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 (Azotobacter). 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.
One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that…
NEET UG 2019 — Botany Photosynthesis in Higher Plants
2019mcqeasy
One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of
Official previous-year question
Held on 30 Apr 2019 · Verified 9 Jul 2026.
Options
- A
violet and green light
- B
indigo and green light
- C
orange and yellow light
- D
blue and red light
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NEET UG Photosynthesis in Higher Plants in other years
Photosynthesis in Higher Plants 2025Photosynthesis in Higher Plants 2024Photosynthesis in Higher Plants 2023Photosynthesis in Higher Plants 2022Photosynthesis in Higher Plants 2021Photosynthesis in Higher Plants 2020Photosynthesis in Higher Plants 2018Photosynthesis in Higher Plants 2017Photosynthesis in Higher Plants 2016Photosynthesis in Higher Plants 2015Photosynthesis in Higher Plants 2013Photosynthesis in Higher Plants 2012
More NEET UG Photosynthesis in Higher Plants questions
Match List I with List II: $\begin{array}{|l|l|l|l|}\hline & \text{List - I} & & \text{List - II} \\\hline \text{A}. & \text{Chlorophyll a} & \text{(i)} & \text{Yellow-green} \\\hline \text{B.} & \text{Chlorophyll b} & \text{(ii)} & \text{Yellow} \\\hline \text{C.} & \text{Xanthophylls} & \text{(iii)} & \text{Blue-green} \\\hline \text{D.} & \text{Carotenoids} & \text{(iv)} & \text{Yellow to Yellow-orange} \\\hline\end{array}$ Choose the option with all correct matches.
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Which of the following statements about RuBisCO is true?
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Observe the given figure. Identify the different stages labelled with alphabets by selecting the correct option. 
2024medium
How many molecules of ATP and NADPH are required for every molecule of $\mathrm{CO}_2$ fixed in the Calvin cycle?
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Given below are two statements: Statement I: In $\mathrm{C}_3$ plants, some $\mathrm{O}_2$ binds to RuBisCO, hence $\mathrm{CO}_2$ fixation is decreased. Statement II: In $\mathrm{C}_4$ plants, mesophyll cells show very little photorespiration while bundle sheath cells do not show photorespiration. In the light of the above statements, choose the correct answer from the options given below:
2024medium
Other Botany topics for NEET UG
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