Kerala Board Class 10 Biology — Flashcards for Quick Revision

A: Autotrophic nutrition is the mode of nutrition where organisms prepare their own food from simple inorganic substances like carbon dioxide and water using energy sources like sunlight. Example: Green

A: 6CO₂ + 12H₂O → Light/Chlorophyll → C₆H₁₂O₆ + 6H₂O + 6O₂ Six molecules of carbon dioxide plus twelve molecules of water, in the presence of light and chlorophyll, produce one molecule of glucose, six

A: 1. Light (sunlight as energy source) 2. Carbon dioxide (CO₂ from air) 3. Water (H₂O from soil) 4. Chlorophyll (green pigment in chloroplasts) Without any of these materials, photosynthesis cannot occ

A: Respiration is the whole chain of processes from the inhalation of air to the use of oxygen in the cells. The term 'respiration' is derived from the Latin word 'respire' meaning 'to breathe'. It leads

A: Lavoisier and Priestley did comprehensive work on properties of gases, their exchange and respiration in the 18th century. Lavoisier concluded that respirable air (O₂) is changed to fixed air (CO₂) in

A: 1. Breathing - Air movement into and out of lungs 2. Gaseous exchange in lungs - Exchange between alveoli and blood 3. Gas transport by blood - Oxygen and CO₂ transport 4. Gaseous exchange at tissue l

A: The circulatory system is a specialized transport system that carries materials (nutrients, gases, liquids) quickly and efficiently throughout the body. Multicellular organisms need it because simple

A: Pulse is the rhythmic pushing sensation felt when blood moves through arteries. It is caused by the heart pumping blood into arteries with each beat. The pulse rate equals the heart beat rate - both r

A: The heart has four chambers: 1) Right Atrium - receives deoxygenated blood from body parts, 2) Right Ventricle - pumps blood to lungs, 3) Left Atrium - receives oxygenated blood from lungs, 4) Left Ve