Case Study Questions for Class 12 Biology Chapter 15 Biodiversity and Conservation

Home » Biology » Case Study Questions for Class 12 Biology Chapter 15 Biodiversity and Conservation

Case Study Questions for Class 12 Biology Chapter 15 Biodiversity and Conservation

Question 1:

Within a region, species richness increases with increasing explored area, but only upto a limit. The given graph explains this relationship.

(i) What does the given figure show?
(a) Rivet-popper hypothesis
(b) Species-area relationship
(c) Proportionate number of species of major taxa
(d) a-ecological diversity

(ii) Equation for relationship (A) between species richness and area is
(a) log S = log C + Z log A
(b) log C = log S + Z log A
(c) Z log A = log S + log C
(d) log S = log C + log A.

(iii) What is the value of slope of line or regression coefficient Z for frugivorous birds?
(a) 0.1-0.2
(b) 1.15
(c) 0.01-0.1
(d) 0.6-1.2

(iv) The shape of curve for relationship between species richness and areas for a wide variety of taxa is
(a) straight line
(b) parabola
(c) rectangular hyperbola
(d) bell shaped.

(v) Who gave this concept of increase in species richness with increasing area?
(a) Humboldt
(b) Odum
(c) Edward Wilson
(d) Paul Ehrlich

Answer Answer: (i) (b)
(ii) (a) On a logarithmic scale, the relationship between species richness and area is a straight line.
It is described by the equation log S = log C + z log A
(iii) (b) The regression coefficient Z have a value of 1.15 for frugivorous birds and mammals of tropical forests of different continents.
(iv) (c)
(v) (a) While exploring the wilderness of South American jungles, Alexander von Humboldt found that within a region, the species richness increased with increasing area but upto a certain limit.
  • Case Study and Passage Based Questions for Class 12 Biology Chapter 9 Strategies for Enhancement in Food Production

    Case Study/Passage Based Questions: Question 1: Given below is a flowchart for the formation of somatic hybrid, Pomato. (i) A certain tissue, of a plant, infected with TMV was used to obtain a new plant using tissueculture technique. Identify the technique used and reason out the possibility of obtaininga new healthy plant.(ii) How can pollen … Continue reading Case Study and Passage Based Questions for Class 12 Biology Chapter 9 Strategies for Enhancement in Food Production

  • Case Study and Passage Based Questions for Class 12 Biology Chapter 7 Evolution

    Case Study/Passage Based Questions: Question 1: Darwin found the varieties of finches that in travelled to Galapagos Islands and observed variations in them. (i) What role does an individual organism play as per Darwin’s theory of natural selection?(ii) How did Darwin explain the existence of different varieties of finches on Galapagos Islands?(iii) What is “fitness … Continue reading Case Study and Passage Based Questions for Class 12 Biology Chapter 7 Evolution

  • Case Study and Passage Based Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance

    Case Study/Passage Based Questions: Question 1: Given below is the diagram of a tRNA molecule. Answer the questions based on the above diagram:(i) Why is charging of tRNA essential in translation?(ii) Where does peptide bond formation occur in a bacterial ribosome?(iii) Name the scientist who called tRNA an adaptor molecule. Answer Ans. (i) Charging of … Continue reading Case Study and Passage Based Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance

Leave a Reply

NEET Chapter-wise Test Series for PCB

CBSE Term 2 Test Series for Class 9 to 12

%d bloggers like this:
search previous next tag category expand menu location phone mail time cart zoom edit close