In a population of salmon fish, potential Natality is 10,000 while realised mortality is 200, then the Vitlal Index =

Related MCQs

• In snakes realised (actual) natality is less than potential natality; because.....
• Which is appropriate for the following statement ? Statement X : Pacific salmon fish reproduces only once in its life time. Statement Y : In a reproductive season it lays 2,80,000,000 eggs. X Y
• What is true for the following statements ? Statement X : Marine fishes have chlorine secretory cells. while riverine fishes have chlorine cells. Statement Y : Compared to marine water, fluid present in fish is hypotonic while reverine water is hypertonic compared to fluid present in fish. X Y X Y
• Increase and decrease in a population in one of the places in USA, because of sandy cyclone is given below. Which type of graph is possible for total no. of individuals in a population v/s month ? Month Birth rate Imigration Death Emigration July 40 100 30 20 August 100 200 50 45 September 200 800 100 10 October 100 -- 5000 3000
• What is the reason for mortality of fish in water body?
• In order to find out VITAL INDEX in Rampur Village, following information was gathered Death Rate = 1/x Birth Rate = z Average population = 1/y What is the Vital Index ?
• In a population of frog ‘J’ type of population growth curve is seen than which information from the given graph can be true for “ point A” (i) Vital Index < 100 (ii) Birth rate < death rate (iii) Birht rate > death rate
• If at “t” time population density is N, then what is the equation for the population density at (t+1) time ?
• At ‘t’ time, population density is ‘N’ and at t+1 time population density is Nt+1/If Nt+1 - Nt then find out the correct option
• Match A and B : A B (p) Simple diffusion (i) Uphill transport (q) Faciliate diffusion (ii) Membrane protein that have a hydrophilic moiety. (r) Active transport (iii) Membrane protein that have a hydrophabic moiety. (s) Water potential. (iv) The potential energy. (v) Passive transport p q r s