Official NEET UG 2010 (C1)

Which one of the following is a xerophytic plant in which the stem is modified into the flat green and succulent structure?

Given below are four statements (a-d) regarding human blood circulatory system
(a) Arteries are thick-walled and have narrow lumen as compared to veins
(b) Angina is acute chest pain when the blood circulation to the brain is reduced
(c) Persons with blood group AB can donate blood to any person with any blood group under ABO
system
(d) Calcium ions play a very important role in blood clotting
Which two of the above statements are correct?

Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?

When monochromatic radiation of intensity I falls on a metal surface, the number of photoelectron and their maximum kinetic energy are N and T respectively. If the intensity of radiation is 2I, the number of emitted electrons and their maximum kinetic energy are respectively

A solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same height at the same time on a inclined plane. Both roll down without slipping.Which one will reach the bottom first?

Which of the following are used in gene cloning?

In human female the blastocyst

An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called :

The electric field of an electromagnetic wave in free space is given by
\(\overline{E}\)= 10cos \((({10^7}{t})+{kx})\widehat{j} \frac{V}{m}\), where t and x are in seconds and metres respectively. It can be inferred that
(a) The wavelength ? is 188.4 m
(b) The wave number k is 0.33 rad/m
(c) The wave amplitude is 10 V/m
(d) The wave is propagating along +x direction
Which one of the following pairs of statements is correct?

The thermo e.m.f. E in volts of a certain thermo-couple is found to vary with temperature difference \(\theta\) in °C between the two junctions according to the relation E=300-\(\frac{\theta^{2}}{15}\) The neutral temperature for the thermo-couple will be

When domestic sewage mixes with river water

The haemoglobin content per 100 ml of blood of a normal healthy human adult is

Root development is promoted by

The speed of light in media M1 and M2 is 1.5 × 10\(^8 m/s\) and 2.0 × 10\(^8 m/s\) respectively. A ray of light enters from medium M1 to M2 at an incidence angle i. If the ray suffers total internal reflection, the value of i is

(a) Centre of gravity (C.G.) of a body is the point at which the weight of the body acts
(b) Centre of mass coincides with the centre of gravity if the earth is assumed to have infinitely large radius
(c) To evaluate the gravitational field intensity due to any body at an external point, the entire mass of the body can be considered to be concentrated at its C.G.
(d) The radius of gyration of any body rotating about an axis is the length of the perpendicular dropped from the C.G. of the body to the axis
Which one of the following pairs of statements is correct?

Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements Statements:
(A) Wings of butterfly and birds look alike and are the results of __(i)____, evolution.
(B) Miller showed that CH4, H2, NH3 and ___(i)___, when exposed to electric discharge in a flask resulted in formation of ___(ii)_____.
(C) Vermiform appendix is a ___(i)____ organ and an __(ii)_____ evidence of evolution.
(D) According to Darwin evolution took place due to ___(i)___ and ___(ii)__ of the fittest.

An example of endomycorrhiza is

In genetic engineering, a DNA segment (gene) of interest, is transferred to the host cell through a vector. Consider the following four agents (A-D) in this regard and select the correct option about which one or more of these can be used as a vector/vectors
Statements
(A) A bacterium (B) Plasmid
(C) Plasmodium (D) Bacteriophage
Options :

A ray of light is incident on a 60\(^{\circ}\) prism at the minimum deviation position. The angle of refraction at the first face (i.e., incident face) of the prism is

The magnetic moment of a diamagnetic atom is

In which one of the following organisms its excretory organs are correctly stated?

One of the commonly used plant growth hormone is tea plantations is

Which one of the following can not be used for preparation of vaccines against plague?

For transistor action
(a) Base, emitter and collector regions should have similar size and doping concentrations.
(b) The base region must be very thin and lightly doped.
(c) The emitter-base junction is forward biased and base-collector junction is reverse baised.
(d) Both the emitter-base junction as well as the base collector junction are forward biased.
Which one of the following pairs of statements is correct?

A particle of mass M starting from rest undergoes uniform acceleration. If the speed acquired in time T is V, the power delivered to the particle is

Examine the figures A, B, C and D. In which one of the four options all the items A, B, C and D are correct?

Jaundice is a disorder of

The fruit fly Drosophila melanogaster was found to be very suitable for experimental verification of chromosomal theory of inheritance by Morgan and his colleagues because :

The additional kinetic energy to be provided to a satellite of mass m revolving around a planet of mass M, to transfer it from a circular orbit of radius R1 to another of radius R2 (R2 > R1) is

A thin circular ring of mass M and radius r is rotating about its axis with constant angular velocity \(\omega\). Two objects each of mass m are attached gently to the opposite ends of a diameter of the ring. The ring now rotates with angular velocity given by

The most apparent change during the evolutionary history of Homo sapiens is traced in

Kranz anatomy is one of the characteristics of the leaves of

The lac operon consists of

The speed of a projectile at its maximum height is half of its initial speed. The angle of projection is

Which one of the following is now being commercially produced by biotechnological procedures?

In Antirrhinum two plants with pink flowers were hybridized. The F1 plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridization? Red flower colour is determined by RR, and white by rr genes.

Crocodile and penguin are similar to Whale and Dogfish in which one of the following features?

From a circular disc of radius R and mass 9M, a small disc of mass M and radius\(\frac{R}{3}\)
is removed concentrically. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through its centre is

The correct floral formula of soybean is

Transport of food material in higher plants takes place through

Select the correct combination of the statements (a-d) regarding the characteristics of certain organisms
(a) Methanogens are Archaebacteria which produce methane in marshy areas
(b) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen
(c) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose
(d) Mycoplasma lack a cell wall and can survive without oxygen

A particle moves in x-y plane according to rule x = a sin\(\omega t\) and y = a cos\(\omega t\). The particle follows

If for some reason the parietal cells of the gut epithelium become partially non-functional, what is likely to happen?

Which one of the following is manoecious?

Which one of the following is the correct description of a certain part of a normal human skeleton?

A closely wound solenoid of 2000 turns and area of cross-section 1.5 × 10\(^{–4}m2\) carries a current of 2.0 A. It is suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field 5 × 10\(^{–2}\)tesla making an angle of (30)\(^{\circ}\) with the axis of the solenoid. The torque on the solenoid will be

Which one of the following pairs of structures is correctly matched with their correct description?

Which one of the following is most appropriately defined?

A cross in which an organism showing a dominant phenotype in crossed with the recessive parent in
order to know its genotype is called :

Vegetative propagation is Pistia occurs by

The decay constant of a radio isotope is\(\lambda\). If A\(_{1}\) and A\(_{2} \)are its activities at times t\(_{1}\) and t\(_{2}\) respectively,the number of nuclei which have decayed during the time (t\(_{1}\) – t\(_{2}\))

Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given along with

Read the following four statements, A, B, C and D and select the right option having both correct statements.
STATEMENTS:

(A) Z scheme of light reaction takes place in presence of PSI only.
(B) Only PS I is functional in cyclic photophosphorylation.
(C) Cyclic photophosphorylation results into synthesis of ATP and NADPH2
(D) Stroma lamellae lack PS II as well as NADP.

The Indian Rhinoceros is a natural inhabitant of which one of the Indian states?

The 3\(^{‘}\)-5\(^{‘}\) phosphodiester linkages inside a polynucleotide chain serve to join

A particle having a mass of 10\(^{–2} \)kg carries a charge of 5 × 10\(^{–8}\)C. The particle is given an initial horizontal velocity of 10\(^{5}\) ms\(^{–1}\) in the presence of electric field \(\overline{E}\)and magnetic field \(\overline{B}\) .To keep the particle moving in a horizontal direction, it is necessary that
(a)\(\overline{B}\) should be perpendicular to the direction of velocity and \(\overline{E}\)should be along the direction of velocity
(b) Both \(\overline{B}\)and \(\overline{E}\) should be along the direction of velocity
(c) Both \(\overline{B}\) and \(\overline{E}\) are mutually perpendicular and perpendicular to the direction of velocity
(d) \(\overline{B}\)should be along the direction of velocity and \(\overline{E}\) should be perpendicular to the direction of velocity
Which one of the following pairs of statements is possible?

Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the

Which one of the following techniques is safest for the detection of cancers?

Black (stem) rust of wheat is caused by :

A current loop consists of two identical semicircular parts each of radius R, one lying in the x-y plane and the other in x-z plane. If the current in the loop is i. The resultant magnetic field due to the two semicircular parts at their
common centre is

The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV, respectively. When two deuterium nuclei fuse to form a helium nucleus the energy released in the fusion is

Which one of the following statements about the particular entity is true?

Signals from fully developed foetus and placenta ultimately lead to parturition which requires the
release of

Secretions from which one of the following are rich in fructose, calcium and some enzymes?

Two parallel metal plates having charges +Q and –Q face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the electric field between the plates will

The electron in the hydrogen atom jumps from excited state (n = 3) to its ground state (n = 1) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1 eV, the stopping potential is estimated to be (the energy of the electron in n\(^{th}\) state \(E_{n}=-\frac{{13.6}}{n^{2}}eV\))

Study the pedigree chart of a certain family given below and select the correct conclusion which can
be drawn for the character

Select the correct matching of a hormone, its source and function.

A person suffering from a disease caused by Plasmodium, experiences recurring chill and fever at the time when?

The electric field at a distance \(\frac{{3}{R}}{2}\) from the centre of a charged conducting spherical shell of radius R is E. The electric field at a distance \(\frac{R}{2}\) from the centre of the sphere is

If \(c_{p}\) and \(c_{v}\) denote the specific heats (per unit mass) of an ideal gas of molecular weight M
where R is the molar gas constant

Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation?

In eukaryotic cell transcription, RNA splicing and RNA capping take place inside the

ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes. How many phenotypes in all are possible?

A student measures the distance traversed in free fall of a body, initially at rest in a given time. He uses this data to estimate g, the acceleration due to gravity. If the maximum percentage errors in measurement of the distance and the time are \(e_{1}\)and\(e_{2}\) respectively, the percentage error in the estimation of g is

A condenser of capacity C is charged to a potential difference of \(V_{1}\) . The plates of the condenser are then connected to an ideal inductor of inductance L. The current through the inductor when the potential difference across the condenser reduces to \( V_{2}\) is