Biology
Photosynthesis in Plants
1,492 Questions
Photosynthesis is the biological process by which plants convert light energy into chemical energy. This page contains practice questions covering essential topics like chlorophyll, light reactions, and the pathways specific to plants. This material is crucial for medical entrance exams and academic assessments.
Chlorophyll and pigmentsLight reactionsCalvin cycleCAM plantsElectron transportPhotosynthesis factors
Photosynthesis in Plants Questions
-
annealing
-
ptosis
-
bleaching
-
quenching
C
Correct answer
Explanation
This option is correct because in the presence of ultraviolet rays, rhodopsin breaks down and this process is known as bleaching.
-
Only 1
-
Only 1 and 3
-
Only 2
-
Only 2 and 3
-
1, 2 and 3
B
Correct answer
Explanation
Plastocyanin is a copper containing protein involved in electron transfer.
Amicyanin is a type I copper protein that plays an integral role in electron transfer.
-
Eukaryotes
-
Chromoplasts
-
Prokaryotes
-
Leucoplasts
B
Correct answer
Explanation
Chromoplasts are colored plastids that contain various pigments. Chloroplasts are a specific type of chromoplast that contain the green pigment chlorophyll, which is essential for photosynthesis.
-
Only a and b
-
Only c and d
-
Only a, b and d
-
Only b, c and d
A
Correct answer
Explanation
Both a and b are correct. Phaseolus vulgaris and Daucs carota can fix carbon monoxide and can reduce CO pollution.
-
Mesophyll
-
Chloroplast
-
Spongy layer
-
Guard cells
-
Epidermis
B
Correct answer
Explanation
Cells in the leaves that contain chlorophyll
-
Chlorenchyma
-
Collenchyma
-
Aerenchyma
-
Phloem
A
Correct answer
Explanation
Chlorenchyma is a specialized type of parenchyma that contains a high concentration of chloroplasts. Its primary role is to perform photosynthesis, converting light energy into chemical energy. It is most commonly found in the green parts of plants, such as the mesophyll of leaves.
-
carbonates
-
carbon dioxide
-
elemental carbon
-
amino acids
B
Correct answer
Explanation
Plants obtain carbon primarily from atmospheric carbon dioxide (CO2) during photosynthesis. This carbon is fixed into organic molecules like glucose, which serve as the building blocks for the plant's structure and energy.
-
CO2 and O2
-
O2 and glucose
-
CO2 and water
-
Glucose and water
B
Correct answer
Explanation
Photosynthesis is the process by which plants use sunlight to convert water and carbon dioxide into glucose and oxygen. Glucose provides energy for the plant, while oxygen is released as a byproduct into the atmosphere.
-
ATP
-
Quinon
-
Chlorophyll
-
Cytochrome
-
Light
-
Red
-
Blue
-
Yellow
-
Green
-
Orange
B
Correct answer
Explanation
As the wavelength decreases, the energy increases. It is indirectly proportional. Blue light has maximum energy as compared to the other colours of light.
-
Sugar
-
Starch
-
Fats
-
Proteins
-
Vitamins
A
Correct answer
Explanation
Sugar is a simple form of carbohydrates as compared to starch, fats and proteins. It uses sugar as the first food substance.
-
Nucleus
-
Nucleolus
-
Cell membrane
-
Peptidoglycan layer
-
Outer membrane
C
Correct answer
Explanation
In photosynthetic bacteria, the proteins that gather light for photosynthesis are embedded within cell membranes.
-
Non-absorbed part of the light spectrum
-
Absorbed part of the light spectrum
-
Accessory pigments
-
Chemical components
-
Chemiosmotic potential
A
Correct answer
Explanation
The non-absorbed part of the light spectrum gives photosynthetic organisms their colour.
-
it gives out CO2 for dark reaction
-
it splits to provide hydrogen ions
-
it quickly absorbs CO2
-
it releases oxygen
-
it is inert
-
Forests
-
Marine photoplankton
-
Land mass
-
Crops
-
Green lands
B
Correct answer
Explanation
The plants which survive in water are known as photoplanktons. These plants take oxygen in the dissolved state.