Test: Photosynthesis


5 Questions MCQ Test Biology Class 11 | Test: Photosynthesis


Description
This mock test of Test: Photosynthesis for NEET helps you for every NEET entrance exam. This contains 5 Multiple Choice Questions for NEET Test: Photosynthesis (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Photosynthesis quiz give you a good mix of easy questions and tough questions. NEET students definitely take this Test: Photosynthesis exercise for a better result in the exam. You can find other Test: Photosynthesis extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

Photosynthetically active radiation (PAR) represents which of the following range of wavelength?

Solution:
  • Photosynthetically Active Radiation (PAR) of solar radiation is a visible region.
  • It consists of radiations having wavelength between 400 to 700 nm.
  • Green plants use this wavelength in the process of manufacture food, i.e. photosynthesis.
QUESTION: 2

Who described the first action spectrum for photosynthesis?

Solution:
  • Engelmann used a prism to split light into its spectral components, and then illuminated a green alga, Cladophora, placed in a suspension of aerobic bacteria. The bacteria were used to detect the sites of oxygen evolution. 
  • He observed that bacteria mainly accumulated in the region of blue and red light of the split spectrum, thus giving the first action spectrum of photosynthesis.
QUESTION: 3

In the half-leaf experiment of photosynthesis, KOH solution is used because​:

Solution:

KOH (Potassium Hydroxide) absorbs carbon dioxide. The leaf inside the bottle containing KOH solution does not become blue-black when compared with the leaf which is exposed to atmospheric air. This shows that carbon dioxide is necessary for photosynthesis.

QUESTION: 4

Who demonstrated the importance of sunlight for the process of photosynthesis?

Solution:
  • Jan Ingenhousz is best known for his discovery of photosynthesis, the process by which green plants absorb carbon dioxide in the presence of sunlight and release oxygen.
  • Through an ingenious series of experiments, Ingenhousz proved that plant leaves need sunlight rather than heat in order to produce oxygen.
QUESTION: 5

In the overall process of photosynthesis, the total number of CO2, water, sugar and O2 molecules utilised and produced is​:

Solution:


(Total molecules utilized are 18 and produced are 13. Therefore total is 31) 

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