During the rate of succession several factors would be observe at the pioneer as well as climax community;

STAGES	CHARACTER
(A) Pioneer community	(i) Biotic Potential low
(B) Climax community	(ii) Root to Shoot ratio is high
	(iii) Productivity per biomass is low
	(iv) Net primary productivity is high
	(v) P/R ratio is greater than 1
	(vi) Nutrient cycling is closed
	(vii) Regeneration ability is more
	(viii) Resistance ability is more

  Match the community stages with its given characters;

TLS Online TPP Program

#Question id: 29047

#Unit 10. Ecological Principles

Homeotherms regulate body temperature by__

a) remain body temp constant

b) Equal the ratio of heat in and heat out

c) Heat in involve convection and conduction 

d) Heat out involve metabolism and solar radiation

TLS Online TPP Program

#Question id: 29048

#Unit 10. Ecological Principles

Many organisms minimize heat loss to the environment via___

TLS Online TPP Program

#Question id: 29049

#Unit 10. Ecological Principles

Some given statements about anti freezing are given;

a. some invertebrates to withstand temperatures as low as –18°C without freezing, in presence of glycoproteins

b. Sodium, potassium, or chloride ions involve to increasing  the blood freezing point, so the lack of these ions some species help to lower the blood freezing point

c. Amphibians release large amount of glucose into the blood to prevent freezing of blood in cold

d. Sodium, potassium or urea function as anti freezing in their blood

e. Glycine causes supercooling in plants

Which of the following statements about supercooling/anti freezing is correct?

TLS Online TPP Program

#Question id: 29050

#Unit 10. Ecological Principles

Which of the following cells can withstand temperatures down to–38°C?

TLS Online TPP Program

#Question id: 29051

#Unit 10. Ecological Principles

Increase in the average body mass of animal population within a species with higher latitude is known as___

TLS Online TPP Program

#Question id: 29052

#Unit 10. Ecological Principles

Allen’s rule states that__