This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
ScanSolve AI Answer
Hey Santosh — ready when you are. Q1 a) Fill in the blanks 1) Cardiac muscles are involuntary. 2) Oxygen is a reactant in respiration. 3) A thermometer is used to measure temperature. 4) RBCs of the blood contain hemoglobin as iron compound. 5) pH of oxygenated blood is alkaline. Q1 b) Match the pairs 1) heart beats - e) 72 per min 2) curd - a) lactic acid 3) blood donation - d) 350 ml 4) lemon - c) citric acid 5) RBC - b) 50-60 lakh/mm³ Q1 c) Find odd one out 1) Trachea, alveoli, diaphragm, capillaries: Capillaries (others are parts of the respiratory system). 2) A, O, K, AB, B: K (others are blood groups). 3) Blood plasma, platelets, blood transfusion, blood corpuscles: Blood transfusion (others are components of blood). 4) DNA, Ribosomes, chlorophyll: Chlorophyll (others are related to cell structures/genetic material). 5) Nucleolus, mitochondria, plastids: Nucleolus (others are organelles with their own genetic material or involved in energy/storage). Q2 a) State true or false 1) Salt are neutral: True 2) Joule is the unit of heat: True 3) metal corrodes due to salts: True 4) atom of solid are free: False 5) table salt is acidic: False Q2 b) Who am I? 1) Leaves are green because of me. -> Chlorophyll 2) I am ATP producing factory. -> Mitochondria 3) I am chemical factory of the cell. -> Endoplasmic Reticulum 4) I support the cell, but I am not cell wall. I have a body resembling net. -> Cell membrane 5) I am single layered, but maintain cellular osmotic pressure. -> Cell membrane Q2 c) Draw neat and labeled diagram (any two) This question requires drawing diagrams, which cannot be provided in this format. You would need to draw: 1) Respiratory system 2) Calorimeter 3) Nucleus Q3 Write chemical names from given formulae. 1) HCl: Hydrogen chloride (or Hydrochloric acid) 2) NaOH: Sodium hydroxide Q4 Answer the following questions (any five) 1) Which acid is used for getting chloride salt? Hydrochloric acid (HCl). 2) Which substance are produced by neutralization reaction? Salt and Water. 3) Write the uses of PVC. PVC (Polyvinyl chloride) is used for pipes, window frames, cable insulation, flooring, and medical devices. 4) Give the reason - Why human blood is red coloured. Human blood is red due to the presence of hemoglobin, an iron-containing protein found in red blood cells. 5) Definition of acid & Base. Acid: A substance that produces hydrogen ions (H^+) when dissolved in water. Base: A substance that produces hydroxide ions (OH^-) when dissolved in water. 6) Write short note on uses of plastic. Plastics are versatile materials used in packaging, construction, automotive parts, electronics, medical devices, and textiles due to their durability, light weight, and low cost. 7) Distinguish between man made and natural material. Man-made materials are synthesized or processed by humans (e.g., plastic, steel). Natural materials are found in nature and used with minimal processing (e.g., wood, cotton, stone). 8) How do star form. Stars form from the gravitational collapse of dense regions within large clouds of gas and dust (nebulae). Q5 Answer in brief (any one) 1) Classify following substance into acidic basic and neutral group: a) HCl: Acidic b) NaCl: Neutral c) MgO: Basic d) KCl: Neutral e) H₂SO₄: Acidic f) H₂O: Neutral g) HNO₃: Acidic h) CaO: Basic 2) Give my information: 1) Ecosystem An ecosystem is a community of living organisms (biotic components) interacting with their non-living environment (abiotic components) as a functional unit. Send me the next one 📸