Question

Match each item in Column I with appropriate one/s in Column II

	Column I		Column II
A	Edward Jenner	I	Heredity
B	Chromosomes	II	Budding
C	Hydra	III	Protein biosynthesis
		IV	Smallpox vaccine
		V	Cell membrane
		VI	Binary Fission
		VII	Antibiotics

Select the correct alternative:-

• A. A-VII, B-I, C-II
• B. A-IV, B-I, C-II
• C. A-VII, B-V, C-VI
• D. A-IV, B-II, C-VI

Answer 1

The correct option is B A-IV, B-I, C-II

• The English scientist Edward Jenner (1749 - 1823), regarded as the "Father of Immunology", first introduced the "Smallpox vaccine" in 1796. In fact, the Smallpox vaccine was the first successful vaccine to be invented. Smallpox is a serious contagious disease, caused by the Variola virus. The infected people can have a high fever, body ache, vomiting, and distinctive skin rashes. The smallpox vaccine comprises of live "Vaccinia virus", which quite similar to the Smallpox virus. Jenner's invention eventually led to worldwide immunization by the Smallpox vaccine and eradication of the infectious disease.
• Heredity refers to the passing of genetic information from parents to their offspring. Genes are the basic structural and functional units of heredity. In eukaryotic organisms, the Genes remain packaged into large nuclear components, called the Chromosomes. Therefore, each Chromosome comprises many genes. That is why the chromosome is regarded as the "carrier of heredity".
  
• The Coelenterate animal Hydra can reproduce either asexually or sexually. Sexual reproduction in Hydra takes place through the formation of gametes. Asexual reproduction in Hydra is usually seen in the month of summer, especially when the animal is healthy and well-fed. Hydra reproduces asexually by means of Budding. Repeated multiplication of its body-wall cells, results in a bulging appearance near the middle, or the basal part of its body. This bulge grows as a Bud. The wall of the Bud is like an extension of the epidermis and gastrodermis the parent Hydra, while the lumen of the Bud is in continuation with the parent's gastrovascular cavity. A fully grown up Bud finally detaches from the parent's body and gradually develops into an adult Hydra.