Question:

Choose the correct order of colours with respect to pigments ? chlorophyll, phycoerythrin and fucoxanthin

KEAM

Updated On: Jun 23, 2023

Green, Red and Brown
Brown, Green and Red
Red, Green and Brown
Green, Brown and Re

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The Correct Option is A

Solution and Explanation

Chlorophyll is a class of pigments found in all photosynthetic organisms. The most important members are chlorophyll a and chlorophyll b which occur in all land plants and are responsible for their green colour. Phycoerythrin is an accessory photosynthetic pigment occurring mainly in the red algae and cyanobacteria. It is a phycobiliprotein, in which the pigmented prosthetic group is phycoerythrobilin, which gives phycoerythrin its red colour.
Fucoxanthin is the major carotenoid brown pigment present along with chlorophyll, in the brown algae.

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LIST I Classes of world vegetation on the basis of temperature	LIST II Example
A	Megatherms	I	Alpine vegetation
B	Mesotherms	II	tropical rain forest
C	Microtherms	III	Coniferous forest
D	Hekistotherms	IV	Tropical deciduous forest

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Concepts Used:

Plant Kingdom

The Plant Kingdom comprises all the plants that have some shared characteristics. These are bacteria (prokaryotes), photosynthetic plants, fungi, and several non-photosynthetic plants.

Read Also: Two Kingdom Classification

Several features of Kingdom Plantae are as follows:

They are stationary. They are static and usually remain in one place only.
They have branches that expanded and green leaves due to the presence of chlorophyll.
They are an autotrophic mode of nutrition that simply means they prepare their food with the help of water, sunlight and carbon dioxide. It is further known as self-nutrition.
They indulge in photosynthesis during the day and therefore more carbon dioxide is needed during the day and at night it is released.
They secure their food in the form of starch-like algae.
They have an inelastic wall around their cell known as a cell wall comprised of cellulose.
There is an absence of the nervous system and excretory system.
Reproduction is entirely dependent on air, insects and water. Asexual and vegetative method of reproduction is noticed or detected.
The non-photosynthetic plants acquire their food through parasitism, i.e through their host like Indian pipe.

Read More: Classification of Plants

Column-I (Plant groups)		Column-II (Examples)
1.	Bryophyta	p.	Pinus
2.	Gymnosperm	q.	Adiantum
3.	Algae	r.	Sphagnum
4.	Pteridophyta	s.	Ectocarpus