Practice free Botany NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
An ecosystem, which can be easily damaged, but can recover after some time if damaging effect stops will be having:
Stability is the power of a system to be in their state against unfavourable factor. Resilience is the capability of regaining its original shape or position after being deformed. Hence, it has low stability and high resilience.
Perturbation of which of the following cycles contributes most to global warming?
Changes in Global Carbon cycle contributes most in global warming.
Some of the stages in the hydrarch are labelled as:
A. Marsh meadow stage
B. Reed swamp stage
C. Submerged plant stage
D. Phytoplankton stage
E. Submerged free floating plant stage
Identify the choice that represents the correct sequence of these stages:
XII NCERT, ECOSYSTEM
PAGE NO 252
Figure 14.5
Animals with a constant body temperature such as mammals and birds require more food than do animals with a changing body temperature such as reptiles and fish. Why?
Mammals and birds require much more food and energy than do cold-blooded animals of the same weight. This is because in warm-blooded animals, the heat loss from their bodies is proportional to the surface area of their bodies, while the heat created by their bodies is proportional to their mass.
Ecological niche is:
Ecological Niche physical position and functional role of a species within the community
The removal of 'Keystone' species will affect:
(c)
Vertical distribution of different species occupying different levels is called as-
page number 242; Ecosystem-structure and function
Which are the primary consumers in a grazing food chain?
page number 245; Energy Flow
In Hydrarch succession, the order of plant groups is-
page number 251; Succession of Plants; Third paragraph.
In hydrarch succession, after the climax community is established, water body is converted into-
page number 251; Succession of Plants; Third paragraph.
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