Study the schematic representation given above and answer the following questions : (a)Identify A in it. (b)Identify D in it. (c)When the population density at time t is N as shown above, write the population density at time `t +1` in the form of an equation using appropriate symbols.

Study the diagram given below and answer the questions that follow: Identify the above structure and mention its location

Study the diagram given below and answer the questions that follow : Identify the above structure and mention its location in a plant.

Study the diagram given below and answer the questions that follows : Identify the above structure and mention its location in a flower .

Study the picture given below and answer the following questions : (i) Identify the type of pollution. (ii) Name one pollutant that causes the above pollution. (iii) Mention the impact of this pollution on human health. (iv) State one measure to control this pollution. (v) What is a 'Pollutant ? Explain the term.

(a) Study the flow chart given below and complete the equation that follows by identifying 1, 2, 3 and 4. (b) Mention the different ways by which the population density of different species can be measured.

Study the schematic representation of the genes involved in the lac operon given below and answer the questions that follow : {:(p,i,p,o,z,y,a):} (a) Identify and name the regulatory gene in this operon. Explain its role in 'switching off' the operon. (b) Why is the lac operon's regulation referred to as negative regulation ? (c ) Name the inducer molecule and the products of the genes 'z' and 'y' of the operon. Write the functions of these gene products.

If N = population density at time t, then population density at time t + 1 can be written as. N_(t+1) = N_(t) + [(A+B)-(C+D)] . Select the correct option for A,B,C and D in the above equation.

Use the periodic table to answer the following questions. a. Identify an element with five electrons in the outer subshell. b. Identify an element that would tend to lose two electrons. c. Identify an element that would tend to gain two electrons. d. Identify the group having metal, non-metal, liquid as well as gas at the room temperature.

Draw and explain a logistic curve for a population of density (N) at time (t ) whose intrinsic rate of natural increase is (r) and carrying capacity is (k).

select the correct representation of density of population (N) which can be expressed after a period of time t+1 .