Free Practice Questions for Kerala SSLC Biology

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Kerala SSLC Kannada — Academic Text (AT)

Practice Questions100 questions

Exam Review

Key Facts: Kerala SSLC Biology Exam

TE ~40 + CE ~10

Common subject total near 50 marks for Kerala SSLC Biology

Pareeksha Bhavan / SCERT evaluation practice (confirm current circular)

~1.5 h

Common theory (TE) duration for SSLC Biology written paper

Pareeksha Bhavan exam timetable practice (confirm current year)

D+ / ~30%

Often-cited minimum grade band under Kerala SSLC grade rules

Pareeksha Bhavan result rules (confirm current circular)

100

Free OpenExamPrep English practice MCQs (not official item count)

OpenExamPrep

FREE 2026 Kerala SSLC Biology English MCQ practice for Class 10 covering SCERT units from nervous system and sense organs through immunity, genetics, and evolution (TE ~40 + CE ~10 ≈ 50; ~1.5 h theory).

Sample Kerala SSLC Biology Practice Questions

Try these sample questions to review concepts for the Kerala SSLC Biology exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1The structural and functional unit of the nervous system is the:

A.Neuron

B.Nephron

C.Nephron loop

D.Nissl body only

Explanation: A neuron (nerve cell) is the structural and functional unit of the nervous system: it receives stimuli, conducts impulses, and communicates via synapses. Nephrons are kidney units; Nissl bodies are cytoplasmic features of neurons, not whole units.

2Which part of a typical multipolar neuron receives incoming stimuli from other cells?

A.Axon terminal only

B.Dendrites

C.Myelin sheath

D.Node of Ranvier only

Explanation: Dendrites are branched processes that receive synaptic input and carry graded signals toward the cell body. Axon terminals release transmitter; myelin insulates axons; nodes speed saltatory conduction but are not the primary receiving surface.

3In a chemical synapse, the direction of impulse transmission is normally:

A.Bidirectional at equal speed

B.From dendrite to axon of the same neuron only via gap junctions

C.From axon terminal of one neuron to dendrite/soma of the next

D.From myelin to node of Ranvier only

Explanation: Chemical synapses are typically one-way: neurotransmitter is released from the presynaptic axon terminal and acts on receptors on the postsynaptic membrane (often dendrite or soma). This polarity prevents reverse transmission under normal conditions.

4Which of the following best describes a reflex arc for a simple spinal reflex?

A.Brain cortex → cranial nerve → effector only

B.Hormone → blood → target organ only

C.Receptor → motor neuron → sensory neuron → brain always

D.Receptor → sensory neuron → spinal cord interneuron/motor pathway → effector

Explanation: A classic spinal reflex path is receptor → afferent (sensory) neuron → CNS integration (often spinal interneurons) → efferent (motor) neuron → effector (muscle/gland). The cerebral cortex is not required for many spinal reflexes.

5The myelin sheath around many vertebrate axons is formed by:

A.Schwann cells (PNS) or oligodendrocytes (CNS)

B.Osteocytes

C.Erythrocytes

D.Chondrocytes

Explanation: In the peripheral nervous system Schwann cells wrap axons; in the central nervous system oligodendrocytes form myelin. Myelin increases conduction speed via saltatory conduction. The other cell types are bone, blood, and cartilage cells.

6Which brain region is primarily responsible for coordinating voluntary muscle movements and maintaining posture and balance?

A.Medulla oblongata only for all motor plans

B.Cerebellum

C.Hypothalamus

D.Olfactory bulb

Explanation: The cerebellum fine-tunes and coordinates voluntary movements and helps maintain balance and posture by integrating sensory feedback. Medulla handles vital autonomic centers; hypothalamus regulates homeostasis/endocrine links; olfactory bulb processes smell.

7The part of the brain that regulates body temperature, thirst, hunger, and many endocrine links is the:

A.Cerebellum

B.Corpus callosum

C.Hypothalamus

D.Optic chiasma

Explanation: The hypothalamus is a key homeostatic center controlling temperature, thirst, hunger, and the pituitary–endocrine axis. Cerebellum coordinates movement; corpus callosum connects hemispheres; optic chiasma is a visual pathway crossing.

8Saltatory conduction occurs because action potentials jump between:

A.Dendritic spines only

B.Synaptic vesicles

C.Nissl bodies

D.Nodes of Ranvier

Explanation: In myelinated axons, depolarization is regenerated mainly at nodes of Ranvier, so the impulse appears to jump from node to node (saltatory conduction), which is faster and more energy-efficient than continuous conduction.

9Which statement about the autonomic nervous system is correct?

A.It regulates involuntary functions such as heart rate and gland secretion

B.It only innervates skeletal muscle for voluntary movement

C.It is identical to the somatic motor system for limb movement

D.It never uses chemical synapses

Explanation: The autonomic (visceral) nervous system regulates involuntary effectors—smooth muscle, cardiac muscle, and glands—via sympathetic and parasympathetic divisions. Skeletal muscle voluntary control is somatic.

10Phototropism in plants is mainly mediated by redistribution of the hormone:

A.Abscisic acid only

B.Auxin (IAA)

C.Ethylene only

D.Cytokinin only

Explanation: Uneven auxin distribution causes differential elongation, bending shoots toward light (positive phototropism). ABA mainly promotes dormancy/stress responses; ethylene is linked to fruit ripening/abscission; cytokinins promote cell division.

About the Kerala SSLC Biology Exam

The Kerala SSLC Biology examination evaluates Class 10 students on the SCERT Kerala Biology syllabus: Sensations and Responses; Windows of Knowledge; Chemical Messages for Homeostasis; Keeping Diseases Away; Soldiers of Defence; Unravelling Genetic Mysteries; Genetics for the Future; and The Paths Traversed by Life (evolution). Official assessment is Terminal Evaluation theory (commonly about 40 marks, about 1.5 hours) plus Continuous Evaluation (commonly about 10 marks) under Pareeksha Bhavan. English and Malayalam media are commonly available under board/school rules. Use this free 2026 English MCQ bank to strengthen concept recall before board writing and CE work—it is a study adaptation, not an official-format simulation.

Exam sponsor: Kerala Pareeksha Bhavan (Directorate of General Education, Government of Kerala); syllabus by SCERT Kerala. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

SSLC Biology is assessed as Terminal Evaluation theory (written paper, commonly about 40 marks and about 1.5 hours) plus Continuous Evaluation (CE, commonly about 10 marks) as notified by Kerala Pareeksha Bhavan under the SCERT syllabus. Theory follows the year’s scheme of short and long constructed responses with internal choice as applicable. Official papers are not pure English MCQ; this free bank is an English-language MCQ study adaptation for SCERT-focused concept practice only.

Time Limit

About 1.5 hours for theory (TE); Continuous Evaluation assessed separately (confirm current timetable)

Passing Score

Minimum grade/marks as notified by Kerala Pareeksha Bhavan (commonly described near D+ / about 30% under grade rules); always confirm the current circular for TE and CE requirements

Exam / Certification Fees

SSLC examination fee collected through affiliated secondary schools / Pareeksha Bhavan registration as notified for the session

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Kerala Pareeksha Bhavan (Directorate of General Education, Government of Kerala); syllabus by SCERT Kerala: official exam information

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

13%

Sensations and Responses

Neuron structure and impulse conduction, synapse, central and peripheral nervous system, brain and spinal cord, reflex arc, receptors, and plant responses.

13%

Windows of Knowledge

Structure and functions of eye, ear, nose, tongue, and skin; vision defects; hearing and balance; sensory pathways as windows of knowledge.

12%

Chemical Messages for Homeostasis

Endocrine glands and hormones, feedback control of homeostasis, major human hormones, and plant growth regulators.

12%

Keeping Diseases Away

Pathogens and modes of transmission, communicable and non-communicable disease examples, prevention, hygiene, and first-aid basics aligned to SCERT.

13%

Soldiers of Defence

Innate and acquired immunity, white blood cells and antibodies, vaccines, blood groups and transfusion, lymph, allergies, and HIV/AIDS basics.

13%

Unravelling Genetic Mysteries

DNA and RNA structure, genes and chromosomes, Mendelian inheritance patterns, sex determination, and sources of genetic variation.

12%

Genetics for the Future

Genetic engineering concepts, recombinant DNA, DNA fingerprinting, cloning and gene therapy ideas, GM organisms, and related ethical issues at Class 10 depth.

12%

The Paths Traversed by Life

Evidence of evolution, Lamarck and Darwin ideas, natural selection, speciation and fossils, and outline of human evolution.

Preparing for the Kerala SSLC Biology Exam

What You Need to Know

Passing score: Minimum grade/marks as notified by Kerala Pareeksha Bhavan (commonly described near D+ / about 30% under grade rules); always confirm the current circular for TE and CE requirements
Assessment: SSLC Biology is assessed as Terminal Evaluation theory (written paper, commonly about 40 marks and about 1.5 hours) plus Continuous Evaluation (CE, commonly about 10 marks) as notified by Kerala Pareeksha Bhavan under the SCERT syllabus. Theory follows the year’s scheme of short and long constructed responses with internal choice as applicable. Official papers are not pure English MCQ; this free bank is an English-language MCQ study adaptation for SCERT-focused concept practice only.
Time limit: About 1.5 hours for theory (TE); Continuous Evaluation assessed separately (confirm current timetable)
Exam / certification fees: SSLC examination fee collected through affiliated secondary schools / Pareeksha Bhavan registration as notified for the session Official sources

Using Our Practice Resources

Work through all 100 available questions
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Kerala SSLC Biology: Suggested Study Strategy

1Map every miss back to the matching SCERT chapter and redraw key diagrams (neuron, reflex arc, eye, ear, endocrine organs, DNA, and evolutionary evidence).

2Drill high-yield facts: synapse one-way transmission, hormone–gland pairs, blood group compatibility, Mendel ratios, and Darwin vs Lamarck contrasts.

3Treat CE and practical/skill work separately: school records, activities, and continuous evaluation still need classroom completion even when you drill MCQs here.

4Use official SCERT model questions and previous Pareeksha Bhavan papers for descriptive answer style; use this FREE English MCQ bank for rapid concept checks and weak-unit repair.

5Revise English scientific terms even if you write the board paper in Malayalam—this bank is an English-language study adaptation only.

Frequently Asked Questions

What does Kerala SSLC Biology cover?

It follows the SCERT Kerala Class 10 Biology units: Sensations and Responses; Windows of Knowledge; Chemical Messages for Homeostasis; Keeping Diseases Away; Soldiers of Defence; Unravelling Genetic Mysteries; Genetics for the Future; and The Paths Traversed by Life (evolution).

What is the official TE and CE format?

Biology is assessed as Terminal Evaluation (TE) theory—commonly about 40 marks and about 1.5 hours—plus Continuous Evaluation (CE), commonly about 10 marks, for a subject total near 50. Always verify the current Pareeksha Bhavan circular and SCERT scheme for the exact marks split and internal choice.

Is the official exam pure multiple choice?

No. The official paper is a mixed written theory exam with short and long answers plus CE components. This free bank is an English-language MCQ study adaptation for concept practice only—not an official-format simulation or translation of the board paper.

Why does examQuestions say not-published?

Pareeksha Bhavan / SCERT do not publish a permanent pure-MCQ item total for SSLC Biology. Scheme section marks and internal choice change how many items candidates attempt. This practice bank therefore uses examQuestions not-published and provides 100 free MCQs for revision only.

Who administers the exam?

Kerala Pareeksha Bhavan under the Directorate of General Education, Government of Kerala, conducts SSLC public examinations. SCERT Kerala provides the syllabus and textbooks.

Where can I find official notifications and schemes?

Check keralapareekshabhavan.in and scert.kerala.gov.in for the current year’s Biology scheme, model questions, timetable, and result notifications.

Free Practice Questions for Kerala SSLC Biology

Kerala SSLC Biology