What does Kerala Plus Two Biology (DHSE) cover?

It follows the NCERT Class 12 Biology units used for Kerala Higher Secondary Biology as a combined Botany + Zoology subject: sexual reproduction in flowering plants; human reproduction; reproductive health; inheritance and variation; molecular basis of inheritance; evolution; human health and disease; microbes in human welfare; biotechnology principles and applications; organisms and populations; ecosystem; and biodiversity and conservation, with Class 11 foundations as needed.

What is the official TE, CE, and practical format?

Biology is assessed as Terminal Evaluation (TE) theory (combined Botany + Zoology written paper, commonly about 2.5 hours), Continuous Evaluation (CE), and practical work. Always verify the current DHSE Kerala circular and scheme of examination for 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 and practical 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?

DHSE Kerala does not publish a permanent pure-MCQ item total for Plus Two 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?

The Directorate of Higher Secondary Education (DHSE), Kerala, under the Directorate of General Education, Government of Kerala, conducts Higher Secondary (Plus Two) public examinations.

Where can I find official notifications and schemes?

Check beta.hseportal.kerala.gov.in and related DHSE / Directorate of General Education Kerala portals for the current year’s Biology scheme, timetable, practical guidelines, and result notifications.

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100+ Free Kerala Plus Two Biology (DHSE) Practice Questions

Kerala Directorate of Higher Secondary Education (DHSE) Plus Two / Higher Secondary Biology Examination (Botany + Zoology) practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: Kerala Plus Two Biology (DHSE) Exam

Botany + Zoology

Combined Plus Two Biology paper under DHSE Kerala

DHSE Higher Secondary Biology subject structure

TE + CE + Practical

Typical assessment components for Kerala Plus Two Biology

DHSE Kerala HSE evaluation scheme (confirm current circular)

~2.5 h

Common theory (TE) duration for Plus Two Biology written paper

DHSE exam timetable practice (confirm current year)

100

Free OpenExamPrep English practice MCQs (not official item count)

OpenExamPrep

FREE 2026 DHSE Kerala Plus Two Biology English MCQ practice for Class 12 students covering NCERT units from flowering-plant reproduction through biodiversity (Botany + Zoology), with official assessment as TE theory (~2.5 h) plus CE and practical.

Sample Kerala Plus Two Biology (DHSE) Practice Questions

Try these sample questions to test your Kerala Plus Two Biology (DHSE) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In angiosperms, the nutritive tissue surrounding microspore mother cells inside the anther is the:

A.Tapetum

B.Epidermis

C.Endosperm

D.Nucellus

Explanation: Tapetum is the innermost wall layer of the microsporangium and nourishes developing microspore mother cells and pollen grains. Epidermis is outer wall; endosperm nourishes the embryo in seeds; nucellus is ovule tissue.

2How many functional megaspores typically remain after megasporogenesis in a Polygonum-type embryo sac?

A.Four functional megaspores

B.One functional megaspore

C.Two functional megaspores

D.Three functional megaspores

Explanation: In the monosporic Polygonum type, the megaspore mother cell undergoes meiosis to form a linear tetrad; usually only the chalazal megaspore remains functional while the other three degenerate.

3Triple fusion in flowering plants involves fusion of:

A.Egg and one male gamete only

B.Two male gametes with two eggs

C.One male gamete with two polar nuclei

D.Synergid with antipodal cells

Explanation: Triple fusion is fusion of one male gamete with the two polar nuclei in the central cell, producing the typically triploid primary endosperm nucleus. Syngamy is separate (egg + other male gamete).

4Geitonogamy differs from xenogamy because in geitonogamy pollen is transferred:

A.Between flowers of different species

B.Within the same closed flower only

C.From stigma to anther of the same flower

D.Between different flowers of the same plant

Explanation: Geitonogamy is pollination between different flowers of the same plant (genetically like selfing). Xenogamy is between flowers of different plants (true cross-pollination).

5Which wall layer of the anther helps in dehiscence by developing fibrous thickenings?

A.Endothecium

B.Tapetum

C.Middle layers only

D.Nucellus

Explanation: Endothecium develops fibrous bands that aid anther dehiscence, releasing pollen. Tapetum is nutritive; middle layers often degenerate; nucellus is ovular.

6Polyembryony means:

A.Formation of multiple fruits from one flower always

B.Occurrence of more than one embryo in a seed

C.Fusion of many pollen tubes only

D.Absence of endosperm in all seeds

Explanation: Polyembryony is the presence of more than one embryo in a seed (e.g., nucellar embryos in citrus). It is not defined as multiple fruits or pollen-tube fusion.

7After fertilization in angiosperms, the ovary wall develops into the:

A.Seed coat

B.Endosperm

C.Pericarp (fruit wall)

D.Plumule

Explanation: The ovary wall becomes the pericarp (fruit wall). Integuments form the seed coat; endosperm nourishes the embryo; plumule is the embryonic shoot.

8Self-incompatibility in flowering plants primarily prevents:

A.Fruit ripening after fertilization

B.Formation of endosperm in all seeds

C.Pollinator attraction by nectar

D.Germination or growth of self-pollen on a genetically related stigma

Explanation: Self-incompatibility is a genetic mechanism that prevents self-pollen from fertilizing ovules of the same plant (or closely related genotypes), promoting outbreeding.

9In a typical dicot ovule, the micropyle is the:

A.Opening through which the pollen tube usually enters

B.Scar where the seed attaches to the fruit

C.Chalazal junction of funicle and nucellus only

D.Layer of endosperm surrounding the embryo sac

Explanation: The micropyle is a small opening in the integuments through which the pollen tube typically enters. The hilum is the seed scar; chalaza is the basal region opposite the micropyle.

10Albuminous seeds are those that:

A.Always lack cotyledons

B.Retain endosperm as a food store in the mature seed

C.Have no embryo axis

D.Form only after apomixis

Explanation: Albuminous (endospermic) seeds retain endosperm as a major food reserve at maturity (e.g., castor, cereals). Exalbuminous seeds store food mainly in cotyledons.

About the Kerala Plus Two Biology (DHSE) Practice Questions

Verified exam format metadata for Kerala Directorate of Higher Secondary Education (DHSE) Plus Two / Higher Secondary Biology Examination (Botany + Zoology) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.

100+ Free Kerala Plus Two Biology (DHSE) Practice Questions

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Key Facts: Kerala Plus Two Biology (DHSE) Exam

Sample Kerala Plus Two Biology (DHSE) Practice Questions

About the Kerala Plus Two Biology (DHSE) Practice Questions