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What would not take place if chromaffin cells of adrenal medulla undergoes oncogenesis?

• High blood sugar and glucosuria

• High BMR

• Pheochromocytomas

• Low blood pressure

One key function of nuclear pores is to

• aid in the production of new nuclei

• allow cells to communicate with each other

• form connections between different organelles

• allow molecules like protein to move in and out of the nucleus

From the following pairs regarding the type of animal tissue with its location. Choose the incorrect ones.

• Pseudo stratified epithelium - Eustachian tube

• Keratinized stratified epithelium - Conjunctiva of eyes

• Squamous epithelium - Alveoli of lungs

• Cuboidal epithelium - Pancreatic ducts

In biosystematics, the basis of classification is

• major morphological characters

• cytological characters

• evolutionary history considering various parameters from different fields of studies

• phenotypic relationships between species

Match the disease in column I with their characteristic symptoms in column II caused in brain.

• A - 2; B - 4; C - 3; D - 1

• A - 3; B - 2; C - 1; D - 4

• A - 4; B - 3; C - 2; D - 3

• A - 3; B - 4; C - 1; D - 2

Read the following statements about dentition.

I. Dentistry refers to the study of teeth.

II. Endodontics is the prevention and correction of abnormally aligned teeth.

III. Orthodontics is the treatment of abnormal conditions of tissues immediately surrounding the teeth.

IV. Periodontics is the prevention, diagonsis and treatment of dental diseases.

Choose the correct explanation.

• Only I

• I and II

• II and III

• I, II, III and IV

Polysaccharides, polypeptides and polynucleotides have in common that they all

• contain amino acid

• are formed in condensation reactions

• contain nitrogen

• come out in acid soluble pool

Select the correct statements out of the four (I-IV) given below about lac operon.

I. Glucose or galactose may bind with the repressor and inactivate it.

II. In the absence of lactose, the repressor binds with the operator region.

III. The Z-gene codes for permease.

IV. This was elucidated by Francois Jacob and Jacques Monad.

The correct statements are

• II and III

• I and III

• II and IV

• I and II

In Zostera, the marine angiosperm, the pollen grains are long ribbon-like and without exine. They have same specific gravity as that of water. How is this feature helpful in their pollination?

• The pollen grains become unwettable

• The pollen grains spread over large and they are lighter

• The pollen grains can float below the surface of water

• None of the above

Match the following column I with column II

• A - 4; B - 3; C - 1; D - 2

• A - 3; B - 4; C - 2; D - 1

• A - 1; B - 2; C - 4; D - 3

• A - 2; B - 1; C - 3; D - 4