List of practice Questions

Arrange the following in correct order in polymerase chain reaction cycle: 
I Deannealing
II Denaturation
III Extension
IV Annealing 
 

Trichomoniasis is caused by:
Identify the correct statement regarding plant tissues

Study the table and find deficiency symptoms shown in plants

Identify the incorrect statements among the following
I. The use of amniocentesis was banned in 1970.  
II. Cervical cancer was caused by Herpes Simplex Virus  
III. Copper bearing IUDs, progestogen are emergency contraceptives.  
IV. 3-D cross sectional picture of CAT scan is called tomogram.  

While isolating DNA from bacteria the following enzyme is not used:

Match the following scientific terms with their appropriate descriptions: 

Identify the correct combinations from the following: 


 

Assertion (A): Light harvesting complexes made up of many pigments bound to proteins and are called antennae. 
Reason (R): Antennae absorb different wavelengths of light. 
 

Match the following list: 


 

Match the following list: 


 

Match the following: 


 

These are the roots in a sequence to absorb moisture, support, water minerals from other plants.

Assertion (A): Satellite is a small fragment-like structure found in some chromosomes. 
Reason (R): It is a non-staining secondary construction at a constant location.

Match the following

Haplodiploidy is a mechanism of sex determination that is common in
The change in the frequency of a gene that occurs merely by chance and not by selection in small populations is called

Find the correct statements regarding the structure of xylem and phloem: 
I. Xylem parenchyma store starch or fat or Tannins 
II. Xylem parenchyma have highly thickened walls and obliterated central lumens 
III. Companion cells are controlled by nucleus of sieve tubes 
IV. Phloem parenchyma is absent in most of the monocots

Microanatomy is the study of:

Match the following types of bones with examples: 

Match the following: 

Choose the correct combination from the following: 


 

Formation of an embryo from an unfertilized female gamete

Match the following list: 


 

Choose the correct statements regarding DNA discovery:
A. Watson, a physicist and Crick, a zoologist were awarded Nobel prize in 1962
B. The data based on X-ray diffraction was used for DNA structure
C. Two nucleotides can be linked in the 5' to 3' direction through phosphodiester bond
D. CsCl gradient is used to measure the densities of DNA