KA 3: Reproduction

• What are the two matching sets of chromosomes in most cell types called?

  Diploid
• What type of cells do multicellular organisms produce for sexual reproduction?

  Gametes (sex cells)
• What is the chromosome set of male and female gametes?

  Haploid
• Where are the sexual reproductive organs of flowering plants found?

  In the flower
• Where are male gametes found in flowering plants?

  Inside pollen grains in the anther
• Where are female gametes produced in flowering plants?

  Inside ovules in the ovaries
• What is the process of transferring pollen called?

  Pollination
• What happens after pollen lands on the stigma?

  A pollen tube grows into the ovary
• What occurs during fertilization in flowering plants?

  The male sex cell nucleus fuses with the ovum nucleus
• What are the sex cells in animals called?

  Gametes
• What is the female gamete in animals called?

  Ovum (or egg)
• How does the size of the ovum compare to the sperm cell?

  The ovum is larger than the sperm cell
• What are the components of both sperm and ovum cells?

  Nucleus, cytoplasm, and cell membrane
• Where are sperm cells produced in mammals?

  In the testes
• Where are ova produced in mammals?

  In the ovaries
• What do haploid gametes form during sexual reproduction?

  A diploid zygote (fertilized egg)
• What develops from the diploid zygote?

  An offspring
• What are the key differences between male and female gametes in animals?

  • Male gamete: Sperm cell
  • Smaller
  • Has a tail
  • Female gamete: Ovum (egg)
  • Larger
  • Contains food store
• Label this diagram.

  Sites of gamete production in flowering plants

  A) Stigma

  B) Anther

  C) (with pollen grains)

  D) Ovary

  E) (with ovules)

  
• Label this diagram.

  Sites of gamete production in humans.

  A) Testis

  B) (containing sperm cells)

  C) Ovary

  D) (Containing ova)