Tag: photosynthesis

Quizzes (18) Questions (162)

Questions Related to photosynthesis

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

The empirical formula for chlorophyll 'a' is ___________________.

  1. $C _{35}H _{72}O _{5}N _{4}Mg$
  2. $C _{35}H _{70}O _{6}N _{4}Mg$
  3. $C _{55}H _{72}O _{5}N _{4}Mg$
  4. $C _{54}H _{70}O _{6}N _{4}Mg$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorophyll a is bluish-green with empirical formula of C55H72O5N4Mg

So the correct option is C.

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

Reserve food material in plants is in form is _______.

  1. Cellulose

  2. Starch

  3. Pectin

  4. Sucrose
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants is the kingdom of organisms that possess chlorophyll. They synthesis their food by the process called photosynthesis. Starch is synthesized during the process of photosynthesis and stored as reserved food material.

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

Bacteriochlorophyll differs from chlorophyll 'a' in having

  1. One pyrole ring with one hydrogen

  2. One pyrole ring with two hydrogen

  3. One pyrole ring with three hydrogen

  4. One pyrole ring with four hydrogen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Purple sulphur bacteria and non-sulphur bacteria contain bacteria-chlorophyll,which is having 2H-atoms more than chl.a and it absorb 850-950 nm(infra-red) wavelength of light.

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

In which one of the following sets of plants is the endosperm chlorophyll us?

  1. Rosa, Prunus

  2. Crinum, Raphanus

  3. Arachis, Cicer

  4. Linum, Olea
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In some plants, the endosperm contains chlorophyll and is photosynthetic. Examples include species like Rosa and Prunus.

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

Which of these is a type of phycobilin pigments?

  1. Phycocyanin

  2. Allophycocyanin

  3. Phycoerythrin

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Phycobilins are open tetrapyrroles which neither contain magnesium nor phytol. Phycobilins are water soluble. The pigments are of two types-blue (phycocyanin, allophycocyanin) and red (phycoerythrin). The pigments are useful in chromatic adaptations. They are important accessory pigments of blue-green algae, cryptomonas and red algae. 

so the correct answer is 'All of the above'.

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

Consider the following pigments.
a. Chlorophyll a
b. Chlorophyll b
c. Chlorophyll c
d. Carotenes
e. Biliproteins
f. Xanthophylls
The characteristic photosynthetic pigments present in chlorophyceae would include.

  1. $1, 2, 3$ and $4$
  2. $1, 3, 4$ and $5$
  3. $2, 3, 5$ and $6$
  4. $1, 2, 4$ and $6$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chlorophyceae (green algae) typically contain chlorophyll a, chlorophyll b, carotenes, and xanthophylls.

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

Energy transfer in photosynthesis occurs as

  1. Phycoerythrin$\rightarrow $Phycocyanin$\rightarrow $Carotenoid$\rightarrow $Chlorophyll a
  2. Chlorophyll b$\rightarrow $Carotenoid$\rightarrow $Phycoerthrin$\rightarrow $Chlorophyll a
  3. Phycocyanin$\rightarrow $Phycoerythrin$\rightarrow $Cartenoid$\rightarrow $Chlorophyll a
  4. Chlorophyll$\rightarrow $Cartenoid$\rightarrow $Phycocyanin$\rightarrow $Chlorophyll a
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

During photosynthesis, light energy is captured by accessory pigments and transferred efficiently toward the reaction center chlorophyll a. The correct energy transfer sequence is phycoerythrin to phycocyanin to carotenoids to chlorophyll a.

Multiple choice botany photosynthesis types of chlorophyll pigments photosynthetic pigments

Major Pigments in Phaeophycae :

  1. Chlorophyll $a$
  2. Chlorophyll $c$

  3. Fucoxanthin

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Phaeophyceae, or brown algae, contain chlorophyll a, chlorophyll c, and carotenoids such as fucoxanthin, which give them their characteristic brown color. Since all the listed pigments are indeed found in brown algae, the correct choice is that all of the above are major pigments.

Multiple choice botany photosynthesis action spectrum and absorption spectrum spectrum of electromagnetic radiation chloroplast and pigments of photosynthesis site of photosynthesis

Which of the is the range for UV in spectroscopy?

  1. 400-700nm

  2. 500-800nm

  3. 200-300nm

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

UV spectroscopy (400-700nm) is a type of absorption spectroscopy in which light of ultra-violet region is absorbed by the molecule resulting in the excitation of the electrons from the ground state to higher energy state. It obeys the Beer-Lambert law that states that when a beam of monochromatic light passes through a solution of an absorbing substance, the rate of decrease of intensity of radiation with the thickness of the absorbing solution is directly proportional to the incident radiation as well as the concentration of the solution.

So, the correct answer is '400-700nm'