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Pinus seed cannot germinate and establish without fungal associaton. This is because:

  • Option 1)

    its embryo is immature

  • Option 2)

    it has obligate association with mycorrhizae

  • Option 3)

    it has a very hard seed coat

  • Option 4)

    its seed contain inhibitors that prevents germinatiom.

     

Pinus plant is devoid of root hair. So it has difficulty in absorbing water from the soil. A seed can only germinate after absorbing adequate amount of water. Hence, by the symbiotic association with fungi, pinus seed can germinate and grow. So the answer is option 2

 

Drug called 'Heroin' is synthesized by:

 

  • Option 1)

    methylation of morphine

  • Option 2)

    acetylation of morphine

  • Option 3)

    glycosylation of morphine

  • Option 4)

    nitration of morphine

  Heroin - Commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. - wherein   This is obtained by acetylation of morphine, which is extracted from the latex of poppy plant Papaver somniferum Generally taken by snorting and injection, heroin is a depressant and slows down body functions.      Herion is a chemically diacetylmorphine...

Which of the following equipments is essentially required for growing microbes on a large scale, for industrial production of enzymes?

 

  • Option 1)

    BOD incubator

  • Option 2)

    sludge digestor 

  • Option 3)

    Industrial oven

  • Option 4)

    Bioreactor

  Bioreactors - Bioreactors are stirrer cylindrical tanks. The stirrer provides movement, even mixing and O2 availability throughout the bioreaction. - wherein Bioreactors can be 100 to 1000 lt for large production.       In order to produce large quantities of the enzymes , bioreactors are used wherein large volumers of culture can be processed or provides optimal conditions for achieving...

Which of the following muscular disorder is inherited?

 

  • Option 1)

    Tetany

  • Option 2)

    Muscular dystrophy

  • Option 3)

    Myasthenia gravis

  • Option 4)

    Botulism

 

G jk hbvffvbbvhvhdsa by yu bg ds.  By h juju fdg. M.l. n.  Df 754iivf. Bbm..

 

Select the correctly written scitific name of Mango which was first described by Carolus Linnaeus :

  • Option 1)

    Mangifera indica Car. Linn.

  • Option 2)

    Mangifera indica Linn.

  • Option 3)

    Magniferra indica

  • Option 4)

    Magnifera Indica

Mangifera indica Linn

 

 

In a species,the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average reight between 3 to 3.3 kg survive whereas 99% of the infants born with weight from 2 to 2.5 kg or 4.5 to 5 kg die.Which type of selection process is taking place ?

  • Option 1)

    Directional Selection

  • Option 2)

    Stabilizing Selection

  • Option 3)

    Disruptive Solution

  • Option 4)

    Cyclical Solution

  Stabilizing or balancing selection - A type of natural detection which leads to the elimination of organism having over specialised characters and maintains homogeneous population which is generally constant.  - wherein It favours the average or normal phenotypes. Results in very low rate of evolution.        Stabilizing selection favours the medium types  while the extreme phenotypes  are...

Following statements describe the characteristics of the enzyme Restriction Endonuclease. Identify the incorrect statement.

  • Option 1)

    The enzyme cuts DNA molecule at identified position within the DNA.

  • Option 2)

    The enzyme binds DNA at specific sites and cuts only one of the two strands.

  • Option 3)

    The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.

  • Option 4)

    The enzyme recognises a specific palindronic nucleotide sequence in the DNA.

  Restriction Endonuclease - These enzymes cleave DNA only within or near the specific base sequence. These sequences are called as recognition sites. They are of three types RE- I, RE-II and RE-III. - wherein 1st Restriction enzyme (Hind II) was used in RDT.      Restriction endonuclease bind to the specific sites (palindromic sequences) the  and cut both the strands of the .Option 1)The...

Which of these following methods is the most suitable for disposal of nuclear waste ?

  • Option 1)

    Shoot the waste into space.

  • Option 2)

    Bury the waste under Antarctic ice-cover

  • Option 3)

    Dump the waste within rocks under deep ocean

  • Option 4)

    Bury the waste within rocks deep below the Earth's surface

  Radioactive pollution - This pollution occurs through radiations. Radiations are of two types: - wherein (i) Non ionising radiations: UV rays, IR rays, etc. UV rays cause skin burning, IR rays increases atmospheric temperature and leads to the green house effect. (ii) Ionising radiation: X – rays, x-rays, beta-rays, gamma-rays cause genetic injury on mutation.       Nuclear or radioactive...

Which of the following statements is incorrect ?

  • Option 1)

    Morels and truffles are edible delicacies.

  • Option 2)

    Claviceps is a source of many alkaloids and LSD.

  • Option 3)

    Conidia are produced exogenously and ascospores endogenously.

  • Option 4)

    Yeasts have filamentous bodies with long thread-like hyphase.

  Ascomycetes / Sac fungi - Mycelium is septate and branched. Sexual reproduction is Isogamy or anisogamy. Four to eight ascospores are formed in an ascus. Fruiting body is Ascocarp. Centrum is present. - wherein Eg. Saccharomyces, cerevisiae, Baker's yeast, Penicillium.       Yeasts are unicellular fungi. They sometimes form pseudophypha by continuous budding, they are not...

The ciliated epithelial cells are required to move particles or mucus in a specific direction. In human, these cells are mainly present in :

  • Option 1)

    Bile duct and Bronchioles

  • Option 2)

    Fallopian tubes and Pancreatic duct

  • Option 3)

    Eustachian tube and Salivary duct

  • Option 4)

    Bronchioles and Fallopiun tubes

  Ciliated epithelium - Single layer of columnar or cuboidal cells bearing cilia on their surface. - Contains goblet cells (secretory cells) in some locations. - wherein Locations - Upper respiratory tract, uterine (fallopian) tube, uterus, paranasal sinuses, ventricles of brain & spinal central canal (ependyma). Functions - Moves mucous and other substances by ciliary action, movement of...

Which of the following statements is incorrect ?

  • Option 1)

    Viroids lack a protein coat.

     

  • Option 2)

    Viruses are obligate parasites.

  • Option 3)

    Infective constitiuent in viruses is the protein coat.

  • Option 4)

    Prions consist of abnormally folded proteins.

  Viruses - Nucleoprotein entity which require living host to replicate themselves utilising its synthetic machinery. -     Viruses are made up of protein coat and genetic material. The genetic material is inserted into the host for multiplication and growth of viruses. Hence, genetic material is the infectious constituent.Option 1)Viroids lack a protein coat.  Option 2)Viruses are obligate...

What is the direction of movement of sugars in phloem?

  • Option 1)

    Non-multidirectional

  • Option 2)

    Upward

  • Option 3)

    Downward

  • Option 4)

    Bi-directional

  Translocation - The transport of substances over long distances through the vascular system, xylem and phloem. -       Transportation of nutrients can occur from leaves to roots and other parts of plants or from roots to the new leaves. Hence,sugar transport is bidirectional.Option 1)Non-multidirectionalOption 2)UpwardOption 3)DownwardOption 4)Bi-directional

Select the correct sequence for transport of sperm cells in male reproductive system.

 

  • Option 1)

    Testis \rightarrow Epididymis \rightarrow Vasa efferentis \rightarrow Rete testis \rightarrow Inguinal canal \rightarrow Urethra

  • Option 2)

    Seminiferous tubules \rightarrow Rete testis \rightarrow Vasa efferentia \rightarrow Epididymis\rightarrow Vas deferens \rightarrow Ejaculatory duct \rightarrow Urethra \rightarrow Urethral meatus

  • Option 3)

    Seminiferous tubules \rightarrow Vasa efferentia \rightarrow Epididymis \rightarrow Inguinal canal \rightarrow Urethra

  • Option 4)

    Testis \rightarrow Epididymis \rightarrow Vasa efferentia \rightarrow Vasa deferens \rightarrow Ejaculatory duct \rightarrow Inguinal canal \rightarrow Urethra \rightarrow Urethral meatus

  Testis - In adults, each testis is oval in shape, with a length of about 4 to 5 cm and a width of about 2 to 3 cm. The testis is covered by a dense covering. -       The pathway for the transport of sperms: Seminiferous tubules Rete testis Vasa efferentia Epididymis Vas deferens Ejaculatory duct Urethra Uretral meatus                                                                Option...

Select the hormone-releasing Intra-uterine Devices.

  • Option 1)

    Vaults,LNG-20

  • Option 2)

    Multiload\: 375,Progestasert

  • Option 3)

    Progestasert,LNG-20

  • Option 4)

    Lippes\: Loop,Multiload\: 375

    contraceptive - Contraceptive are methods which help prevent unwanted pregnancies. - wherein An ideal contraceptive should be userfriendly, easily available, effective and reversible with no or least sideeffects. It also should in no way interfere with the sexual drive, desire and/or the sexual act of the user.     The IUD's or Intra-Uterine Devices can act either through phagocytosis of...

Match the hominide with their correct brain size :

(a)\; Homohabilis\; \; \; \; \; \;\; \; (i)\; 900cc

(b)Homoneanderthalensis\; \; \; \; \; \; (ii)\; 1350cc

(c)Homo\; erectus\; \; \; \; \; \; (iii)\; 650-800cc

(d)Homo\; sapiens\; \; \; \; \; \; (iv)\;1400 cc

Select the correct option.

  • Option 1)

    (a)\; \; \; \; (b)\; \; \; \; (c)\; \; \; \; (d)

    (iii)\; \; \; \; (i)\; \; \; \; (iv)\; \; \; \; (ii)

     

     

     

  • Option 2)

    (a)\; \; \; \; (b)\; \; \; \; (c)\; \; \; \; (d)

    (iii)\; \; \; \; (ii)\; \; \; \; (i)\; \; \; \; (iv)

  • Option 3)

    (a)\; \; \; \; (b)\; \; \; \; (c)\; \; \; \; (d)

    (iii)\; \; \; \; (iv)\; \; \; \; (i)\; \; \; \; (ii)

  • Option 4)

    (a)\; \; \; \; (b)\; \; \; \; (c)\; \; \; \; (d)

    (iv)\; \; \; \; (iii)\; \; \; \; (i)\; \; \; \; (ii)

  Homo Habilis - Homo Habilis was a transitional man, species name was Habilis which means able or skilful. - wherein Fossils were discovered from Pleistocene rocks of Olduvai Gorge in East Africa.       (a)  had brain capacities between   (b)  had brain capacities of  (c)  had brain capacity of  (d) had brain capacity of Option 1)      Option 2) Option 3) Option 4)

Use of an artificial kidney during haemodialysis may result in:

(a) Nitrogeneous waste build-up in the body

(b) Non-elimination of excess potassium ions

(c) Reduced absorption of calcium ions from gastro-intenstinal tract

(d) Reduced RBC production

Which of the following options is the most appropriate ?

  • Option 1)

    (a) and (b) are correct

  • Option 2)

    (b) and (c) are correct

  • Option 3)

    (c) and (d) are correct

  • Option 4)

    (a) and (d) are correct

Option 1) a & b are correct

Match the following genes of the Lac operon with their respective products :

(a)\; i \; gene \; \; \; \; \: \; (i)\; \beta -galactoridase

(b)\; z \; gene \; \; \; \; \: \; (ii)\; Permease

(c)\; a \; gene \; \; \; \; \: \; (iii)\; Repressor

(d)\; y \; gene \; \; \; \; \: \; (iv)\; Transacetylase

Select the correct option.

     

  • Option 1)

    (a)\; \; \; \; (b)\; \; \; \; (c)\; \; \; \; (d)

    (i)\; \; \; \; (iii)\; \; \; \; (ii)\; \; \; \; (iv)

     

     

     

  • Option 2)

    (a)\; \; \; \; (b)\; \; \; \; (c)\; \; \; \; (d)

    (iii)\; \; \; \; (i)\; \; \; \; (ii)\; \; \; \; (iv)

  • Option 3)

    (a)\; \; \; \; (b)\; \; \; \; (c)\; \; \; \; (d)

    (iii)\; \; \; \; (i)\; \; \; \; (iv)\; \; \; \; (ii)

  • Option 4)

    (a)\; \; \; \; (b)\; \; \; \; (c)\; \; \; \; (d)

    (iii)\; \; \; \; (iv)\; \; \; \; (i)\; \; \; \; (ii)

  The lac operon - In lac operon, a polycistronic structural gene is regulated by a common promoter and regulatory genes.  - wherein Such arrangements are very common in bacteria and is referred to as operon.        (a)   codes for Repressor protein (b)   codes for -galactosidase (c)   codes for Transacetylase (d)   codes for PermeaseOption 1)      Option 2) Option 3) Option 4)

Tidal Volume and Expiratory Reserve Volume of an athlete is 500 \; mL and 1000 \; mL respectively, What will be his Expiratory Capacity if the Residual Volume is 1200 \; mL ?

  • Option 1)

    1500\; mL

  • Option 2)

    1700\: mL

  • Option 3)

    2200\: mL

  • Option 4)

    2700\: mL

  Expiratory Capacity (EC) - Total volume of air a person can expire after a normal inspiration - wherein This includes tidal volume and expiratory reserve volume (TV+ERV)       Expiratory Capacity                                                                  Option 1)Option 2)Option 3)Option 4)

Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology ?

 

  • Option 1)

    Genetic code is not ambiguous

  • Option 2)

    Genetic code is redundant

  • Option 3)

    Genetic code is nearly universal 

  • Option 4)

    Genetic code is specific

  Salient features of genetics code - The code is nearly universe eg; from bactria it human, UUU would code for phenylalanine. Some exception are found in mitochondrial codons, and in some protozoans. -     Genetic code is nearly universal. It means that the codons code for the same amino acid in all the organisms except for some minor deviations.This property of genetic code allows bacteria...

Which of the following statements is not correct ?

  • Option 1)

    Lysosomes have numerous hydrolytic enzymes.

  • Option 2)

    The hydrolytic enzymes of lysosomes are active under acidic pH.

  • Option 3)

    Lysosomes are membrane bound structures.

  • Option 4)

    Lysosomes are formed by the process of packaging in the endoplasmic reticulum.

  Golgi Apparatus - Principally performs the function of packaging materials, to be delivered either to intracellular targets or secreted outside of the cell.    - wherein It is the important site for the formation of glycoproteins and glycolipids.     Lysosomes are the membrane found hydrolytic enzymes containing vesicles that are given off through the golgi bodies.Option 1)Lysosomes have...
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