Home
Class 12
BIOLOGY
(a) Primary succession takes a very long...

(a) Primary succession takes a very long time for the occurrence in any region.
(b) Secondary succession takes less time.
(c) Forest destroyed by fire is an example for primary succession,
(d) The development of plant community in a barren area is primary succession. 

Text Solution

Verified by Experts

The correct Answer is:
Forest destroyed by fire is an example for primary succession
Promotional Banner

Topper's Solved these Questions

  • ECOSYSTEM

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS AND ANSWERS (V. ASSERTION AND REASON:)|6 Videos

  • ECOSYSTEM

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS AND ANSWERS (VI. CHOOSE THE CORRECT PAIR :)|3 Videos

  • ECOSYSTEM

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS AND ANSWERS (III. CHOOSE THE CORRECT STATEMENTS: )|5 Videos

  • ECOMONICALLY USEFUL PLANTS AND ENTREPRENEURIAL BOTANY

    SURA PUBLICATION|Exercise UNIT TEST|14 Videos

  • ENVIRONMENTAL ISSUES

    SURA PUBLICATION|Exercise Unit Test|14 Videos

Similar Questions

Explore conceptually related problems

Name and describe the succession which takes less time.

Differentiate Primary succession and Secondary succession.

Pick out the correct option from (a) to (e).I. Primary succession begins in areas where natural communities have been destroyed.II. Hydrarch succession takes place in water.III. The climax communityis the community that is in near equilibrium with the immediate environment.IV. Newly cooled lava secondary succession.

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.

Assertion: In a marine aquatic ecosystem, the biomass of phytoplanktons (producers) at any given time, is lower than the biomass of zooplanktons (primary consumers). Reason: Phytoplanktons are consumed almost as rapidly as they are formed and thus have shorter life spans. (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.

A man has three friends. The number of ways he can invite one friend everyday for dinner on six successive nights so that no friend is invited more than three times is a. 640 b. 320 c. 420 d. 510

Match the column I with column II {:("Column I","Column II"),("a. Lithosere","(i) Succession initiating on saline water"),("b. Psammosere","(ii) Succession initiating on desert area"),("c. Halosere","(iii) Succession initiating on barren rock"),("d. Xerosere","(iv) Succession initiating on sand"):}

Estimate the mean free path and collision frequency of a nitrogen molecule in a cylinder containing nitrogen at 2.0 atm and temperature 17°C. Take the radius of a nitrogen molecule to be roughly 1.0 A. Compare the collision time with the time the molecule moves freely between two successive collisions (Molecular mass of N2 = 28.0 u).

Match column I with column II and select the correct option from the given codes. {:("column I","column II") , ("Gross primary productivity",(i)"Geen plants"),("Secondary productivity",(ii)"Rate of synthesis of organic matter by consumers"),("Transduc {:("column I","column II"),("Bacteria",(i)"Prisere"),("Green plants",(ii)"Transducers"),("Primary succession",(iii)"Lithosere"),("Succession on bare rock",(iv)"Micro-consumers"):}