| 1 | In absence of fertilization, corpus luteum degenerates into ........ Answer: corpus albicans |
| 2 | Histones are rich in Answer: Lysine and Arginine |
| 3 | During replication of DNA, the separated strands are prevented from recoiling by using ….. Answer: single strand binding protein |
| 4 | While playing cricket Raju faces a problem of severe pain and heaviness in the-chest. Pain spreads from neck, lower jaw, left arm and to left shoulder. From above symptoms identify disease: Answer: Angina pectoris |
| 5 | —-----Layer is in close contact with CNS in human beings. Answer: Dura Matter |
| 6 | Annealing step of PCR, operates at .......с. Answer: 40-60 |
| 7 | Which of the following is the only gaseous plant growth regulator? Answer: Ethylene |
| 8 | What happens in In Hamburger's phenomenon Answer: CI- diffuse into RBCs |
| 9 | What are vestigeal organs? |
| 10 | Distinguish between heterochromatin and euchromatin with reference to staining property and activity. |
| 11 | Differentiate between X-chromosome and Y-chromosome. |
| 12 | Draw a suitable diagram of replication of eukaryotic DNA and label any three parts. |
| 13 | Draw a neat and proportionate diagram of root hair and label mitochondria, nucleus and vacuole. |
| 14 | Distinguish between human sperm and ovum. |
| 15 | Distinguish between artery and vein. |
| 16 | What is blood pressure? add a note on factors affecting it. |
| 17 | With the help of neat, labelled diagram describe the human female reproductive system. |
| 18 | Identify chromosomal disorder caused due to non-disjunction of 21st number of chromosomes and enlist its symptoms. |
| 19 | Describe the steps of PCR. |
| 20 | Explain cardiac cycle. |
| 21 | Draw a neat diagram of the conducting system of the human heart and label AV node, Bundle of His and Purkinje fibres. |
| 22 | What is Reproductive Isolation? Describe its any two types |
| 23 | Explain homologous and analogous organs. |
| 24 | Draw a Diagram of Root Hair, Neucleus, and Mitochondria |
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