Second Year Biology Chapter 18 Short Questions Online Preparation (Reproduction)

Online Short Questions For Chapter 4 "12th Class Biology Chapter 18 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 18 Short Questions Preparation

Question # 1

Define haploid parthenogenesis.

  • Ans 1: In the honey bees male develops without fertilization of egg. The queen bee carrying male gametes from the male has the ability to lay eggs that have not been fertilized.If these eggs are not fertilized then they develops in to haploid offspring. It is called haploid parthenogenesis.
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Prepare Complete Set Wise Questions For Chapter 4 "12th Class Biology Chapter 18 Short Questions Preparation "

12th Class Biology Chapter 18 Short Questions Preparation - Set 1

Question # 1

Define haploid parthenogenesis.

  • Ans 1: In the honey bees male develops without fertilization of egg. The queen bee carrying male gametes from the male has the ability to lay eggs that have not been fertilized.If these eggs are not fertilized then they develops in to haploid offspring. It is called haploid parthenogenesis.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Question # 1

Name two sexually transmitted disease and their control.

  • Ans 1: Genital herpes and AIDS. These sexually transmitted diseases can be controlled by avoiding sexual contact with affected person and adopting the hygienic conditions and also by taking medical treatment.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 3

Question # 1

What is genital herpes?

  • Ans 1: It is caused by herpes simplex type 2 virus, most frequently transmitted by sexual contact causing infection of the genitalia. It produces genital sorness and ulcers in the infected areas. In infected pregnant women,virus can transmitted to infant during birth,causing damage to eyes and CNS of the infant.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 4

Question # 1

What are functions of sertoli cells?

  • Ans 1: Fluid secreted by sertoli cells provides liquid medium, protection and nourishment to sperms while they are in tubules.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 5

Question # 1

Give two disadvantages of cloning.

  • Ans 1: The entire organism produced by cloning are identical to each other and no genetic variability is produced.
  • Ans 2: All the organism will not show any resistant to disease if it outbreaks and all the generation will be died.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 6

Question # 1

What is tissue culture? Explain.

  • Ans 1: Growth of plant under aseptic conditions in culture medium is called tissue culture. In this technique tissue cut from the plant could be stimulated by the addition of nutrients, cytokinin, auxin, these cell show continued growth and differentiated in to a new plant.
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12th Class Biology Chapter 18 Short Questions

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