Home
Class 10
PHYSICS
The diagram below shows a leaf that was ...

The diagram below shows a leaf that was covered by piece of black paper for a period of 3 days. After 3 days the paper was removed. On testing, it was found that the area under the black paper tested negative for starch and the rest tested positive for starch.

What was the experiment trying to test?

A

if plants make their own food

B

if light is required for plants to make food

C

if plants can respire in the absence of light

D

if plants can survive even in the absence of light

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PRACTICE PAPER 2022

    CBSE MODEL PAPER|Exercise Multiple Choice Questions|60 Videos
  • CASE STUDY QUESTIONS CLASS 10TH EXAM 2020-21

    CBSE MODEL PAPER|Exercise MCQs|239 Videos
  • QUESTION BANK 2021

    CBSE MODEL PAPER|Exercise QUESTIONS|60 Videos

Similar Questions

Explore conceptually related problems

A protion of destarched leaf of a potted plant was covered with a black strip of paper. The plant was then exposed to sunlight for six hours and then tested for starch. It was observed that:

Will a leaf taken from a potted plant kept in a dark room for a few days turn blue black when tested for starch? Give reasons for your answer.

Starch iodide paper is used to test for the presence of

A portion of each of four destarched leaves of a plant was covered with paper strips of various kinds. The plant was exposed to sunlight for 5 hours. Thereafter, the strips were removed and the leaves tested for starch in the covered portion. Which one of the four leaves gave the starch test in the covered portion?

A leaf of destarched healthy potted plant was covered by black paper strip as shown in Figure I, and kept in sunlight in the morning. In the evening, it was plucked off and tested for the presence of starch by using iodine solution. The observation is matched with the Figure No.:

In a experiment on two leaves - a variegated leaf or a leaf that was partially covered with black paper, and one that was exposed to light. Testing these leaves for what so that it becomes clear that photosynthesis occurred only in the green parts of the leaves in the presence of light.

The steps taken for setting up an experiment to demonstrate that 'light is necessary for photosynthesis', were as follows: * A strip of black paper was clipped on the leaf of a potted plant * The plant was kept in the sun for four hours * The strip was removed and the leaf was placed in boiling alcohol in a water bath * The leaf was washed and tested for starch The result was not as expected. Identify the step which had been missed out:

CBSE MODEL PAPER-PRACTICE PAPER 2022-Multiple Choice Questions
  1. A person can choke when a piece of food becomes lodged in the windpipe...

    Text Solution

    |

  2. Given below is a diagrammatic representation of a process taking place...

    Text Solution

    |

  3. The diagram below shows a leaf that was covered by piece of black pape...

    Text Solution

    |

  4. Which of these flowcharts correctly shows the circulation of blood in ...

    Text Solution

    |

  5. Two statements are given - one labelled Assertion (A) and the other la...

    Text Solution

    |

  6. When light from the Sun enters the Earth's atmosphere it gets refracte...

    Text Solution

    |

  7. An ant was in front of a convex lens as shown below Which of the ...

    Text Solution

    |

  8. A hunter sees a fish which is swimming in clear water as shown in the ...

    Text Solution

    |

  9. Shown below is a photograph of a convex lens. A small, bright spot i...

    Text Solution

    |

  10. A ray of light passes from solid medium 1 into solid medium 2. The ref...

    Text Solution

    |

  11. Two statements are given - one labelled Assertion (A) and the other la...

    Text Solution

    |

  12. Rajan takes the following two photographs of the text in a book, first...

    Text Solution

    |

  13. A beam of light consisting of three rays - P, Q, R is incident on a tr...

    Text Solution

    |

  14. The pH values of many common liquids are given in the table below. ...

    Text Solution

    |

  15. The pH values of many common liquids are given in the table below. ...

    Text Solution

    |

  16. The pH values of many common liquids are given in the table below. ...

    Text Solution

    |

  17. The pH values of many common liquids are given in the table below. ...

    Text Solution

    |

  18. William Harvey (1578–1657) was one of the early biologists who studied...

    Text Solution

    |

  19. William Harvey (1578–1657) was one of the early biologists who studied...

    Text Solution

    |

  20. William Harvey (1578–1657) was one of the early biologists who studied...

    Text Solution

    |