Below is the diagrammatic representation of the response of organisms against temperature. Find out the correct match.

1. A-plants, B-birds

2. A-birds, B-mammals

3. C-mammals, B-plants

4. A-birds, B-plants

Read the given statements and select the correct option.
Statement A : Cattle do not graze on weeds of Calotropis.
Statement B : Calotropis have thorns and spines, as defense against herbivores.

1. Both statements A and B are incorrect.
2. Statement A is correct but statement B is
    incorrect.
3. Both statements A and B are correct but
    statement B is not the correct explanation
    of statement A.
4. Both statements A and B are correct and
    statement B is the correct explanation of
    statement A.

Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their:

1. Growth response

2. Defence action

3. Effect on reproduction

4. Nutritive value

Formation of wide variety of habitats takes place by:-

1. Types of species inhabiting that area

2. Types of predation

3. Regional and local variation of environment conditions

4. All of the above 

According to Allen's rule, the mammals from colder climates have

1. shorter ears and longer limbs

2. longer ears and shorter limbs

3. longer ears and longer limbs

4. shorter ears and shorter limbs

Salt concentration (salinity) of the sea measured in parts per thousand is
1. 10-15
2. 30-70
3. 0-5
4. 30-35

Formation of tropical forests needs mean annual temperature and mean annual precipitation as

1. 18-25°C and 150-400 cm

2. 5-15°C and 50- 100 cm

3. 30-50°C and 100- 150 cm

4. 5-15°C and 100- 200 cm

Which of the following forest plants control the light conditions aground?

1. Lianas and climbers

2. Shrubs

3. Tall trees

4. Herbs

What will happen to a well-growing herbaceous plant in the forest if it is transplanted outside the forest in a park?

Match the column A with column B :-

               A                                                 B                 

a. phytophagous insects           i) A stage of suspended development 

b. Diapause                            ii) To avoid summer related problem 

c. Homeostasis                       iii) feeding on plant sap

d. Aestivation                        iv) Maintenance of constant internal environment 

1. a-(iv), b(ii), c-(iii), d-(i)

2. a-(iii), b(i), c-(iv), d-(ii)

3. a-(i), b(iii), c-(ii), d-(iv)

4. a-(iii), b(ii), c-(iv), d-(i)