Tag: botany

Questions Related to botany

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

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  1. A and B (2)

  2. C and D

  3. Only D

  4. Only C

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Correct Option: A

The chlorophyll pigment found in green sulphur bacteria is

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  1. Bacteriochlorophyll

  2. Bacterioviridin

  3. Phycocyanin

  4. Phycoerythrin

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Correct Option: A

The photosynthetic pigment found in red algae is 

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  1. Phycocyanin

  2. Carotene

  3. Phycoerythrin

  4. both (a) and (b)

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Correct Option: A

How many chlorophyll molecules are found in a quantasome?

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  1. $295$

  2. $500$

  3. $230$

  4. $100$

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Correct Option: A

The empirical formula for chlorophyll 'a' is ___________________.

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  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. $C _{54}H _{70}O _{6}N _{4}Mg$

Show answer
Correct Option: C
Explanation:

Chlorophyll a is bluish-green with empirical formula of C55H72O5N4Mg

So the correct option is C.

Reserve food material in plants is in form is _______.

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  1. Cellulose

  2. Starch

  3. Pectin

  4. Sucrose

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Correct Option: B
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.

Bacteriochlorophyll differs from chlorophyll 'a' in having

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  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

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Correct Option: B
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.

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

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  1. Rosa, Prunus

  2. Crinum, Raphanus

  3. Arachis, Cicer

  4. Linum, Olea

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Correct Option: A

Which of these is a type of phycobilin pigments?

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  1. Phycocyanin

  2. Allophycocyanin

  3. Phycoerythrin

  4. All of the above

Show answer
Correct Option: D
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'.

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.

botany photosynthesis types of chlorophyll pigments photosynthetic pigments

  1. $1, 2, 3$ and $4$

  2. $1, 3, 4$ and $5$

  3. $2, 3, 5$ and $6$

  4. $1, 2, 4$ and $6$

Show answer
Correct Option: A