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100+ Free Tamil Nadu HSE First Year Biology Practice Questions

Tamil Nadu Higher Secondary First Year (HSE +1 / Class 11) Biology under the Directorate of Government Examinations (DGE), Tamil Nadu practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: Tamil Nadu HSE First Year Biology Exam

10:00–1:15

Official March 2026 HSE theory sitting window including reading/verification time (dge.tn.gov.in timetable)

DGE TN HSE March 2026 public examination timetable

35/100

Minimum pass mark per subject under the HSE new pattern, subject to theory/practical floor rules

DGE HSE_E.pdf scheme of examination

3 hours

Approximate theory writing duration after reading and particulars verification in the public exam schedule

DGE TN HSE March 2026 timetable

DGE TN

Administered by the Directorate of Government Examinations, Chennai, for Tamil Nadu State Board Higher Secondary

dge.tn.gov.in

SCERT syllabus

Class 11 textbooks and syllabus prescribed by SCERT / School Education Department (Samacheer Kalvi)

DGE HSE scheme — syllabus prescribed by SCERT/DSE

English MCQ bank

This practice set is an English-language MCQ study adaptation, not the official mixed written paper

OpenExamPrep practice-content policy

₹150/₹200

School exam fee band for groups without/with practical subjects plus certificate/service charges (concessions apply)

DGE HSE_E.pdf school candidate fee table

Arrear 2026

March 2026 HSE+1 public theory examinations notified for eligible 2018–2025 arrear candidates on the official DGE timetable

DGE TN official timetable PDF 04.11.2025

Free English MCQ practice for Tamil Nadu HSE +1 Biology (DGE). Official paper is mixed written theory on the Samacheer Kalvi Class 11 syllabus — this bank is a study adaptation, not a format simulation.

Sample Tamil Nadu HSE First Year Biology Practice Questions

Try these sample questions to test your Tamil Nadu HSE First Year Biology exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which of the following is the most inclusive (broadest) taxonomic category among the options listed?
A.Species
B.Genus
C.Family
D.Kingdom
Explanation: Kingdom is the highest and most inclusive traditional taxonomic rank among the options; species is the least inclusive basic unit.
2Binomial nomenclature names a species with a two-word Latin name consisting of:
A.Genus and specific epithet
B.Phylum and class
C.Kingdom and domain
D.Family and order
Explanation: Carl Linnaeus’s binomial system uses the genus name followed by the specific epithet (e.g., Homo sapiens).
3A herbarium primarily serves as a repository of:
A.Pressed, dried, and labeled plant specimens
B.Preserved animal skeletons only
C.Soil mineral samples
D.Live microbial cultures only
Explanation: A herbarium stores pressed, dried plant specimens with collection data for identification, teaching, and research.
4In taxonomy, a taxon is best defined as:
A.Any rank or group of organisms that is given a formal name
B.Only the species category
C.Only kingdoms recognized by Whittaker
D.A non-living environmental factor
Explanation: A taxon (plural: taxa) is a taxonomic group of any rank that is formally recognized and named.
5In the five-kingdom system of Whittaker, fungi are separated from plants mainly because fungi:
A.Are eukaryotic heterotrophs with chitinous cell walls and absorptive nutrition
B.Are prokaryotic and lack nuclei
C.Always lack cell walls
D.Have chlorophyll and perform photosynthesis
Explanation: Fungi are eukaryotic heterotrophs that absorb nutrients and typically have chitin in cell walls, unlike photoautotrophic plants with cellulose walls.
6Archaebacteria differ from eubacteria in that many archaebacteria:
A.Have distinctive membrane lipids and often live in extreme environments
B.Always possess peptidoglycan identical to eubacteria
C.Are multicellular animals
D.Lack any nucleic acids
Explanation: Archaea have unique membrane lipids (e.g., ether-linked) and many are extremophiles; their cell-wall chemistry also differs from typical eubacterial peptidoglycan.
7Viruses are not placed in Whittaker’s five kingdoms primarily because they:
A.Are acellular and obligate intracellular parasites without independent metabolism
B.Photosynthesize like plants
C.Have true tissues and organs
D.Are always larger than bacteria
Explanation: Viruses lack cellular organization and independent metabolism; they replicate only inside host cells and thus fall outside classical cellular kingdoms.
8In lichen, the symbiotic partners are typically:
A.An alga (or cyanobacterium) and a fungus
B.A fungus and a higher plant root only
C.A bacterium and a virus only
D.Two different animals
Explanation: Lichens are symbiotic associations of a fungal partner (mycobiont) with a photosynthetic alga or cyanobacterium (phycobiont).
9Which of the following is a characteristic feature used to distinguish cyanobacteria (blue-green algae) from true eukaryotic algae?
A.Presence of chlorophyll a with prokaryotic cell organization lacking membrane-bound chloroplasts
B.Presence of true membrane-bound chloroplasts and nuclei
C.Multicellular tissues with xylem and phloem
D.Chitinous cell walls and absorptive nutrition
Explanation: Cyanobacteria are prokaryotes with photosynthetic pigments (including chlorophyll a) but no true membrane-bound chloroplasts or nuclei, unlike eukaryotic algae.
10Bryophytes are often called amphibians of the plant kingdom because they:
A.Require water for fertilization though they live on land
B.Have seeds and flowers
C.Are exclusively marine red algae
D.Live only in seawater
Explanation: Bryophytes inhabit land but need water for free-swimming male gametes to reach archegonia—hence the amphibian analogy.

About the Tamil Nadu HSE First Year Biology Practice Questions

Verified exam format metadata for Tamil Nadu Higher Secondary First Year (HSE +1 / Class 11) Biology under the Directorate of Government Examinations (DGE), Tamil Nadu is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.