Match the following  Special Techniques Are Used in Nutritional Studies;

A.) Hydroponic growth system	1.) plant roots lie on the surface of a trough, and nutrient solutions flow in a thin layer along the trough over the roots and this system ensures that the roots receive an ample supply of oxygen
B.) Nutrient film growth system	2.) In this technique, plants are grown with their roots suspended in air while being sprayed continuously with a nutrient solution, This approach provides easy manipulation of the gaseous environment around the root
C.) Aeronic growth system	3.) The technique of growing plants with their roots immersed in nutrient solution without soil and requires a large volume of nutrient solution or frequent adjustment of the nutrient solution to prevent nutrient uptake by roots from producing radical changes in nutrient concentrations and pH of the medium.

Which of the following combination is correct ?

#Question id: 10661

#Unit 10. Ecological Principles

Semelparous species are those that produce all of their offspring in a single reproductive event. The survivorship curve of a population of a semelparous species would most likely resemble which of the following? 

#Question id: 10662

#Unit 10. Ecological Principles

Growth model of logistic with 1000 carrying capacity and exponential with ideal condition is related to initial population. (Value of rmax = .25)

A) In Logistic growth value of X should be maximum at 1000

B) In Exponetial growth value of X should be maximum at 1000

C) In Logistic growth value of X should be maximum at 500

D) In Exponential growth value of X should be constant over size of population

#Question id: 10663

#Unit 10. Ecological Principles

Following is a hypothetical life table of species

Following some statement is given

A- This type of life table is characteristic of species that produce a large number of offspring

B- Its greatest mortality early in life, with relatively low rates of death for those surviving this bottleneck

C. It is characterized by high age-specific survival probability in early and middle life, followed by a rapid decline in survival in later life

D. This includes k selected species

Which of the following above statement is correct?

#Question id: 10664

#Unit 10. Ecological Principles

dN/dt = rN (K-N/K ) 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. What is value of per capita growth rate when population size is 200 individuals? ( K= 400, r =.25)

#Question id: 10665

#Unit 10. Ecological Principles

Complete the following hypothetical life table of a species. 

Initial population size is 1000. What will be population size in next generation?

#Question id: 10666

#Unit 10. Ecological Principles

In a experimental invertebrate population the birth rate is 1200 per 1000 and death rate is 300 per 1000 per generation. Initial population size is 10000. What is value of NET reproductive rate?