SINDH MDCAT 2016 PAPER

( PART 8 )

1. All of the following arc correct regarding parenchyma tissue EXCEPT:

 
 
 
 

2. The lower two pairs of ribs are

 
 
 
 

3. Genetically isolated unit of population is known as:

 
 
 
 

4. Micronutrient in abiotic components, is _____ .

 
 
 
 
 

5. Which of the following options give the correct sequence (steps) in recombinant DNA technology?

I. Selection of bacteria with desired gene.

II. Insertion of rDNA into host cell.

III. Preparation of recombinant rDNA molecules.

IV. Multiplication and production of numerous copies of host with rDNA in it

Note: This question was cancelled

 
 
 
 
 

6. The continuous decease in water table and favorable changes in substratum makes the pond suitable for plants, they have much branched rhizome system. The dense growth of plants increases the rate of transpiration which ultimately exposes the marshy soil. The nutrients present in pond due to action of oxygen of air are now oxidized to nitrates and sulphates. The representative plant species of this stage are Juncos. Cyperus and Carex. The animals of this stage are snails like Anodonta and Psidium.

The above given lines tell about which of the following stage of hydrosere in a pond?

 
 
 
 
 

7. Nastoc filaments are intermixed in gelatinous mass that form ball like structure called _____ .

 

 
 
 
 

8. Which of the following process occur in the vascular tissue in leaves and in the roots ?

In Leaves In roots
A Sucrose enters phloem and is polymerized to starch Water passes from phloem to xylem by osmosis
B Sucrose enters phloem by active transport and the water potential become more negative Root pressure & transpiration pull are responsible for ascent of sap
C Water passes from phloem to xylem by osmosis making the phloem water potential less negative Active transport of water into xylem makes the water potential more negative.
D Water passes out of and phloem and is lost through transpiration Active transport of salts into the pericyclic make the water potential there high

 

 
 
 
 

9. In the diagram showing the bronchial tree given below, parts have been indicated by alphabets. Choose the answer in which the alphabets correctly match with the parts they indicate.

 
 
 
 

10. Match the hormones listed under Column I with the roles given under Column II. Choose the answer which gives the correct combination of the alphabets of the two columns:

 

 
 
 
 

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