Question 1 :
How many meiotic divisions will be necessary to produce two hundred pollen grains

Question 2 :
Arrange the following events of meiosis in correct sequence<br>(A) Crossing over<br>(B) Synapsis<br>(C) Terminalisation of chiasmata<br>(D) Disappearance of nucleolus

Question 3 :
Assertion : Coenzymes are also called prosthetic groups.<br>Reason : Coenzymes and prosthetic groups are cofactors.

Question 4 :
Scavenging of worn out cell parts and denatured proteins in the cells is done by

Question 5 :
Which one of the following structural formulae (A &amp; B) of two organic compounds is correctly identified along with its related function?<br /><img style='object-fit:contain' src="https://s3.ap-south-1.amazonaws.com/me-p/5f4ce53f16d7e6154e45107a.jpg" /><img style='object-fit:contain' src="https://s3.ap-south-1.amazonaws.com/me-p/5f4ce55d16d7e6154e45107b.jpg" />

Question 6 :
<p>Arrange the steps of catalytic action of an enzyme in order and choose the correct option.</p><p>I. The enzyme releases the products of the reaction and the enzyme is free for another substrate.</p><p>II. The active site of enzyme is in close proximity of the substrate and breaks of chemical bonds of the substrate.</p><p>III. The binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate.</p><p>IV. The substrate binds to the active site of the enzyme fitting into the active site.</p>

Question 8 :
Which of the following event takes place during diplotene stage of prophase I of meosis

Question 11 :
The connecting link among glycolysis, Kreb's cycle and beta - oxidation of fatty acid is.<br>Or <br>Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins .

Question 18 :
<p>During water absorption from the soil, the water potential of the root cell is…..than the soil</p>

Question 20 :
Why are the absorption spectrum of Chl a and the action spectrum of photosynthesis is identical?

Question 22 :
<p>First biochemical to be produced commercially by microbial cloning and genetic engineering is:</p>

Question 24 :
Which of the following is the correct sequence of PCR or polymerase chain reaction?

Question 25 :
<p>Which of the following terms is used to describe the component isolated from a plant, for in vitro culturing in the specific medium?</p>

Question 26 :
Which of the following statements is/are correct with regard to the disadvantages of GM crops?

Question 28 :
The thermostable enzymes, Taq and Pfu, isolated from thermophilic bacteria are

Question 29 :
Which of the following risks are associated with genetically modified foods?

Question 33 :
Because most of the amino acids are represented by more than one codon, the genetic code is

Question 34 :
Match the Column I with Column II - <table><tr><td>Column I</td><td>Column II</td></tr><tr><td>I. Human embryos have gill </td><td>A. Chemical evolution </td></tr><tr><td>II. Oparin and Haldane </td><td>B. Stimulation experiment </td></tr><tr><td>III.Miller and Urey </td><td>C. Wings of bird and butterfly </td></tr><tr><td>IV.Analogous organs </td><td>D. Outogeny repeats phylogeny</table>

Question 35 :
In order to find out the different types of gametes produced by a pea plant having the genotype AaBb, it should be crossed be crossed to a plant with the genotype

Question 36 :
<p>Which of the given pairs are correct</p><p>I. Wings of insects and birds are homologous organ</p><p>II. Wings of bats and bird are homologous organ</p><p>III. Wings of insect and bats are analogous</p><p>IV. Wings of insect and bird are analogous</p><p>Choose the correct option</p>

Question 37 :
The Human Genome Project as megaproject was a 13 year project coordinated by the

Question 41 :
Norepinephrine<br>(i) is released by sympathetic fibers<br>(ii) is released by parasympathetic fibers<br>(iii) increases the heart rate<br>(iv) decreases blood pressure.<br>Which of the above statements are correct?

Question 43 :
{tex}\mathbf{Assertion}{/tex} : Circular smooth muscles of iris contract when bright light falls on the eye.<br>{tex}\mathbf{Reason}{/tex} : Pupil gets constricted by the contraction of circular smooth muscles of iris.

Question 44 :
The given diagram represents the bones of human arm. Identify the bones marked as I, II, III &amp; IV. <br /><img style='object-fit:contain' src="https://s3.ap-south-1.amazonaws.com/me-p/5f6d8af316d7e6154e458bd4.jpg" /><br />I II III IV

Question 45 :
<p>A neuron is said to be in resting state when,</p><p>I. it is not conducting any impulse</p><p>II. plasma membrane is electrically positive outside and negative inside</p><p>III. the nerve fibre is stimulated mechanically or electrically</p><p>IV. plasma membrane is negative outside and positive inside</p><p>The correct option is</p>

Question 47 :
During oxygen transport the oxyhaemoglobin at the tissue level liberates oxygen to the cells because in tissue

Question 48 :
Assertion : Vital capacity is higher in athletes than non-athletes.<br>Reason : Vital capacity is about 3.5-4.5 litres in a normal adult person.

Question 52 :
<p>Water hyacinth <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ecfab43c78948089f83782f"/>was introduced in Indian water to reduce pollution. It is an example of</p>

Question 53 :
<p>Which of the following is not done in a wildlife sanctuary?</p>

Question 54 :
<p>The number of species of birds in Columbia, located near the equator is</p>

Question 55 :
Which of the following statements is false?<br>I. Light is essential for life to exist on the earth.<br>II. Many species of small plant under the canopy to tall trees in forest show optimal use of available light due to having large sized antenna and higher number of thylakoids.<br>III. UV-rays is not harmful for many organism. <br>IV. Photoperiodic requirement is not essential for many plant for flowering.<br>V. Sun is the source of light and temperature for land. <br>VI. Red algae can live in deeper water of sea because of having pigment, phycoerythrin