Explanation

• The Sun is the ultimate and main source of energy on Earth.
• It provides energy through solar radiation (light and heat).
• All forms of energy on Earth directly or indirectly come from the Sun.
• It supports life, climate, and ecosystems on Earth.

This energy is then converted into various forms, such as:

• Thermal energy (heat)
• Kinetic energy (wind, water currents)
• Electrical energy (generated from solar panels)
• Chemical energy (fossil fuels, biomass)
• Biological energy (food chains, ecosystems)

Last verified on 16-06-2026

Explanation

• The movement of water from higher water potential to lower water potential is called osmosis.
• It occurs through a semi-permeable membrane.
• Only water molecules move in osmosis.
• It is a passive process (no energy required).

Last verified on 18-06-2026

Explanation

• Platelets, also called thrombocytes.
• They are blood cells that play a vital role in blood clotting.
• When a blood vessel is injured, platelets aggregate to form a plug that stops the bleeding.

Last verified on 02-04-2026

Explanation

• Taxonomy is the science of classifying and naming organisms.
  • Helps organize plants, animals, and microorganisms into groups.
  • Based on shared characteristics, genetics, and evolutionary relationships.
  • Developed initially by Carl Linnaeus in the 18th century.

Last verified on 06-02-2026

Explanation

• Some organisms feed on dead and decaying organic matter instead of living organisms.
• These organisms are called saprotrophs.
• They play an important role in decomposition and nutrient recycling in ecosystems.
• Examples include fungi, bacteria, and some protists.

Last verified on 01-02-2026

Explanation

• Transpiration is the process by which plants lose water in the form of vapor from leaves, stems, and flowers.
• It helps in cooling the plant, nutrient transport, and maintaining water balance.

Additional information:

• Evaporation: Water loss from soil or water surfaces
• Respiration: Energy release by breaking down sugars
• Photosynthesis: Production of food using sunlight, CO₂, and water

Last verified on 27-01-2026

Explanation

Plasmodium is a genus of protozoan parasites that cause malaria.

There are several species of Plasmodium that can infect humans, including P. falciparum, P. vivax, P. ovale, and P. malariae.

Explanation

• Enzymes are biological molecules made up of proteins, which catalyze chemical reactions, speeding up metabolic processes in living organisms.
• Proteins provide the structure and active site for enzymes to bind substrates and facilitate chemical reactions.

Explanation

• The correct answer is: Cell does not contain the hereditary material.

The cell theory postulates:

• All living organisms are made up of one or more cells.
• The cell is the fundamental unit of life.
• New cells are derived from pre-existing cells (biogenesis).

Explanation

• A group of similar cells that perform a specific function combine to form tissue.
• Tissues then combine to form organs.
• Organs work together to form systems.