Question

Match column I with column II and select the correct option from the given codes.

Column I	Column II
A. Presence of $3-4$ storeyed plant crowns in a forest	(i) Blue green algae
B. A biome having grasses with scattered trees	(ii) Stratification
C. Man made ecosystems	(iii) Savannah
D. Pioneer in hydrosere	(iv) Dam

• A. A-(ii), B-(iii), C-(iv), D-(i)
• B. A-(ii), B-(iii), C-(i), D-(iv)
• C. A-(i), B-(iii), C-(iv), D-(ii)
• D. A-(iii), B-(iv), C-(ii), D-(i)

Answer 1

The correct option is A A-(ii), B-(iii), C-(iv), D-(i)

Presence of 3-4 stories plant crowns in a forest is known as stratification of the vegetation. This has maximum diversity and can be seen in the tropical forest.

Savannahs areas having less rainfall and found in the equator. The heat, periodic dryness and poor soils cannot support forests but have led to the evolution of tropical open grasslands scattered shrubs.

An example of a man-made ecosystem where the vegetation grow and thrive is dam

Blue-green algae are considered pioneers in succession because they can grow anywhere and start the succession.

So, the correct option is 'A-(ii), B-(iii), C-(iv), D-(i)'