Tag: photosynthesis

Quizzes (18) Questions (162)

Questions Related to photosynthesis

Multiple choice botany photosynthesis electron transport system modern concept of photosynthesis photosynthesis in higher plants
Electron Transport System (ETS) is located in mitochondrial

  1. Outer membrane

  2. Inter membrane space

  3. Inner membrane

  4. Matrix
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An electron transport system (ETS) or electron transport chain (ETC) is a series of coenzymes and cytochromes that take part in the passage of electrons from one carrier to another and to its ultimate acceptor. The various components of ETS are arranged in five kinds of complexes, arranged in a definite sequence in the inner mitochondrial membrane.

So the correct option is C.

Multiple choice botany photosynthesis electron transport system modern concept of photosynthesis photosynthesis in higher plants

Cyclic photophosphorylation takes place in the thylakoid which lacks:

  1. Electron transport system

  2. Enzyme FNR(ferredoxin NADP reductase )

  3. Lumen
  4. Photosystem with absorption peak $700nm$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cyclic Photophosphorylation is the process, in which systems (like prokaryotes), just accomplishes the ADP to ATP for immediate energy for the cells. This type of photophosphorylation usually occurs in the thylakoid membrane. So the correct option is ' Electron transport system'.

Multiple choice botany photosynthesis electron transport system modern concept of photosynthesis photosynthesis in higher plants

Consider the following events in the photochemical conversion of light energy into chemical energy by chlorophyll during photosynthesis.
a. Charge separation
b. Absorption of a quantum of energy
c. Ejection of electron
d. Transfer of light energy
The correct sequence of these events is?

  1. $4, 2, 1, 3$
  2. $4, 2, 3, 1$
  3. $2, 4, 1, 3$
  4. $2, 4, 3, 1$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The correct sequence is: 1. Absorption of light energy (2), 2. Transfer of light energy (4), 3. Charge separation (1), 4. Ejection of electron (3).

Multiple choice botany photosynthesis electron transport system modern concept of photosynthesis photosynthesis in higher plants
Which range of wavelength (in nm) is called photosynthetically active radiation (PAR)? 

  1. 100-390

  2. 390-430

  3. 400-700

  4. 760-10,000
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sunlight or solar radiations reaching the earth have wavelength between 300 nm (in the ultra volt rang) to 2600 nm (in the infa-red range). Part of the spectrum used in photosynthesis has a wavelength between 400-700 nm, it is called as photo synthetically active radiation (PAR). 

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments
Accessory photosynthetic pigments in most green plants are 
  1. Chlorophyll $a$
  2. Chlorophyll $b$

  3. Carotenoids and xanthophylls

  4. Both (b) and (c)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Chlorophyll a is found in almost all photosynthetic plants except bacteria it is called primary photosynthetic pigment because it performs primary reactions of photosynthesis which involve the conversion of light energy into chemical energy. other photosynthetic pigments like chlorophyll b, xanthophylls and carotenes are called accessory pigments. They absorb light energy of different wavelengths, broaden the spectrum of light absorption and hand over the energy to chlorophyll aq through electron spin resonance and also protect chlorophyll a from photo-oxidation.
So the correct option is 'both (b) and (c)'.
Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

Which of the following are water soluble pigments? 
A. Chlorophyll A
B. Chlorophyll B
C. Carotenids
D. Phycobilins 

  1. A and B (2)

  2. C and D

  3. Only D

  4. Only C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorophylls and carotenoids are lipid-soluble pigments located within the thylakoid membranes. Phycobilins, found in red algae and cyanobacteria, are water-soluble accessory pigments.

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

The photosynthetic pigment found in red algae is 

  1. Phycocyanin

  2. Carotene

  3. Phycoerythrin

  4. both (a) and (b)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Red algae (Rhodophyta) derive their characteristic red color and light-harvesting capability primarily from the water-soluble accessory pigment phycoerythrin.