Download PDF
Free download in PDF Bioenergetics Objective Type Questions & Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(21)
Thylakoids in chloroplasts are stacked into
[A]
Grana
[B]
Stroma
[C]
Nucleus
[D]
None of these
(22)
Light reaction takes place on/in
[A]
Thylakoid
[B]
Storma
[C]
Chloroplast
[D]
Grana
(23)
Which is the correct order of energy transfer from assessory pigments to main photosynthetic pigment?
[A]
Carotenoids ? Chlorophyll a ? Chlorophyll
[B]
Chlorophyll b ? Carotenoids ? Chlorophyll a.
[C]
Carotenoids ? Chlorophyll b ? Chlorophyll a.
[D]
Chlorophyll a ? Chlorophyll b ? Carotenoids.
Answer: Carotenoids ? Chlorophyll b ? Chlorophyll a.
(24)
Which of the following pigment is Blue- green in colour:
[A]
Chlorophyll a
[B]
Chlorophyll b.
[C]
Chlorophyll c
[D]
Chlorophyll d.
(25)
Molecular formula of chlorophyll 'a' molecule is:
[A]
C55H72O5N4Mg
[B]
C55H70O6N4Mg
[C]
C50H72O6N4Mg
[D]
C55H70O5N4Mg
(26)
Which of the following statement about the head of a chlorophyll molecule is incorrect:
[A]
It is a porphyrin ring or tetrapyrrole ring structure
[B]
It is flat, square and light absorbing
[C]
Composed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen.
[D]
It is hydrophobic
Answer: It is hydrophobic
(27)
Chlorophyll is insoluble in:
[A]
Carbon tetrachloride
[B]
Alcohol
[C]
Organic solvents
[D]
Water
(28)
Which of the light is mainly absorbed by the plants:
[A]
Orange
[B]
Red
[C]
Green
[D]
Both A and B
(29)
Which of the following light is least absorbed by the plants:
[A]
Orange
[B]
Red
[C]
Blue
[D]
Green
(30)
Visible light used in photosynthesis ranges from:
[A]
300 - 700 nm in wavelength
[B]
350 - 750 nm in wavelength
[C]
380 - 750 nm in wavelength
[D]
390 - 790 nm in wavelength.
Answer: 380 - 750 nm in wavelength
31
Van neil hypothesis about the production of oxygen during phosynthesis was based on the study and investigations on
[A]
Bacteria
[B]
Algae
[C]
Protenema
[D]
Cyanobacteria
32
The point at which there is no net exchange of gases between leaves and atmosphere is known as
[A]
Neutral point
[B]
Compensation point
[C]
Parallel point
[D]
Competitive point
Answer: Compensation point
33
Net yield of H2O in Photosynthesis is
[A]
1 molecule
[B]
6 molecules
[C]
3 molecules
[D]
0 molecule
34
Of the following which one is not an energy releasing process?
[A]
Glycolysis
[B]
Respiration
[C]
Photosynthesis
[D]
Kreb's cycle
35
The organisms able to use sunlight directly as a source of energy are
[A]
Plants
[B]
Animals
[C]
Omnivores
[D]
Fungi
36
Quantitative study of energy relationships in biological systems obeys.
[A]
Bioenergetics
[B]
Laws of thermodynamics
[C]
Laws of thermo chemistry
[D]
Laws of chemical energetic
Answer: Laws of thermodynamics
37
Which of the following is a compensation point:
[A]
Leaves respire and utilize O2 and release CO2.
[B]
Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants.
[C]
Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2.
[D]
Rate of respiration becomes more than rate of photosynthesis.
Answer: Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants.
38
At which times there is no net gaseous exchange between leaves and the atmosphere.
[A]
Day time.
[B]
Night time.
[C]
Dawn & Dusk.
[D]
Mid night.
39
C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents:
[A]
Photosynthesis
[B]
Aerobic respiration
[C]
Anaerobic respiration
[D]
Respiration
Answer: Aerobic respiration
40
Photosynthesis is process in which ________ compounds of carbon (CO2) and hydrogen (H2O) are reduced to carbohydrate like (glucose) using light energy.
[A]
Organic
[B]
Energy rich
[C]
Energy poor
[D]
Reduced
Please share this page