Download App

Ecosystems — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYEcosystems1 Mark
MCQ
Primary succession is development of communities on ?
  • A
    Newly exposed habitat.
  • B
    Cleared forest area.
  • C
    Freshly harvested crop field.
  • D
    Pond filled after a dry season.
✓

Answer

  1. Newly exposed habitat.

Explanation:

When the ecosystem in an area changes, it is called ecological succession. New species come into existence at this place.

Apart from this, ecological succession is of 2 types. One is primary succession, in which a barren land with no species affiliation shows the development of a new species.

Another is secondary succession where the species develop again in a land that was previously occupied by different organisms and was destroyed due to certain reasons.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (0.5 Marks)" from Ecosystems→Ecosystems — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

The person is unable to discriminate between red and green colours, suffers from:
→
Which of the following diseases is caused due to helminth infection?
→
In a food chain, which of the following produces in the largest amount
→
What is used for commercial production of ethanol ?
→
A male child would be born to parents if
→
Which of the following plant seeds are used as "jeweller's weight"
→
Use of which of the following contraceptive device has increased in recent years due to its additional benefit of protecting the user from contracting $STDs$ and $AIDS$?
→
Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release of
→
The World Summit on Sustainable Development (2002) was held in:
→
Given below are two statements : one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.

Assertion $(A):$

Polymerase chain reaction is used in DNA amplification

Reason $(R):$

The ampicillin resistant gene is used as a selectable marker to check transformation

In the light of the above statements, choose the correct answer from the options given below :

→