Question 2 :
In snapdragon plants, the alleles for red and ivory flower colour show incomplete dominance. <br>When a homozygous red-flowered plant is crossed with a homozygous ivory-flowered plant, all the members of the F₁ generation are found to bear pink flowers. <br>Which of the following would be the outcome of crossing a red-flowered plant with a pink one?

Question 4 :
<p>If genes of an allelic pair are not-same. This condition is called</p>

Question 7 :
Match column-I with column-II and select the correct option from the codes given below. <table> <tbody> <tr> <td>Column-I</td> <td>Column-II</td> </tr> <tr> <td>A. Autosomal recessive trait</td> <td>I. Down&rsquo;s syndrome&nbsp;</td> </tr> <tr> <td>B. Sex-linked recessive trait</td> <td>II. Phenylketonuria&nbsp;</td> </tr> <tr> <td>C. Metabolic error&nbsp;&nbsp;linked to autosomal recessive</td> <td>III. Haemophilia</td> </tr> <tr> <td>D. Additional 21st chromosome</td> <td>IV. Sickle cell anaemia&nbsp;</td> </tr> </tbody> </table>

Question 8 :
Existence of coal / petroleum can be known from the study of

Question 9 :
<p> <font face="Cambria Math, serif">In males, pattern baldness is related to both autosomal genes as well as excessive secretion of</font></p>

Question 12 :
<p>Which of the following is a role of Sertoli cells in spermatogenesis?</p>

Question 17 :
Which of the following contraceptive also provides protection from contacting STDs and AIDS ?

Question 19 :
<p>Seed germination requires</p><p>I. Light II. Temp (suitable</p><p>III. Moisture IV. Oxygen</p><p>Select correct option</p>

Question 22 :
Assertion : The embryo sac is 7-celled, 7-nucleated structure.<br>Reason : All cells are haploid.

Question 23 :
What would be the number of chromosomes in the cells of the aleuron layer in a plant species with 8 chromosomes in its synergids?

Question 25 :
Milk secreted from the cells of alveoli of mammary lobes reaches nipple through lactiferous duct(L), mammary duct (M), mammary tubule (T) and mammary ampulla (A) in the following order.

Question 27 :
In which one of the following would you expect to find glyoxysomes?

Question 30 :
Assertion (A): placenta in addition to being a connection of mother and foetus is also aductless gland.<br />Reason(R): it releases human gonadotropins.

Question 31 :
<p> <font face="Cambria Math, serif">The nutritive cells found in seminiferous tubules are</font></p>

Question 32 :
<p> <font face="Cambria Math, serif">Neubenkern is a part to </font> </p>

Question 33 :
Which of the following has to occur if a diploid body has to produce haploid gametes?

Question 34 :
<p> <font face="Cambria Math, serif">Binding of sperm to secondary oocyte cause …A… which ensures ….B… . The words suitable to fill the blanks are</font></p>

Question 36 :
<p> <font face="Cambria Math, serif">Which of the following statements about sporopollenin is false?</font></p>

Question 37 :
<p> <font face="Cambria Math, serif">The most significant value of vegetative propagation is that:</font></p>

Question 40 :
<p> <font face="Cambria Math, serif">Infertile couples can produce a baby with the help of</font></p>

Question 41 :
Which of the following species of honeybee is reared in artificial hives?