Harmful and beneficial microorganisms
Anuradhika Lakmali April 5, 2023
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Harmful and beneficial microorganisms

Microorganisms are tiny organisms that are invisible to the naked eye. These organisms are incredibly diverse and can be found almost anywhere, from the soil beneath our feet to the air we breathe. Some microorganisms are harmless or even beneficial, while others can cause serious illnesses and diseases. Image by <a href=”https://www.freepik.com/free-photo/representation-microorganisms-concept_36488174.htm#query=microorganisms&position=49&from_view=search&track=sph”>Freepik</a> Microorganisms Definition Microorganisms, […]

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Phylum Mollusca characteristics
Anuradhika Lakmali April 5, 2023
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Phylum Mollusca characteristics

What are invertebrates Invertebrates are animals that lack a vertebral column or backbone. They are a diverse group of animals that include a large number of phyla. Phyla of invertebrates Porifera: Sponges Cnidaria: Jellyfish, coral, anemones, and hydroids Platyhelminthes: Flatworms Nematoda: Roundworms Annelida: Segmented worms, including earthworms and leeches Mollusca: Snails, clams, octopuses, and squid […]

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Characteristics of phylum Porifera
Anuradhika Lakmali April 5, 2023
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Characteristics of phylum Porifera

Phylum Porifera The aquatic animal phylum Porifera is well known for its sponges. Sponges are sessile, meaning they attach themselves to surfaces and cannot move. Characteristics of phylum Porifera Asymmetrical body Lack true tissues, organs, or organ systems Water enters through pores, passes through the sponge’s body, and exits through a larger opening called the […]

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5 Groups of vertebrates
Anuradhika Lakmali April 2, 2023
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5 Groups of vertebrates

Groups of vertebrates Vertebrates are animals that have a backbone or spinal column, which provides structural support and protects the spinal cord. There are five major groups, or classes, of vertebrates: Fish: Fish are aquatic animals that have gills for breathing and scales to protect their skin. They are the most diverse group of vertebrates, […]

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Is iron rusting a chemical change?
Anuradhika Lakmali April 2, 2023
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Is iron rusting a chemical change?

Iron rusting is a chemical change that occurs when iron reacts with oxygen and water to form a compound called iron oxide or rust. This reaction is an example of an oxidation-reduction (redox) reaction, which involves the transfer of electrons between the reactants. During the rusting process, iron atoms lose electrons to oxygen atoms, forming […]

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Phylum Echinodermata examples
Anuradhika Lakmali April 2, 2023
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Phylum Echinodermata examples

Phylum Echinodermata Phylum Echinodermata are: Radial symmetry as adults, bilateral symmetry as larvae Hard endoskeleton composed of calcium carbonate plates Water vascular system for 🡪 locomotion, respiration, and feeding Tube feet for movement and feeding Regeneration ability Examples of Echinodermata Phylum Echinodermata is a group of marine animals that includes starfish, sea urchins, sand dollars, […]

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Acid base titration
Anuradhika Lakmali March 31, 2023
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Acid base titration

Weak Acid Strong Base Titration In a weak acid-strong base titration, a weak acid is titrated with a strong base to determine its concentration. The aim of the experiment is to add the base to the acid in small amounts until the solution becomes neutral. The endpoint is reached when the pH of the solution […]

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Families of mammals
Anuradhika Lakmali March 31, 2023
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Families of mammals

Mammals are a class of warm-blooded animals that possess hair or fur, mammary glands that produce milk for feeding their young, and three middle ear bones. There are many different families of mammals, each with unique characteristics and adaptations. List of families of mammals List of some of the major families of mammals Felidae (cats) […]

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Monkeys in rainforest
Anuradhika Lakmali March 31, 2023
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Monkeys in rainforest

Monkeys are an important part of the rainforest ecosystem, playing a key role in seed dispersal, pollination, and food chain dynamics. There are many different species of monkeys that live in rainforests around the world. Types of Monkeys in rainforest foods chins There are many different types of monkeys that can be found in rainforests, […]

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Cactus in desert food chains
Anuradhika Lakmali March 29, 2023
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Cactus in desert food chains

Cactus in desert Cactus plants are a crucial component of desert food chains, and they have evolved many adaptations to survive in the harsh and arid desert environment. Types of cacti in desert food chains There are many different types of Cactus that can be found in desert ecosystems, including the saguaro cactus, prickly pear […]

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