Class 9th · Biology · Chapter 2
Chapter 2: Biodiversity
Chapter 2 of the Punjab Board Class 9th Biology textbook runs from page 25 to 40 and covers 8 topics. Its exercise has exercise, multiple choice questions, short / constructed response questions, comprehensive questions, conceptual questions, exercise, multiple choice questions, short / constructed response questions, comprehensive questions and conceptual questions. Open any of those pages in GenZ Books, tap a question, and the answer is worked from this chapter.
Open Chapter 2 of Biology in GenZ Books
The same Class 9th textbook, page for page. Tap any question and get the answer worked from that chapter — English and Urdu.
Topics in this chapter
- 2.1Biodiversityp. 25
- 2.2Classificationp. 26
- 2.3Taxonomic Ranksp. 27
- 2.4History of Classificationp. 29
- 2.5Domains of Living Organismsp. 31
- 2.6Classification of Domain Eukaryap. 33
- 2.7Status of Virus in Classificationp. 34
- 2.8Binomial Nomenclaturep. 36
Exercise
- Exercisep. 38
- Multiple Choice Questionsp. 38
- Short / Constructed Response Questionsp. 40
- Comprehensive Questionsp. 40
- Conceptual Questionsp. 40
- Exercisep. 60
- Multiple Choice Questionsp. 60
- Short / Constructed Response Questionsp. 61
- Comprehensive Questionsp. 62
- Conceptual Questionsp. 62
A sample answer from GenZ Books
Define · page 32: The domain includes all اںشح multicellular eukaryotes. They have complex eukaryotic cells with mie) ind other membrane-bound organelles. This domain contains kingdomenro ista, fungi, plantae and animalia. 0 Eukarya cells are larger and contain more complex structures.
Here is a clear and concise definition of the selected text, focusing on key terms:
The provided text describes the Domain Eukarya (ڈومین یوکاریا), one of the three domains of life.
- Domain Eukarya (ڈومین یوکاریا): This is the highest taxonomic rank that includes all organisms whose cells have a true nucleus and other membrane-bound organelles.
- Multicellular eukaryotes (کثیر خلوی یوکاریوٹس): Organisms composed of multiple eukaryotic cells. These cells are characterized by having a nucleus and other specialized structures enclosed by membranes.
- Complex eukaryotic cells (پیچیدہ یوکاریوٹک خلیات): These cells are typically larger and more organized than prokaryotic cells. They contain various specialized structures, each with a specific function.
- Mitochondria (مائٹوکونڈریا): These are membrane-bound organelles within eukaryotic cells, often called the "powerhouses of the cell." They are responsible for generating most of the energy (ATP) needed for cellular activities.
- Membrane-bound organelles (جھلی سے بند عضویے): These are specialized structures within a eukaryotic cell that are enclosed by a lipid membrane, such as the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus. Each organelle performs a specific function.
- Kingdom Protista (کنگڈم پروٹسٹا): A diverse group of mostly single-celled eukaryotic organisms that do not fit into the plant, animal, or fungi kingdoms.
- Kingdom Fungi (کنگڈم فنجائی): Eukaryotic organisms that include yeasts, molds, and mushrooms. They are typically decomposers.
- Kingdom Plantae (کنگڈم پلانٹی): The kingdom of plants, which are multicellular eukaryotes that produce their own food through photosynthesis.
- Kingdom Animalia (کنگڈم اینیمیلیا): The kingdom of animals, which are multicellular, heterotrophic eukaryotes that obtain nutrients by consuming other organisms.
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