Everyday Science · Botany (Plant Biology) · page 18 of 19

Photosynthesis & Plant MCQs with Answers

Includes 17 past paper MCQs (marked).

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Photosynthesis & Plant Nutrition MCQs (171–180)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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171.
Autotrophic mode of nutrition in organism depends upon ?
Correct Answer: A. Photosynthesis
One-liner
Autotrophic mode of nutrition depends upon Photosynthesis, the process by which organisms produce their own food using sunlight, water, and carbon dioxide.
172.
Phloem transport of sucrose can be described as going from "source to sink." Which of the following would NOT normally function as a sink?
Correct Answer: C. Mature leaf
One-liner
A mature leaf would NOT normally function as a sink because it is typically a source, producing sucrose via photosynthesis.
173.
In chloroplast, different pigments absorb light of different _?
Correct Answer: C. Wavelengths
One-liner
In chloroplast, different pigments absorb light of different wavelengths.
174.
Which nutrient element is more available at acidic soil as compared to neutral organic soil?
Correct Answer: C. Boron
One-liner
Boron is more available in acidic soils compared to neutral or alkaline organic soils.
175.
Which of the following is an example of an autotrophic organism?
Correct Answer: D. Algae
One-liner
Algae are autotrophic organisms because they can produce their own food through photosynthesis.
176.
Chlorophyll 'a' is characterized by the side group of _?
Correct Answer: D. Methyl
One-liner
Chlorophyll 'a' is characterized by a methyl (–CH₃) side group attached to the porphyrin ring.
177.
Which pigment is responsible for the red coloration of plants in autumn?
Correct Answer: D. Carotenoid
One-liner
The red coloration of plants in autumn is due to carotenoid pigments, which become visible when chlorophyll breaks down.
178.
Chlorophyll is present in?
Correct Answer: A. Algae
One-liner
Chlorophyll is present in algae, which are photosynthetic organisms capable of producing their own food using sunlight.
179.
Past Paper MCQ
What is the basic photosynthetic pigment found in plants?
Correct Answer: A. Chlorophyll-a
One-liner
The basic photosynthetic pigment found in plants is Chlorophyll-a.
180.
Fundamental molecule produced during photosynthesis is ?
Correct Answer: D. Glucose
One-liner
The fundamental molecule produced during photosynthesis is Glucose.

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Photosynthesis & Plant MCQs with Answers

Photosynthesis & Plant Nutrition MCQs (171–180)

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