TLS Online TPP Program

#Question id: 10196


Why are light compensation points lower for shade plants?

#Unit 6. System Physiology – Plant
  1. Respiration rate in shaded plants are higher
  2. because only  a little photosynthesis is necessary to bring the net rates of CO2 exchange to negative
  3. this is because respiration rates in shade plants are very low
  4. because shaded plants ability to achieve negative CO2 uptake rates at lower PPFD values than sun plants

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TLS Online TPP Program

#Question id: 10645

#Unit 10. Ecological Principles

The logistic equation above is used to describe the rate of change of a population, N, with time, t, where r is the intrinsic rate of increase and K is the carrying capacity. dn/dt is isoclines when 

TLS Online TPP Program

#Question id: 10646

#Unit 10. Ecological Principles

Four sampling unit of Area occupy by species having following number is 00, 20, 10, 20. What is abundance of that species?

TLS Online TPP Program

#Question id: 10647

#Unit 10. Ecological Principles

Use the graph to answer the following question


In the figure, which of the following survivorship curves implies that an animal may lay many eggs, of which a regular number die each year on a logarithmic scale?

TLS Online TPP Program

#Question id: 10648

#Unit 10. Ecological Principles

Which statements about K are correct?

I) K varies among populations.

II) K varies in space.

III) K varies in time.

IV) K is constant for any given species.

TLS Online TPP Program

#Question id: 10649

#Unit 10. Ecological Principles

According to the logistic growth equation


A) the number of individuals added per unit time is greatest when N is one fourth of K

B) the per capita growth rate (r) increases as N approaches K

C) population growth is zero when N equals K

D) the population grows exponentially when N approaches K

TLS Online TPP Program

#Question id: 10650

#Unit 10. Ecological Principles

Following some characteristic feature of K selected species

A. semelparity 

B. Mate choice

C. Density independent mortality

D. large size of offspring

What is the above combination is correct?