Biology - Class IX Resources

The following list of online resources are provided as a sample of curated resources. New resources shall be added as we come across interesting and relevant online materials.

1. Onion and Cheek Cell

Description: Web link, webpages, or simulation that show cell as the building block of life (human check is made of cheek cells and onion contain peel or epidermal cells)

Core Concepts: Cells as the building blocks of all living things (plants and animals) either small or big in size, or  simple or complex in nature. 


2. Cellular Organelles

Description: Webpage and video that explain about  cell organelles (tiny organs of cells) that are associated with specific biological role(s) or cellular functions.

Core Concepts:  Cell organelles that carry specific biological or cellular  function.


3. How Shape of a Cell is Adapted to Carry Out Specific Function

Description: Webpages or online pieces that explain how the shape of a cell is suited to carry out specific function or biological role (e.g., nerve cells are elongated to carry never impulse). 

Core Concepts: The shape of cells determines or confers their corresponding biological functions  (Collinearity between shape and function).


4. Photosynthesis in Plants

Description: Article that explains the conversion of light energy (photons) into chemical energy (sugar) during photosynthesis.

Core Concepts: Conversion of light energy into chemical energy in plants.

Link: Webpage on how photosynthesis transforms sunlight into chemical energy

5. Significance of Photosynthesis

Description: Video that explains the significance of photosynthesis.

Core Concepts:  Photosynthesis and its significance.

Link: Video on the significance of photosynthesis

6. Understanding Plants Hormones

Description: Article that explains the role of plant hormones (Auxins, cytokinins, gibberellins, abscisic acid and ethylene) in growth and development of plants.

Core Concepts:  The roles of plant hormones.

Link: Webpage on the plant hormones

7. Plant Hormones

Description: Video that explains how Auxin (Indole-3-acetic acid, IAA-artificial hormone) affects the growth and development of plant.

Core Concepts:  Roles of IAA (artificial hormone).

Link: Video on plants hormones

8. Digestive System

Description: Video and online pieces that explain the components of the human digestive system and the processes involved in the digestion of the food.

Core Concepts:  Physiology of the human digestive system.


9. The Anatomy of the Human Heart

Description: Video that explains the anatomical structures of human heart and their corresponding physiological functions.

Core Concepts:  Working of human heart (physiology of human heart).

Link: Video on to learn how human heart works

10. How do the Heart Valves Work?

Description: Video that explains types of human heart valves and their corresponding functions with respect to the physiology of the blood circulation within the heart. 

Core Concepts:  Human heart valves and their function.

Link: Video on the function of heart valves

11. Circulatory and Respiratory System

Description: Article or online piece that explain physiology of human circulatory and respiratory system.

Core Concepts:  Human circulatory and respiratory system.

Link: Article or online piece on circulatory and respiratory system

12. Coordination and Control: The Nervous and Endocrine Systems

Description: Articles that explain components of the nervous and endocrine system;  and how nervous and endocrine system bring response and coordination in the human body.

Core Concepts:  Response and coordination by nervous and endocrine system.

Link: PDF article on the nervous and endocrine systems

13. Endocrine Glands and Hormones 

Description: Online piece or webpage that explains major human endocrine glands and their secretions (hormones).

Core Concepts: Endocrine glands and their secretions.

Link: Webpage on endocrine system

14. Ecological Consequences of Extinction

Description: Technical report or article that explains how the loss of species(predators. herbivores or frugivores, or pollinators) affects the entire ecosystem.

Core Concepts: Interaction, energy, dynamics in the environment.

Link: Technical report or article on how the loss of species affects the entire ecosystem

15.DNA Workshop (Protein Synthesis)

Description: Online piece that explains how genes are expressed in the form of character or traits through protein- mediated mechanism; or molecular, sub-cellular, or cellular mechanisms (e.g., Gene/DNA codes keratin protein and keratin proteins form hair)

Core Concepts: Gene expression in the form of traits or characters.

LinkWebpage on protein-mediated gene expression  

16. DNA, Genes, and Chromosomes

Description: Webpages, or online articles that explain how genetic entities, such as genes, DNA, and chromosomes are related to each other by their size (size sequence) or biological function.

Core Concepts: Relationship of genetic entities, such as genes, DNA, and chromosome. 


17. Deoxyribonucleic Acid (DNA)

Description: Article that explain how the genetic information (blue print required for making organism or protein) is encoded the DNA structure, i.e., nucleotides or nitrogenous base sequence. 

Core Concepts: The molecular conformation or structure of DNA.


19. Genetic Engineering/Recombinant DNA Technology

Description: Journal articles, webpages, or online pieces that offer scientific insight onto how genetic engineering or recombinant DNA technology (rDNA Technology) is carried out, applications of rDNA technology, and biological and ethical concerns of rDNA technology. 

Core Concepts: Manipulation of the genetic make-up/genotype/genome of the organism.


20. Human, Social and Environmental impacts of Human Genetic Engineering

Description: Article that explains the impacts of genetic engineering in terms of human, social, and environmental; and the corresponding ethical concerns. 

Core Concepts: Risks of genetic engineering. 

Link: Webpage on human, social and environmental impacts of genetic engineering

21. Fossil Record

Description: The pictorial fossil record that implies the evolution of organisms in terms of common ancestry, diversity, extinction, and changes of life forms (gradual changes in structures and processes) throughout the history of life on the earth. 

Core Concepts: Evolution of organisms from a common ancestry.

Link: Website on pictorial fossil record

22. Paleontology

Description: Online piece or article that explains the conditions of the past environment (plants and animals) based on the characteristics of the fossils. 

Core Concepts: Evolution of organisms.

Link: Webpage on paleontology

23. Evolutionary Embryology

Description: Pictorial representation (illustration) of embryos of different organisms that conjectures their evolution from a common ancestry or evolutionary relationships based on the anatomical and morphological similarities of embryos.

Core Concepts: Evolution of organisms from a common ancestry.

Link: Webpage on the pictorial representation of embryos of different organisms

24. Theories of Evolution  

Description:  Article that explains the mechanism of the evolution of organisms based on the postulations or ideas of Lamarckism, Darwinism, and Mutation theory.

Core Concepts: Theories that explain the evolution of organisms.

Link: Webpage on theories that explain evolution of organisms