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Plantae

Identify the ...

Question

Identify the types of chlorophyll and stored food present in the members of class Phaeophyceae?

A

Starch

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B

Mannitol and laminarin

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C

Chlorophyll a and b

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D

Chlorophyll a and c

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Solution

The correct option is D Chlorophyll a and c
The presence of the pigment fucoxanthin is a characteristic feature of class Phaeophyceae. Alongwith fucoxanthin, members of this class also contain chlorophyll a and c.

These pigments help the plant to absorb sunlight and perform photosynthesis. During photosynthesis the excess glucose that is produced is stored in the form of mannitol and laminarin.

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Q. Consider the following statements regarding the major pigments and stored food in the different groups of algae and select the correct options given.
A) In Chlorophyceae, the stored food material is starch and the major pigments are chlorophyll a and b.
B) In Phaeophyceae, laminarin is the stored food and major pigments are chlorophyll a and b.
C) In Rhodophyceae, floridean starch is the stored food and the major pigments are chlorophyll a, d and phycoerythrin.

Q. Pick the option which includes all the correct statements from the following.

A. Chlorophyceae: Chlorophyll a and chlorophyll c pigments, starch-stored as food, asexual reproduction by zoospores.

B. Phaeophyceae: Fucoxanthin pigment, mannitol-stored as food, pear-shaped zoospores with 2, unequal sized apical flagella.

C. Rhodophyceae: Phycoerythrin pigment, floridean starch, reproduction by non-motile spore.

Q. Consider the following statements regarding the
major pigments and stored food in the different
groups of algae and choose the correct option

(i) In chlorophyceae, the stored food material is starch and the major pigments are chlorophyll a and d.

(ii) In phaeophyceae, laminarin is the stored food and major pigments are chlorophyll a and b.

(iii) In rhodophyceae, floridean starch is the stored food and the major pigments are chlorophyll a, d and phycoerythrin

Q. This class of algae has chlorophyll a, c and fucoxanthin as major pigments, uses mannitol and laminarin to store food and its cell wall has cellulose and algin. Identify the class of algae.

Q. This class of algae has its cell wall made up of cellulose and algin, with chlorophyll a, c and fucoxanthin as its pigments. The reserve food is mannitol and laminarin. Identify the class.

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