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Andhra Pradesh SSC (Class 10) Life Processes in Living Organisms Part 1 — practice questions — page 3

Explore 110 free Life Processes in Living Organisms Part 1 questions in Andhra Pradesh SSC (Class 10) Science and Technology. Open each question or exercise to read its content, reference answers and available explanation.

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Life Processes in Living Organisms Part 1 questions and exercises with answers

Showing questions 61–90 of 110.

Photosynthesis takes place mainly in which organelle?Read the answer and worked solution →Which colour of light is absorbed least by chlorophyll?Read the answer and worked solution →The light reaction of photosynthesis happens in theRead the answer and worked solution →Which factor below is a limiting factor for photosynthesis?Read the answer and worked solution →After destarching, a partly-covered leaf in sunlight tested with iodine showsRead the answer and worked solution →Which part of the chloroplast carries out the dark reaction (Calvin cycle)?Read the answer and worked solution →Water is split during theRead the answer and worked solution →Which two molecules link the light reaction to the dark reaction?Read the answer and worked solution →Beyond the saturation point of light intensity, photosynthesisRead the answer and worked solution →Why is photosynthesis the basis of food chains?Read the answer and worked solution →An aquatic plant in bright light produces visible bubbles. This provesRead the answer and worked solution →In the Calvin cycle the immediate carbon-acceptor isRead the answer and worked solution →Besides light and CO2, what factor can slow photosynthesis if too low?Read the answer and worked solution →Iodine is used in the starch test because in presence of starch itRead the answer and worked solution →A variegated leaf shows starch only in the green parts becauseRead the answer and worked solution →Blood is classified as which kind of tissue?Read the answer and worked solution →An average adult human has approximatelyRead the answer and worked solution →The pH of human blood lies betweenRead the answer and worked solution →Blood circulates through closed vessels in humans. This system is calledRead the answer and worked solution →Which formed elements of blood help in clotting?Read the answer and worked solution →The protein in RBC that carries oxygen isRead the answer and worked solution →Tissue fluid forms when blood plasmaRead the answer and worked solution →Which type of blood vessel carries oxygen-rich blood away from the heart?Read the answer and worked solution →The ABO blood group system depends on which feature of blood?Read the answer and worked solution →During systoleRead the answer and worked solution →Double circulation in mammals means that blood passes through the heartRead the answer and worked solution →Blood pressure of a healthy adult is typically aboutRead the answer and worked solution →Which blood vessel carries deoxygenated blood from the body back to the heart?Read the answer and worked solution →Which blood vessel carries oxygenated blood from the lungs back to the heart?Read the answer and worked solution →The hepatic portal system carries blood from theRead the answer and worked solution →

Worked practice questions

Photosynthesis takes place mainly in which organelle?

  1. Chloroplast with internal thylakoids
  2. Mitochondrion with folded cristae
  3. Lysosome with digestive enzymes
  4. Endoplasmic reticulum with ribosomes
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Correct answer: A. Chloroplast with internal thylakoids

1. Photosynthesis pigments sit in a special organelle. 2. Plant cells contain chloroplasts loaded with chlorophyll. 3. Thylakoid membranes inside house the light reactions. 4. So chloroplasts are the photosynthesis site. _Source: Selina Concise Biology Class 10, Ch on Photosynthesis (Mistral OCR'd PDF), section on chloroplast_

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Which colour of light is absorbed least by chlorophyll?

  1. Red light, used most efficiently
  2. Green light, which is mostly reflected
  3. Blue light, used most efficiently
  4. Violet light, used most efficiently
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Correct answer: B. Green light, which is mostly reflected

1. Chlorophyll absorbs red and blue strongly. 2. Green light is largely reflected and transmitted. 3. The reflection is why leaves look green. 4. So green is the least absorbed colour. _Source: Selina Concise Biology Class 10, Ch on Photosynthesis (Mistral OCR'd PDF), section on absorption spectrum_

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The light reaction of photosynthesis happens in the

  1. Cytoplasm just outside the chloroplast
  2. Stroma fluid around the thylakoids
  3. Outer mitochondrial membrane in cells
  4. Thylakoid membrane of chloroplasts
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Correct answer: D. Thylakoid membrane of chloroplasts

1. Chloroplasts contain stacks of disc-like thylakoids. 2. Light-trapping chlorophyll sits in thylakoid membranes. 3. So energy capture and water splitting happen there. 4. Hence option A is correct. _Source: Selina Concise Biology Class 10, Ch on Photosynthesis (Mistral OCR'd PDF), section on light reaction site_

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