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Free Practice Questions for Sudan School Certificate — Biology

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Sample Sudan School Certificate — Biology Practice Questions

Try these sample questions to review concepts for the Sudan School Certificate — Biology exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 20+ question experience with AI tutoring.

1A new yeast cell grows as an outgrowth from a parent cell and then separates. Which reproductive process is described?
A.Binary fission
B.Budding
C.Conjugation
D.Fertilization
Explanation: Budding begins as a localized outgrowth of the parent. It differs from division into two approximately equal daughter cells.
2Why are plants grown from stem cuttings usually genetically similar to the parent plant, apart from new mutations?
A.Their cells undergo meiosis before rooting
B.They develop from fertilized eggs
C.Their new tissues arise through mitotic divisions
D.Their chromosomes are halved during rooting
Explanation: Vegetative propagation produces new tissues by mitosis. It does not combine gametes from different parents.
3In a flowering plant, which event is pollination?
A.Fusion of a sperm nucleus with an egg
B.Development of an ovule into a seed
C.Formation of pollen by meiosis
D.Transfer of pollen to a receptive stigma
Explanation: Pollination places pollen on the receptive stigma. Fertilization occurs later, after a pollen tube has delivered sperm cells to the ovule.
4In the usual angiosperm embryo sac, one sperm fuses with the egg and the other with two polar nuclei. What are the resulting ploidies?
A.Diploid zygote and triploid primary endosperm nucleus
B.Haploid zygote and diploid primary endosperm nucleus
C.Triploid zygote and diploid primary endosperm nucleus
D.Diploid zygote and haploid primary endosperm nucleus
Explanation: The haploid egg and sperm form a diploid zygote. The other haploid sperm combines with two haploid polar nuclei to form a triploid primary endosperm nucleus.
5A flowering plant has 2n = 24. In a typical embryo sac, what chromosome numbers occur in the egg, zygote and primary endosperm nucleus respectively?
A.24, 24, 36
B.12, 24, 36
C.12, 12, 24
D.24, 48, 72
Explanation: The haploid number is 12. Fertilization gives 2n = 24 in the zygote and triple fusion gives 3n = 36 in the primary endosperm nucleus.
6In a fern life cycle, which process produces haploid spores in the diploid sporophyte?
A.Fertilization
B.Budding
C.Meiosis
D.Mitosis of the gametophyte
Explanation: Meiosis reduces chromosome number in spore-producing structures of the sporophyte. The resulting spores grow into haploid gametophytes.
7After fertilization in a flowering plant, which structure normally develops into the seed coat?
A.The egg cell
B.The ovary wall
C.The pollen tube
D.The ovule's integuments
Explanation: The ovule's protective integuments form the seed coat. The ovary wall generally forms the fruit wall, while the fertilized egg develops into the embryo.
8A crop is propagated from cuttings of one parent, while another population is produced by sexual reproduction between genetically varied parents. Which comparison is most reasonable?
A.The cuttings preserve the parent's genotype more consistently; sexual offspring usually show more genetic variation
B.The cuttings necessarily show more recombination than sexual offspring
C.Every sexual offspring must have a different chromosome number from its parents
D.Both methods produce identical genotypes in every offspring
Explanation: Cuttings ordinarily propagate a genotype through mitosis. Meiosis and fertilization reshuffle alleles in sexual reproduction, increasing variation when the parents are genetically varied.
9Which term describes an organism's allele combination at a locus, such as Aa?
A.Phenotype
B.Genotype
C.Habitat
D.Gamete
Explanation: Genotype refers to genetic constitution. Phenotype refers to the observable expression of traits, which may also be influenced by the environment.
10For a trait with complete dominance, which mating is a test cross for an individual showing the dominant phenotype?
A.Cross with a homozygous dominant individual
B.Cross with any individual showing dominance
C.Cross with a homozygous recessive individual
D.Cross only with an individual of the same unknown genotype
Explanation: The recessive partner contributes only recessive alleles. Recessive offspring therefore reveal that the tested parent carries a recessive allele.

About the Sudan School Certificate — Biology Exam

Independent English-language MCQ study adaptation for the Arabic Biology paper, using the published guide's reproduction, genetics and ecosystem units. It is not an official translation or format simulation, and does not replace diagram drawing, laboratory learning or written explanations.

Exam sponsor: Ministry of National Education (وزارة التعليم والتربية الوطنية); General Directorate of Measurement, Evaluation and Examinations (الإدارة العامة للقياس والتقويم والامتحانات), Sudan. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Published 2025 guide: one three-hour, 100-mark written paper with diagrams, matching, MCQs, explanations and genetic problems. The April 2026 timetable confirms the subject's continued operation. Separate mandatory coursework, oral or practical assessment was not established in the accessed sources.

Time Limit

3 hours

Passing Score

Unknown — confirm the current pass standard with the examination authority.

Exam / Certification Fees

Unknown — confirm the current examination sitting fee with the examination authority.

Exam sponsor website

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

Official sources

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.

40%; 8 of 20 practice items

Reproduction

Asexual and sexual reproduction, plant fertilization, seeds and life cycles.

35%; 7 practice items

Genetics

Genotypes, test crosses, ABO and sex-linked inheritance, conditional probabilities.

25%; 5 practice items

Ecosystems

Trophic levels, production, nutrient cycling and measured energy transfer.

Preparing for the Sudan School Certificate — Biology Exam

What You Need to Know

  • Passing score: Unknown — confirm the current pass standard with the examination authority.
  • Assessment: Published 2025 guide: one three-hour, 100-mark written paper with diagrams, matching, MCQs, explanations and genetic problems. The April 2026 timetable confirms the subject's continued operation. Separate mandatory coursework, oral or practical assessment was not established in the accessed sources.
  • Time limit: 3 hours
  • Exam / certification fees: Unknown — confirm the current examination sitting fee with the examination authority. Official sources

Using Our Practice Resources

  • Work through all 20 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Sudan School Certificate — Biology: Suggested Study Strategy

1State the genetic model and conditions before calculating a probability.
2Practise drawing and labelling the prescribed life cycles and structures.

Frequently Asked Questions

Are these the official examination questions?

No. These are independent English study questions. The official written paper includes diagram work and constructed responses.

Who takes Biology?

The published academic guide lists Biology among the science stream's optional seventh subjects. Current registration and private-candidate eligibility should be confirmed with the examination administration.

Are the current sitting fee and pass mark verified?

No. These fields are pending primary-source confirmation. Check the current examination instructions and your registered school or centre. The Ministry portal publishes certificate issuance charges; those do not establish the examination sitting fee or a per-subject total.