In Xerarch succession of plants successional series progress from –

1. Xeric to mesic conditions

2. Hydric to the mesic conditions

3. Hydric to xeric conditions

4. Xeric to hydric conditions.

Which term represents the medium water condition?

1. Xeric

2. Hydric

3. Mesic

4. Metic

The species that invade a bare area are called as-

1. Seral species

2. Pioneer species

3. Climax species

4. Keystone species

How do Lichens play a vital role in succession?

1. They grow in pollution free area

2. They secrete acids to dissolve rock, helping in weathering and soil formation.

3. They are symbiotic association between fungi and algae.

4. More than one options are correct.

What would be the order of plants in a xerarch succession?

1. Lichens, bryophytes, small annual plants, perennial herbs, grasses

2. Lichens, bryophytes, grasses, perennial herbs

3. Grasses, Lichens, bryophytes, herbs

4. Small annual plants, perennial herbs, grasses Lichens, bryophytes

In Hydrarch succession, the order of plant groups is-

1. Rooted-submerged plants, Phytoplanktons, rooted-floating angiosperms, reedswamp, scrub marsh-meadow,

2. Phytoplanktons, rooted-submerged plants, rooted-floating angiosperms, reedswamp, marsh-meadow, scrub

3. Phytoplanktons, rooted-submerged plants, rooted-floating angiosperms, scrub, reedswamp, marsh-meadow,

4. Phytoplanktons, rooted-floating angiosperms, rooted-submerged plants, reedswamp, marsh-meadow, scrub

In hydrarch succession, after the climax community is established, water body is converted into-

1. Pond

2. Land

3. Swamp

4. None of the above

What would be the climax of a hydrarch succession?

1. Grassland

2. Marsh-meadow

3. Forest

4. Reed-swamp

Xerarch and Hydrarch succession leads to respective climax communities as follows-

1. Xeric and hydric

2. Hydric and xeric

3. Mesic and mesic

4. Xeric and mesic

Identify the stages of hydrarch succession.

                      A                                               B
 

1. Reed-swamp stage Marsh-meadow stage

2. Submerged plant stage Scrub stage

3. Reed-swamp stage Submerged plant stage

4. Scrub stage Marsh-meadow stage