Chapter 15 Biodiversity, Conservation and Environmental Issues 1. Multiple choice questions Question 1.Observe the graph and select correct option. (a) Line A represents, S = CA² (b) Line B represents,…
Chapter 14 Ecosystems and Energy Flow 1. Multiple choice questions Question 1.Which one of the following has the largest population in a food chain? (a) Producers (b) Primary consumers (c)…
Chapter 13 Organisms and Populations 1. Multiple choice questions Question 1.Which factor of an ecosystem includes plants, animals and microorganisms? (a) Biotic factor (b) Abiotic factor (c) Direct factor (d)…
Chapter 12 Biotechnology 1. Multiple choice questions Question 1.MU The bacterium which causes a plant disease called crown gall is ……………….. (a) Helicobacter pylori (b) Agrobacterium tumifaciens (c) Thermophilus aquaticus…
Chapter 11 Enhancement of Food Production 1. Multiple choice questions Question 1.Antibiotic Chloromycetin is obtained from …………………. (a) Streptomyces erythreus (b) Penicillium chrysogenum (c) Streptomyces venezuelae (d) Streptomyces griseus Answer:…
Chapter 10 Human Health and Diseases 1. Multiple Choice Questions Question 1.Which of the following is NOT caused by unsterilized needles? (a) Elephantiasis (b) AIDS (e) Malaria (d) Hepatitis Answer:…
Chapter 9 Control and Co-ordination 1. Multiple choice questions Question 1.The nervous system of mammals uses both electrical and chemical means to send signals via neurons. Which part of the…
Chapter 8 Respiration and Circulation 1. Multiple choice questions Question 1.The muscular structure that separates the thoracic and abdominal cavity is ………………….. (a) pleura (b) diaphragm (c) trachea (d) epithelium…
Chapter 7 Plant Growth and Mineral Nutrition 1. Multiple choice questions Question 1.Which of the hormone can replace vernalization ? (a) Auxin (b) Cytokinin (c) Gibberellins (d) Ethylene Answer: (c)…
Chapter 6 Plant Water Relation 1. Multiple Choice Questions Question 1.In soil, water available for absorption by root is …………….. (a) gravitational water (b) capillary water (c) hygroscopic water (d)…