Quiz

Question: Select the correct match from the following.
Options:
A.Phytoplankton – Protozoa
B.Holozoic nutrition – Fungi
C.Parasitic protists – Slime moulds
D.Symbiosis – Lichens
Answer: Option D
: D

Symbiosis - association between two organisms where both get benefited. Lichens are symbioticassociation between algae and fungi.

Submit Answer & Explaination

Earn Reward Points by submitting Detailed Explaination for this Question

More Questions on This Topic :

Question 1. In Gram staining of bacteria, the primary stain used is
  1.    Safranin
  2.    Aceto-orcein
  3.    Crystal violet
  4.    iodine solution
Answer: Option C
: C

Primary stain used is crystal violet.Crystal violet stains all thecells blue/purple.
Question 2. Which statement is incorrect?
  1.    Plant virus contains RNA
  2.    Animal virus contains DNA
  3.    T4 contains dsDNA
  4.    TMV contains dsRNA
Answer: Option D
: D


The plant viruses –Tobamo viruses(tobacco mosaic virus) tomato mosaic virus;Potex viruses (potato virus X, papaya mosaic virus); yellow mosaic virus, tobacco necrosis virus, alpha mosaic virus; satellite tobacco necrosis virus and some animal viruses –Togaviurs,Picornaviruses (Polivirus), etc., contain single stranded RNA.
Question 3.  A bacterium divides every 35 minutes. If a culture containing 105  cells per mL is grown for 175 min, what will be the cell concentration per mL after 175 minutes?
  1.      175 x 105 cells
  2.     32 X 105 cells
  3.     5 x 105 cells
  4.    35 x 105 cells
Answer: Option B
: B

The time taken by a bacterium to divide is calledgeneration time (G) or doubling time,since each parent cell divides into two daughter cells. In this particular culture, the doubling time is 35 minutes. We are asked what will be cell concentration after 175 min. Given,thegeneration time Gis 35 min.The total time elapsed (t)=175 min. Then the cells would have divided or doubled 5 times (175/35=5), in this period. This means n=5 (wheren is the number of generations). After one doubling, a single cell would become 2 cells. In the second generation, these 2 cells would double to 4 cells and so on. This gives a simple formula= 2n. Given that n=5, then 25=32. This calculation, assumes that the starting culture contained a single cell. In the problem, we are informed that the culture contained an initial cell concentration of 105cells/mL. Therefore, the final cell concentration after 175 min should be 105X 32 cells/mL.

Check all Questions in this Topic : Click HERE

Recent Questions

Q.  what Will Be The Area (in Square Metres) Of 1.5 Metre Wide....Q. When Xm Is Multiplied By Xn, Product Is 1. The Relation Betw....Q. The Process Of Improving The Cutting Action Of The Grinding ....Q. The Compaction Of Concrete In The Drilled Pile Hole Is Done ....Q. The Important Test To Be Conducted On A Stone Used In Docks ....Q. An Ideal Fuel Is Cheap, Readily Available, Easily combu....Q.  the Average Salary Of All The Workers In A Workshop Is Rs.....Q.  a Generalised Software Package Produced To Meet The Bugs O....Q.  expand And Simplify (x + Y)³....Q. Biological Complete Proteins Are Found In....Q. ___________ Is A Factor Of Every Number And Every Number Is ....Q. Once A Drawing Is Determined To Be Complete, The Title Block....Q. The Antiseptic Compound Present In Dettol Is....Q. Calorific Value Of Wood Gas Is About __________ Kcal/Nm³.....Q. Gases Are Cooled In Joule-Thomson Expansion, When It Is ____....Q. 'Three Decades In Parliament' Is A Collection Of -....Q. The Leakage Current Across A Pn Junction Is Due To _________....Q. A Weight Of 100 Kg Is Supported By A String Whose Ends Are A....Q. The Efficiency Of Steam Turbines May Be Improved By....Q. Conversion Achieved In HNO₃ Synthesis With The Use Of Plat....Q. Which Country Has Been Admitted In July 2013 As The 28th Mem....Q. A Refrigerating System Operating On Reversed Brayton Refrige....Q. Reciprocating Air Compressor Is Best Suited For....Q. Two Resistors Are In Series: A 5.6 KΩ Resistor And A 4.7 K....Q. In A Throw Of Coin What Is The Probability Of Getting Head.....Q. In Order To Convert Fractional Inches Into Decimal Inches __....Q. The Minimum Number Of Theoretical Plates Is Required For Ach....Q. Environmental Barriers Are The Same As ___________ Noise.....Q.  the Average Of 35 Students In A Class Is 16 Years. The Ave....Q. S1: We Speak Today Of Self-determination In Politics. P : So....Q. In Vehicles With Tilt Steering, The Steering Column Is Pivot....Q. The Most Serious Disadvantage Of An Orificemeter Is That....Q. A Riveted Joint Is A __________ Fastening.....Q. According To National Building Code, The Hydrants In Water M....Q. The Average Duration Of Menstrual Cycle In Human Female Is _....Q. Choose The Word Which Is Different From The Rest.....Q. Which Of The Following Is The Heaviest?....Q. Which Of The Following Is An Example Of Utility?....Q. The Smallest Division Of Geological Time Scale Is....Q. Which Article Grants Protection To Persons Who Are Arrested ....Q. In Heating The Ferromagnetic Material By Induction Heating, ....Q. Which One Of The Following Is The Common Factor Of (4743 + 4....Q. Which Of The Following Is Not A Part Of The Control Panel?....Q. The Smallest Number Of Four Digits Which On Division By 4, 6....Q. A Train Running At A Speed Of 54 Km/hr Crosses A Platform In....Q. After The Starting Winding Of A Single Phase Induction Motor....Q. Gusset Stays In A Boiler Are Provided To....Q. If The Diagonals Of A Quadrilateral Are Equal And Bisect Ea....Q. The Runway Length After Correcting For Elevation And Tempera....Q. In Prototyping....