Question
CellsFunctions
(1) T-lymphocytes(a) Phagocytic in function
(2) Neutrophils(b) Responsible for Humoral immunity
(3) Eosinophils/Acidophils(c) Responsible for cell-medicated immunity
(4) B-lymphocytes(d) Anti-allergic [Antihistamine] in function

Answer

CellsFunctions
(1) T-lymphocytes(c) Responsible for cell-medicated immunity
(2) Neutrophils(a) Phagocytic in function
(3) Eosinophils/Acidophils(d) Anti-allergic [Antihistamine] in function
(4) B-lymphocytes(d) Anti-allergic [Antihistamine] in function

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Column AColumn B
(1) Neurons(a) Earthworm
(2) Ladder type(b) Hydra
(3) Ganglion(c) Flatworm
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Read the following and answer any four questions from (i) to (v) given below: Siddharth is a chain smoker. He got into this habit in early adolescence due to peer pressure and gradually got addicted to this habit. Its now almost 20 years he is into the habit of smoking. Since few months he is experiencing pain in chest, shortness of breath, wheezing and chronic cough with phlegm. He seeked advice of a medical practitioner who diagnosed him with lung cancer. Based on the above information, answer the following questions.
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  1. Nitrosamines
  2. Benzo(a)pyrene
  3. Hydrazine
  4. All of these
  1. How is lung cancer diagnosed?
  1. Computerised tomography scan
  2. Sputum cytolog
  3. Biopsy of lung tissue
  4. All of these
  1. From which of the following type of cancer is Siddharth suffering from?
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  2. Carcinoma
  3. Lymphoma
  4. Leukemia
  1. Select the correct statement.
  1. Surgery, radiotherapy and chemotherapy can be used to treat lung cancer.
  2. Chemotherapy involves the exposure of cancerous parts to X rays which destroy rapidly growing cancer cells.
  3. Surgical removal of lung cancer tissue is suggested at advanced stage 4.
  4. Monoclonal antibodies can effectively treat lung cancer and can cure it completely.
  1. Assertion: Lung cancer if not treated at an early stage can spread to other initial organs of the body.
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  1. Both assertion and reason are true and reason is the correct explanation of assertion.
  2. Both assertion and reason are true but reason is not the correct explanation of assertion.
  3. Assertion is true but reason is false.
  4. Both assertion and reason are false
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The vectors are DNA molecules that can carry a foreign DNA segment and replicate inside the host cell. Vectors may be plasmids, bacteriophages (viruses that attack bacteria), cosmids, yeast artificial chromosomes (YACs), Bacterial artificial chromosomes (BACs) and viruses. The most widely used, versatile, easily manipulated vector $pBR\ 322$ is an ideal plasmid vector. Features that are required to facilitate cloning into a vector includes origin of replication (Ori) which is a specific sequence of DNA bases responsible for initiating replication, selectable marker genes and cloning sites
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  3. Extension of DNA base.
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