Polar bears maintain their body temperature because they have more of

• Transducin protein

• Uncoupling protein

• Myoglobin protein

• F₀F₁ ATPase

The acidity of normal rain water due

• SO₂

• CO₂

• NO₂

• NO

In india, brown antlered deer(sangai) is found only in the floating landmasses of

• Wular lake

• Sasthamkotta lake

• Dal Lake

• lok tak lake

Which of the following characteristic of an early community?

• Narrow niche specialization

• High species diversity

• Community production

• open mineral cycling

Name the ectothermic animal that can thermo‐regulate by behavioural means rather than by physiological means

• Bumble bee in an orchard

• Tuna Fish in the ocean

• Lizard in a desert

• Flatworm in a pond

The most commonly used method of estimating primary productivity of a pond involves measurement of the amount

• CO₂ utilized

• Autotroph biomass

• Oxyge

• Organic carbon

17.

If a certain place shows stable population distribution. It means maximum number of individual will be.

• Healthy

• Youngest

• Oldest

• Reproductively more active

Which of the following diagram correctly represents co-existence of two species even during niche overlapping?

At any place if more diversity and variation is observed in any species of domestic animal, then it can be concluded that

• Place is natural center of origin of that species    

• Animal has been introduced once and is invasive   

• Animal has been introduced more than once  

• People take more care of animals   

Characteristic feature of Cnidaria is

• No tissue or organ system   

• Diploblastic or bilayered  

• Triploblastic or three layered 

• Segmentation