Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

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.

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.