Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Conclusion of Griffith's experiment was

Option: 1

S-strain bacteria somehow transformed by the heat killed R-strain bacteria.


Option: 2

From S-strain bacteria nothing transfer to R-strain bacteria during experiment . 


Option: 3

R-strain bacteria somehow transformed by the heat killed S-strain bacteria.


Option: 4

None of these


Select the correct match of enzymes with its related function:

Option: 1

DNA polymerase – Synthesis of DNA strands


Option: 2

Helicase – Unwinding of DNA helix


Option: 3

Ligase – Joins together short DNA segments

 


Option: 4

All of these


Select the incorrect statement regarding pedigree analysis:

Option: 1

Solid symbols show unaffected individuals


Option: 2

Proband is the person from which case history starts


Option: 3

It is useful for genetic counsellors

 


Option: 4

It is an analysis of traits in several generations of a family


Carrageenan , a jelly like substance is derived from marine algae known as 

Option: 1

Kelp 


Option: 2

Flagellates 


Option: 3

Irish moss 


Option: 4

Diatoms 


The sense organ that acts as an organ of equilibrium in Ctenophores is 

Option: 1

Nephridia 


Option: 2

Stalocyst 


Option: 3

semicircular canals 


Option: 4

Lithocysts 


Molluscan blood contains respiratory pigment 

Option: 1

Haemoglobin 


Option: 2

Haemozoin 


Option: 3

Haemocyanin 


Option: 4

All of these 


Reproduction in Mollusca is sexual and 

Option: 1

Viviparous 


Option: 2

Oviparous 


Option: 3

Either of these 


Option: 4

Ovoviviparous 


Which of the following does not  have an excretory system ? 

Option: 1

Myxine 


Option: 2

Balanoglossus 


Option: 3

Asterias 


Option: 4

Catla 


Nature and property of soil depends upon.
 

 

 

Option: 1

Climate


Option: 2

Weathering process


Option: 3

development of soil

 


Option: 4

all of these


Population attribute is/are

Option: 1

Birth rate


Option: 2

Death rate


Option: 3

Sex ratio


Option: 4

All of these


The__________having least penetrating power.

Option: 1

\alpha-rays


Option: 2

\beta-rays


Option: 3

\gamma-rays


Option: 4

All of them having same penetrating power


Cloaca is the chamber which has an opening for 

Option: 1

Alimentary canal 


Option: 2

Reproductive tract 


Option: 3

Urinary tract 


Option: 4

All of these 


The amount of biodegradable organic matter in sewage water can be estimated by measuring 

Option: 1

Biochemical oxygen demand


Option: 2

The growth of anaerobic bacteria in water


Option: 3

Biogeological oxygen demand


Option: 4

The growth of aerobic bacteria in water.


Choose the correct one 

A. Rat snake - Not a poisonous snake 

B. Peninsular tiger snake - Most poisonous snake 

C . Cornified cells - snake moulting 

D. Fangs - teeth conducting poison in snake 

Option: 1

A and B 


Option: 2

A , C and D 


Option: 3

A , B and D 


Option: 4

All are correct 


__ is an attribute of the organism (morphological, physiological, behavioural) to survive and reproduce in its habitat.

Option: 1

Migration


Option: 2

Hibernation


Option: 3

Adaptation


Option: 4

Homeostasis


Gambusia is a fish which is being introduced into the ponds in order to check the vector borne diseases such as:

Option: 1

Dengue

 


Option: 2

Malaria


Option: 3

Chikungunya

 


Option: 4

All of these


Cocaine is obtained from

 

Option: 1

Erythroxylon coca

 


Option: 2

Papaver somniferum

 


Option: 3

Atropa belladona

 


Option: 4

Datura stramonium


The most abundant class of immunoglobulins (Igs) in the body is

Option: 1

IgA


Option: 2

IgG


Option: 3

IgE


Option: 4

IgM


Succession of plant is called


 

Option: 1

Hydrarch


Option: 2

Mesarch


Option: 3

Xerarch

 


Option: 4

More then one correct answer


Muscles have special properties like:

Option: 1

Excitability


Option: 2

Contractility


Option: 3

Extensibility


Option: 4

All of these


Incomplete double circulation occurs in

Option: 1

Fishes


Option: 2

Amphibians


Option: 3

Reptiles


Option: 4

Both (2) and (3) 


Largest gland in our body is

Option: 1

Thymus


Option: 2

Thyroid


Option: 3

Liver


Option: 4

Pancrease


In uremic patients, urea can be removed by a process called

Option: 1

Dialysis


Option: 2

Filteration


Option: 3

Hemodialysis


Option: 4

Electrodialysis


The outline of principal events of urination is given below in a random manner.

(i) Stretch receptors on the wall of urinary bladder send signals to the CNS.

(ii) The bladder fills with urine and becomes distended.

(iii) Micturition

(iv) CNS passes on motor messages to initiate the contraction of smooth muscles of the bladder and simultaneous relaxation of urethral sphincter.

The correct sequence of the events is

 

Option: 1

(i) \rightarrow (ii) \rightarrow (iii) \rightarrow (iv)


Option: 2

(iv) \rightarrow (iii) \rightarrow (ii) \rightarrow (i)


Option: 3

(ii) \rightarrow (i) \rightarrow (iv) \rightarrow (iii)


Option: 4

(iii) \rightarrow (ii) \rightarrow (i) \rightarrow (iv)


Light bands conatin actin and is called 

Option: 1

I- band 


Option: 2

Anisotropic band 


Option: 3

Isotropic band 


Option: 4

More than one correct answer


Exams
Articles
Questions