Home
Class 12
BIOLOGY
In lithosere, foliose lichens make the c...

In lithosere, foliose lichens make the conditions favourable for the growth of

A

crustose lichesn

B

mosses

C

annual grasses

D

perennial grasses.

Text Solution

Verified by Experts

The correct Answer is:
B
In lithosere (xerosere or xerach), the pioneer community is usually constiuted by crutose lichens (e.g., Graphis, Rhiocarpon ). Folisoe lichens (e.g., Dermatocarpon, Parmelia) kill the crustose lichens by shading them, cause deeper depression and accumulate more soil particles and organic matter. Foliose lichens make the conditions favourable for the growth of hardy mosses (e.g., Tortula, Grimmia).
Promotional Banner

Similar Questions

Explore conceptually related problems

Foliose lichens are

Explain the external conditions needed for growth.

Assertion: Primary succession occurs over a primarlly bare area where there was no living matter from the very beginning Reason: During primary succession, reproductive structures of the previous occupants give rise to a new seral community as soon as the conditions become favourable. \ (a) Assertion and reason, both are correct. Reason is the correct explanation for assertion. (b) Assertion and reason, both are correct. Reason is not the correct explanation for assertion. (c) Assertion is correct but reason is not correct. (d) Reason is correct but assertion is not correct.

Correct sequence of stages of succession of a lithosere is: 1) Foliose lichens rarr Crustose lichens rarr Mosses rarr Annual grasses rarr Perennial grasses rarr Shrubs rarr Trees. 2) Crustose lichens rarr Foliose lichens rarr Mosses rarr Perennial grasses rarr Annual grasses rarr Annula grasses rarr Shrusb rarr Trees 3) Reed swamp stage rarr Sedges rarr Floating plants rarr Submerged plants 4) Sedges rarr Reed swamp stage rarr Floating plants rarr Submerged plants

Which of the following condition favours callus induction?

Write the internal factors for condition of growth.

Fifty seeds were selected at random from each of 5 bags of seeds, and were kept under standardised condition favourable to germination. After 20 days, the number of seeds which had germinated in each collection were conducted and as follows What is the probablity of germination of (i) More than 40 seeds in a bag. (ii) 49 seeds in a bag (iii) More than 35 seeds in a bag

Assertion (A) : Root stock functions as a storage and protective organ Reason (R) Root stock remains alive below the ground during unfavourable conditions and resumes growth during the favourable conditions.