Question 2 :
Which of the following parts of the flowering plants is haploid?<br/>1) Ovary 2) Pollen 3) Egg 4) Anther 5) Zygote
Question 5 :
Pentamerous, actinomorphic flowers, bicarpellary ovary with oblique septa and finit a capsule or berry are characteristic feature of
Question 9 :
If the filaments are fused in a single group the condition is
Question 21 :
Assertion: The world population was around 2 billion in 1900 which has rocketed to about 6 billion by 2000
Reason: Increase in longevity due to decline in death rate, maternal mortality rate and infant mortality rate has been some major causes of population explosion
Question 24 :
Condoms are one of the most popular contraceptives because of the following reasons.
Question 28 :
Choose the correct answer among the alternatives given :<br>Whatis the work of copper-T?
Question 41 :
Assertion: A drop in temperature do hot affect spermatogenesis.
Reason: During temperature drop the smooth muscles contracts and bring the testes closer to the pelvic cavity.
Question 46 :
Arrange male reproductive accessory organs based on the amount of secretion poured into the urethra.<br/>(I)   Prostate gland<br/>(II)  Seminal vesicles<br/>(III) Bulbourethral glands.<br/>
Question 57 :
If a cross is made between two individuals, each having genotype Bb, two offsprings are obtained. Out of these first has dominant trait. What is the probability that the second offspring will exhibit recessive trait?
Question 58 :
Among seven pairs of traits studied by Mendel, the number of traits related to flower, pod and seed were
Question 59 :
In the monohybrid cross Tt x tt, the phenotypic ratio of the progeny would be 
Question 60 :
Mendel, for his studies chose pea plants and considered many contrasting characteristics present in the pea plants. One of characteristics not considered by him was
Question 61 : The Punnett square below shows a cross between a pure tall and heterozygous tall plant. What is the total number of tall offspring represented in the Punnett square?<br/>T- tall plant<br/>t- short plant<br/><table class="wysiwyg-table"><tbody><tr><td></td><td>T</td><td>T</td></tr><tr><td>T</td><td>TT</td><td>TT</td></tr><tr><td>t</td><td>Tt</td><td>Tt</td></tr></tbody></table>
Question 63 :
The cross used to ascertain whether the plant is homozygous or heterozygous is
Question 65 :
F$_1$ generation of a cross between a red flowered plant and a white flowered plant predominantly consisted of red flowered plants indicating red flower trait is
Question 66 :
Consider the following statements (A - E)<br>A. Mendel is called the 'Father of Genetics'.<br>B. The simplest cross conducted by Mendel is the dihybrid crosses.<br>C. The dominant trait for the visible character seed colour selected by Mendel is green.<br>D. The first generation offspring is also represented as pure breeding.<br>E. Mendel's experiments are based on cross-breeding of two plants of pea differing witheach other.<br>The wrong statements are:
Question 67 :
Heterozygote tall plant (Tt) is crossed with homozygous dwarf (tt) plant. Then what will be percentage of dwarf plants in the next generation?
Question 68 :
The  grain colour of wheat is determine by the additive effects of two pairs of genes Accordingly the $F_2$ inhertance appears in the ratio of $15$ red ,$1$ white  the fifteen red appear in different shades in the ratio of 
Question 69 :
The offspring of AAbb $\times$ aaBB is crossed with aabb. The genotypic ratio of progeny will be
Question 70 :
A husband and wife have normal vision but fathers of bothof them were colour blind. Probability of their first daughterto be colour blind is
Question 71 :
Whichof the following biologists has been dubbed as the architect of molecular biology?
Question 72 :
What is the length of human DNA containing $6.6\times10^9$ bp nitrogen bases?
Question 75 :
The two strands of double helix of DNA are linked together by hydrogen bonds between
Question 76 :
Choose the correct answer from the alternatives given :<br>Ifthe sequence of nitrogen bases of the coding strand of DNA in a transcriptionunit is: 5 - A T G A AT G - 3, the sequence of bases in its RNA transcriptwould be
Question 77 :
Which one of the following is the complementary sequence for the DNA with $5'$-CGTACTA-$3'$.
Question 81 :
According to Watson-Crick model, hydrogen bonding in a double-stranded DNA occurs between.
Question 82 :
Which of the following is the co-factor for origin of life from pre-RNA?
Question 83 :
In  a dsDNA number of phosphodiester bonds are $3250$, then find the number of base pairs.
Question 84 :
In the double helix model of DNA, what would bethe distance between two consecutive base pairs?
Question 90 :
In a DNA molecule, the phosphate group is attached to ____carbon of the sugar residue of its own nucleotide and _____ carbon of the sugar residue of the next nucleotide by ____bonds.<br/>
Question 94 :
Calculate the number of nitrogen bases in E.coli, if the length of E.coli DNA is 1.36 mm.
Question 97 :
If percentage of cytosine is 18%, what will be the percentage of adenine?<br/>
Question 99 :
Nobel Prize to A. Kornberg and S. Ochoa was given for
Question 100 :
A short length of DNA molecule has 80 thymine and 80 guanine bases. The total number ofnucleotids in the DNA fragment is
