Biology

Photosynthesis in Plants

1,508 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

Multiple choice
  1. Gerontoplasts

  2. Leucoplasts

  3. Chromoplasts

  4. Chloroplasts

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Leucoplasts are required for monoterpene synthesis. Monoterpenes are terpenes, a class of organic compounds, produced by a variety of plants, particularly conifers. Leucoplasts contain droplets of lipid-like material at their margins leading to the belief that these organelles are involved in monoterpene synthesis. Leucoplasts contain enzymes of the monoterpene pathway, thus they might be involved in monoterpene synthesis.

Multiple choice
  1. Chromoplasts

  2. Leucoplasts

  3. Etioplasts

  4. Gerontoplasts

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Etioplasts are the chloroplasts that have not been exposed to light. They are usually found in flowering plants (Angiosperms) grown in the dark or if a plant is kept out of light for several days.

Multiple choice
  1. Chloroplasts

  2. Chromoplasts

  3. Leucoplasts

  4. Gerontoplasts

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chromoplasts serve as attractants and identifiers. They are responsible for distinctive colours of flowers and fruits and thus, serve as attractants for pollination and identifiers for several plants.

Multiple choice
  1. Fats

  2. Minerals

  3. Proteins

  4. Carbohydrates

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Photosynthesis produces glucose (a simple carbohydrate) as its primary product, using sunlight, water, and CO2. The glucose can be used immediately for energy, stored as starch, or converted to other carbohydrates like cellulose. While plants can synthesize fats, proteins, and absorb minerals, these are NOT direct products of photosynthesis. The overall reaction is: 6CO2 + 6H2O + light → C6H12O6 (glucose) + 6O2.

Multiple choice
  1. Mushroom

  2. Algae

  3. Amoeba

  4. Plasmodium

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Algae are photosynthetic organisms that contain chlorophyll and produce their own food using sunlight. Mushrooms are fungi, while amoeba and plasmodium are non-photosynthetic protists.

Multiple choice
  1. glyoxylate, glycolate, serine, glycine

  2. serine, glyoxylate, glycine, glycolate

  3. glycine, serine, glycolate, glyoxylate

  4. glycolate, glyoxylate, glycine, serine

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The right sequence in which such products emerge from ribulose bisphosphate in the photorespiration pathway, is Glycolate, glyoxylate, glycine, serine.

Multiple choice
  1. Thylakoid membrane

  2. Intrathylakoid space

  3. Stroma

  4. Chloroplast envelop

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Thylakoid membrane is the actual site for Photochemical is the photosynthesis’s primary reaction which occurs in chloroplast. It is done by a series of electron carriers with phosphorylation of ADP to ATP. Thylakoid membrane is the membrane-bound region inside the chloroplast and Cyanobacteria.

Multiple choice
  1. Bacteriochlorophyll; no O2 evolution; light absorption at greater wavelength than 700nm.

  2. Chlorophyll a and c; O2 evolution; light absorption at greater wavelength than 700nm.

  3. Bacteriochlorophyll; no O2 evolution; light absorption at shorter wavelength than 700nm.

  4. Chlorophyll a; no O2 evolution; light absorption at the wavelengths between 400-500nm.

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bacteriochlorophyll; no O2 evolution; light absorption at greater wavelength than 700nm is appropriate to the bacterial photosynthesis.

Multiple choice
  1. b, d, c, a

  2. d, a, b, c

  3. d, b, c, a

  4. a, b, c, d

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Here d, b, c, a is the right sequence of such intermediate compounds as they produce in C4 –dicarboxylic acid pathway- Oxaloacetic acid, malic acid, pyruvic acid, Phosphoenol pyruvate following the PEP-carboxylation reaction.

Multiple choice
  1. 4 H atoms in 1 of its pyrrole ring

  2. 4 H atoms in 2 of its pyrrole ring

  3. 2 H atoms in 1 of its pyrrole ring

  4. 2 H atoms in 2 of its pyrrole ring

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Protohrolphyll is grenn Mg containing pigment which is found in etiolated leaves. Chlorophyll is green pigment present in Cyanobacteria & chloroplast of plants. Protochlorophyll varies from chlorophyll in lacking 2 H atoms in 1 of its pyrrole ring

Multiple choice
  1. Solar energy is converted into heat energy.

  2. Chemical energy is converted into solar energy.

  3. Solar energy is converted into electrical energy.

  4. Solar energy is converted into chemical energy.

  5. Solar energy is converted into mechanical energy.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the process of photosynthesis, the solar energy is converted into chemical energy.

Multiple choice
  1. Chloroplast

  2. Chromoplast

  3. Gerontoplast

  4. Leucoplast

  5. Amyloplast

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A gerontoplast is a plastid found in formerly green tissues that are currently senescing. The function of the gerontoplast in association with other organelles in an aging cell is clearly to affect a controlled dismantling of the photosynthetic apparatus during senescence.