in the first shift from 9 am to 12 noon for subjects Life and Earth Science. Scroll down to know about the overall difficulty level, topics asked, memory-based questions, answers, and expected cutoff for subjects Life Science and Earth Science.

CSIR NET 2025 June Life & Earth Science Analysis

CSIR NET 2025 June Life & Earth Science Analysis

CSIR NET 2025 Life & Earth Science Anaysis: The National Testing Agency (NTA) conducted the CSIR UGC NET 2025 exam for the June session on July 28 for subjects Life Science and Earth Science in the first shift. It was started at 9 am and concluded at 12 noon. Analysis is an important part of the examination as it provides information regarding the difficulty level of the examination, the question paper, the topics asked in the exam, etc. Candidates can predict, regarding the cutoff, whether it will rise or drop. The total number of questions asked in the Life Science exam is 145, and candidates need to attempt 75 questions where as in Earth Science, total questions asked are 150 and candidates required to attempt 75 questions. The CSIR NET 2025 Exam (Life Science & Earth Science) is divided into three parts, namely Part A, Part B, and Part C. Candidates can check below the detailed CSIR NET 2025 June Life Science & Earth Science exam analysis based on the student reactions, overall difficulty level, topics asked, memory-based questions and answers, etc.

Also Read: CSIR NET 2025 June Exam Analysis Live Updates

Table of contents
  • CSIR NET June Life Science Exam Analysis 2025: Student Reactions & Topics asked (Shift 1, July 28)
  • CSIR NET Section-Wise Analysis: June Life Science (Shift 1)
  • CSIR NET 2025 June Exam Students Reactions Video
  • CSIR NET Section-Wise Analysis: June Earth Science (Shift 1)
  • CSIR NET 2025 June Answer Key

CSIR NET June Life Science Exam Analysis 2025: Student Reactions & Topics asked (Shift 1, July 28) 

According to the students responses, the Life Science exam is Difficult in overall difficulty level. Students also felt that Part C of the Life Science exam was difficult as compared to earlier CSIR NET exam. Some also felt Part B a bit difficult.

Topics asked in Life Science are:

As per the students, topics asked in the Life Science exam are mentioned below:

  • GLUT 5
  • Tight junction
  • CdK-2
  • Ramachandran Plot
  • Non Photochemical Quenching
  • HPV (Cancer causing virus)
  • Leaf Development (Phytohormone)
  • TAL effector
  • Biosynthesis of phytohormones (question from Plant)
  • Asymmetric cell division in plant
  • K & r selected
  • Unbranched GAGs
  • Evolution (sequence oldest to latest)
  • Great Indian Bustard
  • Terpenes
  • Difference between bacteria and archaebacteria, etc.

Topics asked from Plant Physiology are:

  • Pathway & Hormones
  • Disease'2 degree metabolites
  • Cytokinin
  • Lignin
  • Asymmetrical cell (division in plants)
  • Leaf Development
  • Chronology in wheat
  • Photosystem I & II, etc.

CSIR NET Life Science 2025 Questions asked in Exam

  • Ecology-sequence of Proterozoic, Archeozoic, Phanerozoic Eras
  • Arrange the eras in order from youngest to oldest: Archaeozoic, Proterozoic, Phanerozoic
  • Arrange in order: DNA Gyrase, DNA Helicase, DNA Primase, DNA Pol 3, DNA Pol 1, DNA Ligase
  • What is the remainder when 2023^2024 + 2025^2024 is divided by 2024?
  • A marble block measuring 5m X 4mX 2m is cut into rectangular slabs of size 1m X 0.5m wit a thickness of 10 cm. If 10% of the marble is lost during grinding, how many slabs can be obtained?
  • Numerical Approximation: Cube of 0.99 is closed to 
  • A. 0,33
  • B. 0.99
  • C. 0.21
Q&A Icon
Commonly asked questions
Q:   What are CSIR NET subjects?
A: 

The CSIR NET exam consists of five subjects some of them are Maths, Physical Science, Chemical Science, etc. Part A in the exam is common for all candidates and Part B and C is subject-specific. Candidates need to select one subject and prepare well to clear the examination.

CSIR NET Section-Wise Analysis: June Life Science (Shift 1)

Candidates can check the CSIR NET 2025 June Life Science Analysis for Shift 1 in the table below based on the students' review.

Part Name

Total MCQs

Total MCQs to be Attempted

Difficulty Level

Good Attempts

Part A

20

15

Easy

9-12

Part B

50

35

Moderate to Difficult

18-22

Part C

75

25

Difficult 

20-24

Total

145

75

Difficult (Overall)

110+

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CSIR NET 2025 June Exam Students Reactions Video

Also Read: 

CSIR NET 2025 Syllabus

CSIR NET Section-Wise Analysis: June Earth Science (Shift 1)

Candidates can check the CSIR NET 2025 June Earth Science Analysis for Shift 1 in the table below based on the students' review.

Part Name

Total MCQs

Total MCQs to be Attempted

Difficulty Level

Good Attempts

Part A

20

15

to be updated here

to be updated here

Part B

50

35

to be updated here

to be updated here

Part C

80

25

to be updated here

to be updated here

Total

150

75

to be updated here

to be updated here

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CSIR NET 2025 June Answer Key

The National Testing Agency (NTA) will release the CSIR NET June Answer Key 2025 one week after the exam was concluded. Candidates will be able to raise objections against the CSIR UGC NET Provisional Answer Key by using their login credentials into the official website for a specific time period. The CSIR UGC NET 2025 June session exam is conducted on July 28. The Answer Key of CSIR NET will be available in the PDF format. After releasing the final answer key, CSIR NET Result & Cut-off will soon be published by NTA.

Read More:

CSIR NET 2025 Exam Pattern

CSIR NET 2025 Earth Science Syllabus

About the Author
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Shikha Goyal
Assistant Manager

Role: Editorial Domain

Education: Mass Com & Journalism, MSC Mathematics

Expertise: Sarkari Exam Expert

About

Shikha Goyal is a double post graduate with more than 12 years of experience in education domain, journal

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Answered a week ago

The CSIR NET 2026 Provisional Answer Key for the June session is expected to be released around 7 to 10 days after the exam. It will be released at csirnet.nta.nic.in. Candidates will also get time to check their responses and raise an objections if any. 

I

Ishita Kaur

Contributor-Level 6

Answered 4 weeks ago

CSIR NET Exam Pattern 2026 contains a Negative Marking in the exam. CSIR NET Negative Marking varies for different subjects. Candidates can check CSIR NET exam pattern for more detail: https://www.shiksha.com/sarkari-exams/articles/csir-net-2026-blogId-222056

N

Nitesh Pruthi

Contributor-Level 6

Answered 4 weeks ago

Candidates should follow a proper strategy and focused approach for the CSIR NET exam preparation. Some of the tips includes frequent revision, understand the pattern of an exam and syllabus, solve previous year question papers, practice mock test, etc.

G

Gunjan Majumder

Contributor-Level 6

Answered 4 weeks ago

The preparation for the CSIR NET exam depends upon the candidate to candidate. Generally, it is considered that with the right guidance and structured approach 6 to 12 months are enough for the CSIR NET preparation. Proper dedication and structured approach also plays a crucial role. 

S

Shikha Shukla

Contributor-Level 6

Answered 4 weeks ago

Generally, the good score in the CSIR NET exam is considered as 120+ out of 200 for JRF General category candidates and for Lectureship 90 to 110 range. This can vary year to year. 

J

Jasleen Jain

Contributor-Level 6

Answered 4 weeks ago

The CSIR NET exam is considered to be Moderate to Difficult in overall difficulty. Generally, Part C of the exam is considered to be difficult. Also, in subjects, Life Science is perceived to be tougher because of the depth of the syllabus and Chemical Science consists of the application-based quest

...Read more

M

Manisha Singh

Contributor-Level 6

Answered 4 weeks ago

Candidates can download the CSIR NET Syllabus by visiting the official website at csirnet.nta.nic.in or csirhrdg.res.in. Candidates can also visit out Shiksha page to download the syllabus PDF for the CSIR NET exam.

C

Chanchal Shekhar

Contributor-Level 6

Answered a month ago

Generally, the CSIR NET Chemical Science exam is considered to be moderate to difficult level of difficulty. It is crucial for the candidates to have clear understanding about the topics asked in the Earth Science exam.

I

Ishita Kaur

Contributor-Level 6

Answered a month ago

Candidates who are preparing for the CSIR NET Earth Science exam need to make proper strategy, understanding of the core concept is also important including in Geography, Physical Geography, Oceanography, etc. It is also crucial to analyze the syllabus thoroughly, solve previous year question papers

...Read more

S

Satyendra Garg

Contributor-Level 6

Answered a month ago

As per the cutoff trends and normalization process, candidates should aim to achieve at least 100 marks out of 200 to clear or meet the benchmark for the CSIR NET Life Science exam. For candidates who want to score for JRF then 110 or above is considered to be a good target. 

S

Shikha Goyal

Contributor-Level 10