BEYOND TRICOLOUR

Beyond tricolor

There was a debate in the media that India is a banana republic.If after so many years we are not capable to create a transparent system ,justice is delayed,honest officers are victimized by politicians then this debate has its significance.Every year to salute the tricolor and then sit quietly if this  the only way to celebrate independence day then i think we should stop this tradition.If all the politicians can live like an ordinary man for 24 hours then  they can understand the problems of common man.Democracy is good only for those countries where people are literate and mature.In India one bottle of ethyl alcohol and 100 Rs note is more then enough to change the mind of voter.Under these circumstances we have to think actively about voting system.Reservation for backward classes or uniform schooling for all sections of society out of these two options time has come to choose one, otherwise this country will burn in this tug of war between general and backward classes.lets improve the quality of this republic by choosing right candidates in the coming elections. 

Memories

Memories   

 Memories are not faded with the mist
The melancholic easeful feelings
are intensified by the lamps and lights of love.
Emptiness is casting my days and nights.
The void is purified by the chastity of my tears and touch.
Life is fragile but my transient names and recognition cranes for appreciation,
Adieu Adieu but the farewell song sings
The strain of praise of the pole star
The guiding star,the brightness and the most allured among all who are blinking in the ether.
Memory lanes meet so many faces
But your glowing,innocent visage enlivens me with my life force.

CBSE BIOLOGY-XI

SECTION-A

1. What is meiocyte?2. In which phase of the interphase, the DNA contents of the cell become double?
3. What are dictyosomes?
4. What does Omnis cellula-e-cellula means?
5. Which polysaccharide constitutes the cell wall in fungi?

                                                                     SECTION-B

6. Who proposed the cell theory? List its postulates.

7. Draw a neat and labeled diagram of plastid.

8. What is synaptonemal complex? Give its significance.

SECTION-C

9. Describe the ultra structure of nucleus. Give its two functions.

10. Compare a plant cell and an animal cell.

11. Why plasma membrane is called semi permeable membrane? Give its significance.

SECTION-D

12. i) Describe the following-a) Synapsis

b) Bivalent

c) ChiasmataDraw a diagram to illustrate your answer. 
ii) Discuss prophase-1 of meiosis -1 with the help of well labeled sketches.

PRACTICE CBSE BIOLOGY

CBSE BIOLOGY

CLASS XII

SECTION-A

1.         What is gene pool?

2.         Name the scientist whose work influenced Darwin.

3.         Who disproved the theory of spontaneous generation?

4.         What is modern Biotechnology?

5.         What is meant by elution?

SECTION-B

6.         What is a palindrome in a DNA? Give an example.

7.         Explain the origin of universe. How old is the universe?

8.         What are two core technologies that enabled the birth of modern biotechnology?

SECTION-C

9.         State the principle underlying gel electrophoresis and mention two applications of this technique in Biotechnology.

10.     Draw a diagram of the experimental set up used by Miller and Urey in their experiment to prove chemical origin of life and also explain the experiment.

11.     What are restriction enzymes? Name and define their two types.

SECTION -D

12.     a) Trace out the various components of human evolution.

b) Differentiate between convergent and divergent evolution.

CBSE BIOLOGY

CLASS XI

SECTION-A

1.         Why are erythrocytes able to carry out anaerobic metabolism only?

2.         Which disease is caused on inhaling excessive cigarette smoke?

3.         Write the chemical reaction catalysed by zinc-enzyme, carbonic anhydrase

4.         What are chylomicrons?

5.         Name the bile pigments.

SECTION-B

6.         How are following enzymes activated in the alimentary canal-

a) Pepsin

b) Renin

c) Trypsin

d) Chemotrypsin

7.         Write a short note on occupational lung disease?

8.         What is tidal volume? Find out the tidal volume for a healthy human.

SECTION-C

9.         Describe the histological structure of alimentary canal.

10.     State the role of pancreatic juice in the digestion of proteins

11.     How is oxygen transported in the blood and released in the tissue?

SECTION -D

12.     a) Describe briefly the disorders of digestive system

b) What would happen if HCL were not secreted in the stomach?