NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM PROTISTA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following statements is true about green algae?
A
They are non-photosynthetic
B
Their main energy storage is starch
C
They are all multicellular organisms
D
They perform asexual reproduction only
Explanation: 

Detailed explanation-1: -As in land plants, the major carbohydrate storage product of the green algae is usually starch in the form of amylose or amylopectin. These starches are polysaccharides in which the monomer, or fundamental unit, is glucose.

Detailed explanation-2: -Green algae have chloroplasts that contain chlorophyll a and b, giving them a bright green color, as well as the accessory pigments beta carotene (red-orange) and xanthophylls (yellow) in stacked thylakoids. The cell walls of green algae usually contain cellulose, and they store carbohydrate in the form of starch.

Detailed explanation-3: -Red algae (Rhodophyceae) are photosynthetic eukaryotes that accumulate starch granules outside of their plastids. The starch granules from red algae (floridean starch) show structural similarities with higher plant starch granules but lack amylose.

Detailed explanation-4: -Both plants and green store carbohydrates as starch: Algae store food material as starch in the form of granular bodies called pyrenoids. Plants store food material as starch in the chloroplast.

There is 1 question to complete.