DoAssignment study guide
Ontario Grade 11 Biology (SBI3U) curriculum and lessons
Follow the Ontario SBI3U path from diversity and evolution through genetic processes, animal systems, and plant structure and growth. Use the official expectation codes to find the exact topic you need.
Course overview
Grade 11 Ontario Biology (SBI3U) course overview
This independent guide covers Grade 11 Biology (SBI3U). Its 6 course sections lead to the complete topic map below; open a written lesson where one has been published. Read the official Ontario curriculum for exact requirements.
این راهنمای مستقل دربارهٔ زیستشناسی پایه یازدهم انتاریو (SBI3U) است. از بخشهای زیر برای پیدا کردن موضوع مورد نظر و درسهای منتشرشده استفاده کنید. برنامهٔ درسی رسمی انتاریو
Course pathway: University Preparation
مسیر تحصیلی: آمادگی دانشگاه
- A · Scientific Investigation Skills and Career Exploration (مهارتهای پژوهش علمی و بررسی مسیرهای شغلی)
- B · Diversity of Living Things (گوناگونی جانداران)
- C · Evolution (فرگشت)
- D · Genetic Processes (فرایندهای ژنتیکی)
- E · Animals: Structure and Function (جانوران: ساختار و کارکرد)
- F · Plants: Anatomy, Growth, and Function (گیاهان: کالبد، رشد و کارکرد)
Course questions
Studying SBI3U: topics, lessons, and official requirements
The course map includes Diversity of Living Things, Evolution, Genetic Processes, and 3 other sections. Follow the complete section list above for the full study path.
درس زیستشناسی پایه یازدهم انتاریو (SBI3U) چه مباحثی دارد؟ از جمله مباحث این درس گوناگونی جانداران، فرگشت، فرایندهای ژنتیکی است. فهرست کامل بخشها در بالای صفحه قرار دارد.
15 of 67 written lessons are currently published and free to read. Open a linked lesson in the section map above. Check the official Ontario curriculum for exact requirements.
درسها و برنامهٔ درسی زیستشناسی پایه یازدهم انتاریو را از کجا پیدا کنم؟ اکنون 15 درس از 67 درس نوشتاری منتشر شده و خواندن آنها رایگان است. درسهای دارای پیوند را در نقشهٔ بخشهای بالا باز کنید. برای شرایط دقیق به برنامهٔ درسی رسمی انتاریو مراجعه کنید.
Publication status
15 of 67 written lessons published
The topic map covers the course expectations. A topic marked “written lesson not published” remains available for practice and tutoring, but does not have a reviewed written lecture yet.
SBI3U study path
Build biology from diversity to living systems
Classification, kingdoms, sampling, dichotomous keys, and biodiversity.
Natural and artificial selection, evidence, adaptation, and speciation.
Meiosis, alleles, inheritance patterns, Punnett squares, and ethics.
Respiratory, digestive, and circulatory systems and their interactions.
Vascular tissues, transport, reproduction, growth, and sustainability.
Review the SNC2D prerequisite · Continue to SBI4U Grade 12 Biology · Browse all courses
Free published lessons
Start learning SBI3U
These lessons are public, free to read, and connected to the full course map below.
In SNC2D, you learned to ask questions about the natural world and use evidence to investigate them. A biological investigation…
A dichotomous key is a sequence of paired choices that helps identify an organism. Each pair should compare the same observable…
A Punnett square organizes the possible allele combinations from two parents. In a simple hypothetical trait with complete dominance…
In SNC2D, you learned that investigations begin with questions and use observations or measurements as evidence. Biology uses the…
In SNC2D, you practised asking questions about science and using information to investigate them. This lesson builds on that skill.…
In Grade 10 science, you practised asking questions, planning fair tests, and following laboratory instructions. Those habits matter…
In earlier science courses, you learned that an investigation begins with a question and uses observations or measurements as…
In science, a result is useful only if it has been recorded clearly enough to be checked and understood. In Grade 10 science, you…
SBI3U
Topics by strand
Plan, conduct, evaluate, and communicate safe biology investigations; explore life-science careers.
- A1.1 · Form research questions, predictions, and testable hypotheses (published written lesson)
- A1.2 · Choose suitable instruments, materials, and inquiry procedures (published written lesson)
- A1.3 · Locate relevant print and electronic research sources (published written lesson)
- A1.4 · Plan investigations using safe laboratory practices (published written lesson)
- A1.5 · Conduct safe inquiries while controlling relevant variables (published written lesson)
- A1.6 · Record accurate observations and data in suitable formats (published written lesson)
- A1.7 · Organize information and document research sources (published written lesson)
- A1.8 · Analyse data against predictions and evaluate error or bias (written lesson not published)
- A1.9 · Evaluate research sources for logic, accuracy, and reliability (published written lesson)
- A1.10 · Justify conclusions with inquiry results and scientific knowledge (published written lesson)
- A1.11 · Communicate procedures, results, and conclusions clearly (published written lesson)
- A1.12 · Use biological diagrams, symbols, graphs, and appropriate units (published written lesson)
- A1.13 · Report calculations with suitable accuracy and precision (published written lesson)
- A2.1 · Describe life-science careers and training pathways (published written lesson)
- A2.2 · Describe scientists, including Canadians, and their contributions (written lesson not published)
Classify living things, explain biodiversity, and evaluate human impacts.
- B1.1 · Assess risks and benefits of human intervention in biodiversity (written lesson not published)
- B1.2 · Analyse possible climate-change effects on biodiversity (written lesson not published)
- B2.1 · Use terminology for biodiversity and classification (written lesson not published)
- B2.2 · Classify and draw representatives of major kingdoms (written lesson not published)
- B2.3 · Sample an ecosystem and classify its organisms (written lesson not published)
- B2.4 · Create and use a dichotomous identification key (published written lesson)
- B3.1 · Explain taxonomic ranks and phylogenetic relationships (written lesson not published)
- B3.2 · Compare prokaryotes, eukaryotes, and viruses (written lesson not published)
- B3.3 · Compare structural and functional traits across kingdoms (written lesson not published)
- B3.4 · Describe major structural and functional changes in life over time (written lesson not published)
- B3.5 · Explain how biodiversity supports viable, resilient ecosystems (written lesson not published)
Investigate selection, evidence of evolutionary change, adaptation, and speciation.
- C1.1 · Assess economic and environmental impacts of artificial selection (written lesson not published)
- C1.2 · Evaluate environmental change, natural selection, and species vulnerability (written lesson not published)
- C2.1 · Use evolution, niche, mutation, extinction, and speciation terminology (written lesson not published)
- C2.2 · Research factors that influence evolutionary processes (written lesson not published)
- C2.3 · Evaluate contributions to modern evolutionary theory (written lesson not published)
- C2.4 · Compare natural and artificial selection through a case study (written lesson not published)
- C3.1 · Explain biological change over time through natural selection (written lesson not published)
- C3.2 · Explain adaptation under changing environmental pressures (written lesson not published)
- C3.3 · Explain how new species can arise (written lesson not published)
- C3.4 · Compare mechanisms including variation, selection, and genetic drift (written lesson not published)
Connect meiosis and inheritance to genetic probabilities and ethical questions.
- D1.1 · Analyse social and ethical implications of genetics research (written lesson not published)
- D1.2 · Evaluate recent advances in genetics knowledge and technology (written lesson not published)
- D2.1 · Use chromosome, allele, gamete, haploid, and diploid terminology (written lesson not published)
- D2.2 · Investigate meiosis and explain it with labelled diagrams (written lesson not published)
- D2.3 · Solve monohybrid, dihybrid, and sex-linked inheritance problems (published written lesson)
- D2.4 · Test inheritance patterns with crosses and probability (written lesson not published)
- D3.1 · Explain meiosis, chromosome movement, and crossing over (written lesson not published)
- D3.2 · Relate DNA, genes, chromosomes, alleles, mitosis, and meiosis (written lesson not published)
- D3.3 · Explain genotype, phenotype, dominance, and other inheritance patterns (written lesson not published)
- D3.4 · Describe genetic disorders involving mutations or chromosome errors (written lesson not published)
- D3.5 · Explain uses and implications of reproductive technologies (written lesson not published)
Study respiratory, circulatory, and digestive systems and their interactions.
- E1.1 · Evaluate technologies that improved knowledge of body systems (written lesson not published)
- E1.2 · Link health needs to developments in body-system science (written lesson not published)
- E2.1 · Use terminology for animal anatomy and physiology (written lesson not published)
- E2.2 · Investigate relationships among animal organ systems (written lesson not published)
- E2.3 · Measure respiratory and circulatory responses to stimuli (written lesson not published)
- E3.1 · Explain ventilation and gas exchange from environment to cell (written lesson not published)
- E3.2 · Explain digestion and nutrient supply for energy and growth (written lesson not published)
- E3.3 · Explain circulation and transport of essential substances (written lesson not published)
- E3.4 · Describe disorders of respiratory, digestive, and circulatory systems (written lesson not published)
Study vascular tissues, plant reproduction and growth, and sustainable plant use.
- F1.1 · Evaluate plants’ importance to Canadian society (written lesson not published)
- F1.2 · Compare cultural uses of plants and their sustainability (written lesson not published)
- F2.1 · Use terminology for plant tissues, structures, and reproduction (written lesson not published)
- F2.2 · Investigate environmental factors affecting plant growth (written lesson not published)
- F2.3 · Identify and diagram specialized tissues in roots, stems, and leaves (written lesson not published)
- F2.4 · Investigate methods of plant propagation (written lesson not published)
- F3.1 · Explain plant tissue structures and material transport (written lesson not published)
- F3.2 · Compare monocot and dicot structures and evolution (written lesson not published)
- F3.3 · Explain natural reproduction and artificial propagation of plants (written lesson not published)
- F3.4 · Describe growth regulators and environmental growth factors (written lesson not published)
- F3.5 · Explain plants’ role in ecological succession and biodiversity (written lesson not published)
Worked examples
Start with worked Grade 11 examples
These original examples introduce selected SBI3U expectations. The full expectation map is not a complete set of published written lessons or a substitute for official course materials and assignments. The strand-prefixed labels below identify the matching Ontario specific expectations; titles are concise study-guide paraphrases.
Three leaves are broad and smooth, broad and toothed, or needle-shaped. Give the first two choices in an identification key.
Worked method: First separate needle-shaped from broad leaves. Then split broad leaves by smooth versus toothed edges. Each choice uses an observable trait.
فارسی · توضیح مثال
سه برگ پهن و صاف، پهن و دندانهدار یا سوزنیشکل هستند. دو انتخاب نخست یک کلید شناسایی را بنویسید. نخست برگ سوزنی را از پهن جدا کنید. سپس برگ پهن را با لبه صاف یا دندانهدار جدا کنید. هر انتخاب بر ویژگی مشاهدهپذیر تکیه دارد.
For two heterozygous Aa parents, what fraction of offspring genotypes is aa?
Worked method: Each parent produces A or a gametes. The four equally likely combinations are AA, Aa, Aa, aa; one of four is aa, so the probability is 25%.
فارسی · توضیح مثال
اگر هر دو والد Aa باشند، چه کسری از ژنوتیپ فرزندان aa خواهد بود؟ هر والد گامت A یا a میدهد. چهار حالت AA، Aa، Aa و aa بهدست میآید؛ یک حالت از چهار حالت aa است، پس احتمال ۲۵٪ است.
Explain how oxygen moves from an inhaled breath to a working muscle cell.
Worked method: Oxygen diffuses from alveoli to blood, is carried by circulation, and diffuses into the muscle cell. The respiratory and circulatory systems cooperate.
فارسی · توضیح مثال
توضیح دهید اکسیژن از هوای دم تا یاخته ماهیچهای فعال چگونه میرود. اکسیژن از کیسههای هوایی به خون انتشار مییابد، با گردش خون حمل میشود و وارد یاخته ماهیچهای میشود. دستگاه تنفس و گردش خون همکاری میکنند.
Try independently, then check
Write your own solution before opening each answer. If a step is unclear, review the matching expectation or a Grade 10 prerequisite.
Why can a dichotomous key give a wrong identification when a trait is missing?
Show worked answer
The key depends on observed traits at every branch; missing or misread traits can send the specimen to the wrong branch.
فارسی · تمرین و پاسخ
چرا کلید دوشاخهای با نبود یک ویژگی ممکن است شناسایی نادرست بدهد؟ کلید در هر شاخه به ویژگی مشاهدهشده نیاز دارد؛ ویژگی گمشده یا بدخوانده میتواند نمونه را به شاخه نادرست ببرد.
An Aa × aa cross produces which possible genotypes, and in what expected ratio?
Show worked answer
Aa and aa in a 1:1 expected ratio. This is a probability, not a guarantee for a small family.
فارسی · تمرین و پاسخ
آمیزش Aa × aa چه ژنوتیپهایی و با چه نسبت مورد انتظار میدهد؟ Aa و aa با نسبت مورد انتظار ۱:۱. این احتمال است، نه تضمین نتیجه یک خانواده کوچک.
Scientific investigation processes across expectations
These processes are practised throughout the course, rather than listed as separate lessons.
- Initiating and planning: pose testable questions, choose safe methods, identify variables, and predict outcomes (آغاز و برنامهریزی: طرح پرسش آزمونپذیر، انتخاب روش ایمن، تشخیص متغیرها و پیشبینی نتیجه)
- Performing and recording: observe specimens or simulations responsibly and organize accurate data (اجرا و ثبت: مشاهده مسئولانه نمونه یا شبیهسازی و سازماندهی داده دقیق)
- Analysing and interpreting: compare evidence with predictions, evaluate uncertainty, and justify conclusions (تحلیل و تفسیر: مقایسه شاهد با پیشبینی، ارزیابی عدمقطعیت و توجیه نتیجه)
- Communicating: use labelled biological diagrams, accepted terminology, units, and cited sources (ارتباط علمی: استفاده از شکل زیستی برچسبدار، واژگان درست، یکا و ارجاع منبع)
Source and coverage
Prerequisite: Science, Grade 10, Academic (SNC2D). Confirm your current school timetable and admission requirements.
The expectation map follows the official Ontario biology curriculum. Titles are concise study-guide paraphrases; consult the official source for exact requirements. Browse all courses.
Sources and editorial process
Curriculum-aligned and reviewed before publication
This independent study guide follows the official course source. It is not an official government, school, or university publication.
Lessons may be AI-assisted or editorially prepared. Published content is checked for structure, notation, calculations, course boundaries, and readability before release. Because corrections can still be necessary, readers can report a problem.