Biological Science Important Questions
High-frequency questions from BSE Telangana Class 10 Biological Science public exam — diagram labelling, life processes, heredity, and ecology questions that appear almost every year.
Diagrams — Always in the Paper (4 marks each)
- 1Draw a neat diagram of a nephron and label: glomerulus, Bowman's capsule, proximal tubule, loop of Henle, collecting duct
- 2Draw a neuron and label: cell body, dendrites, axon, myelin sheath, axon terminals
- 3Draw the human heart in vertical section and label: right atrium, left atrium, right ventricle, left ventricle, aorta, pulmonary artery, vena cava
- 4Draw a cross-section of a leaf showing stomata, guard cells, mesophyll, xylem, phloem
- 5Draw a diagram showing the reflex arc with labels at each step
Life Processes — 4 to 5 Mark Questions
- 1Explain the process of photosynthesis — equation, conditions required, and products
- 2Describe aerobic respiration with the overall equation and where each stage takes place
- 3Explain the double circulation in humans — why it is called double circulation
- 4How does the kidney filter blood? Describe the process of urine formation in 4 steps
- 5Compare photosynthesis and respiration — inputs, outputs, location, and energy change
Control and Coordination — 2 to 5 Mark Questions
- 1What is a reflex action? Give one example and explain the reflex arc
- 2Explain the functions of any four hormones secreted by the human endocrine glands
- 3How do plants respond to light (phototropism) and gravity (geotropism)? Give one example each
- 4Distinguish between the nervous system and the endocrine system — table of differences
- 5What happens at a synapse? Explain how a nerve impulse crosses from one neuron to the next
Reproduction and Heredity — 4 to 5 Mark Questions
- 1Explain the process of pollination and fertilisation in flowering plants
- 2What is Mendel's Law of Segregation? Explain with a monohybrid cross for tall and dwarf pea plants
- 3Distinguish between sexual and asexual reproduction — 3 differences with examples
- 4Explain the formation of a zygote and how sex is determined in humans
- 5What is DNA? Explain how genes control the characteristics of an organism
Ecology and Environment — 2 to 4 Mark Questions
- 1Define food chain and food web. Give one example of each from a grassland ecosystem
- 2Explain the causes and effects of ozone layer depletion
- 3What is biodiversity? Why is it important? Give 2 threats to biodiversity in India
- 4Distinguish between biotic and abiotic components of an ecosystem with examples
- 5What is the greenhouse effect? Name 3 greenhouse gases and explain how they cause global warming