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Leaves of Bryophyllum fallen on the ground produce new plants. Why?
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0
|
3094
|
September 22, 2016
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|
Differentiate between self-pollination and Cross-pollination
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0
|
13153
|
September 22, 2016
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What is the function of copper - T used by some women ? What is its side effect?
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0
|
2317
|
September 22, 2016
|
|
What happens to the following parts after fertilization?
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|
1
|
4885
|
September 22, 2016
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Name the type of asexual reproduction in:
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1
|
1316
|
September 22, 2016
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Differentiate between plumule and radicle
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0
|
4861
|
September 22, 2016
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|
What is vegetative propagation?
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|
1
|
3703
|
September 22, 2016
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|
"The consistency of DNA copying during reproduction is important for the maintenance of body design features." Support this statement with two arguments
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0
|
9660
|
September 22, 2016
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State the importance of chromosomal difference between sperms and eggs of humans
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0
|
5033
|
September 22, 2016
|
|
Differentiate between binary fission and multiple fission
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0
|
43963
|
September 22, 2016
|
|
List any two differences between pollination and Fertilization
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0
|
18598
|
September 22, 2016
|
|
Describe the role of the following in human beings:
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|
1
|
2007
|
September 22, 2016
|
|
Define variation in relation to a species. Why is variation beneficial to the species?
|
|
0
|
7083
|
September 22, 2016
|
|
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement
|
|
0
|
3657
|
September 22, 2016
|
|
Draw labelled diagrams to illustrate budding in Hydra
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|
0
|
9886
|
September 22, 2016
|
|
What is the main difference between sperms and eggs of humans ? Write the importance of this difference
|
|
0
|
8235
|
September 22, 2016
|
|
Give an account of the process adopted by Mendeleev for the classification of elements. How did he arrive at "Periodic Law"?
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0
|
2706
|
September 22, 2016
|
|
Which group of elements could be placed in Mendeleev's Periodic Table without disturbing the original order ? Give reason
|
|
0
|
4880
|
September 22, 2016
|
|
An element X of group 15 exists as diatomic molecule and combines with hydrogen at 773 K
|
|
1
|
8023
|
September 22, 2016
|
|
An element X which is a yellow solid at room temperature shows catenation and allotropy
|
|
1
|
9281
|
September 22, 2016
|
|
An element X (atomic number 17) reacts with element Y (atomic number 20) to form a divalent halide
|
|
1
|
25097
|
September 22, 2016
|
|
An element is placed in 2nd Group and 3rd Period of the Periodic Table, bums in presence of oxygen to form a basic oxide
|
|
1
|
14973
|
September 22, 2016
|
|
Identify the elements with the following property and arrange them in increasing order of their reactivity:
|
|
1
|
3212
|
September 22, 2016
|
|
Arrange the following elements in the increasing order of their metallic character:
|
|
0
|
2250
|
September 22, 2016
|
|
Identify and name the metals out of the following elements whose electronic configurations are given below:
|
|
1
|
1028
|
September 22, 2016
|
|
Arrange the following elements in increasing order of their atomic radii:
|
|
1
|
4570
|
September 22, 2016
|
|
Compare the radii of two species X and Y. Give reasons for your answer
|
|
1
|
2111
|
September 22, 2016
|
|
If an element X is placed in group 14, what will be the formula and the nature of bonding of its chloride?
|
|
0
|
1413
|
September 22, 2016
|
|
Write the formulae of chlorides of Eka-silicon and Eka-aluminium, the elements predicted by Mendeleev
|
|
0
|
1585
|
September 22, 2016
|
|
"Hydrogen occupies a unique position in Modem Periodic Table". Justify the statement
|
|
0
|
1682
|
September 22, 2016
|