Podcast
Questions and Answers
From where was Lupinus arcticus excavated?
From where was Lupinus arcticus excavated?
- Sahara Desert
- Gobi Desert
- Amazon Rainforest
- Arctic Tundra (correct)
Which plant, Phoenix dactylifera, was excavated at King Herod's palace?
Which plant, Phoenix dactylifera, was excavated at King Herod's palace?
- Mango tree
- Date palm (correct)
- Coconut tree
- Apple tree
After approximately how long did the seed germinate and flower?
After approximately how long did the seed germinate and flower?
- 100,000 years
- 10,000 years (correct)
- 1,000 years
- 100 years
What is apomixis?
What is apomixis?
Which type of reproduction does apomixis mimic?
Which type of reproduction does apomixis mimic?
Which of the following describes the production of more than one embryo in a seed?
Which of the following describes the production of more than one embryo in a seed?
Which of the following cells protrude into the embryo sac in some apomictic seeds?
Which of the following cells protrude into the embryo sac in some apomictic seeds?
Which of the following is an example of polyembryony?
Which of the following is an example of polyembryony?
Apomixis can be found in some species of which families?
Apomixis can be found in some species of which families?
How does a diploid egg cell develop in apomictic seed development?
How does a diploid egg cell develop in apomictic seed development?
Flashcards
Apomixis
Apomixis
Production of seeds without fertilization, a form of asexual reproduction that mimics sexual reproduction.
Polyembryony
Polyembryony
The occurrence of more than one embryo in a seed (e.g., Orange, Citrus, Mango).
Lupine
Lupine
Lupinus arcticus, excavated from Arctic Tundra.
Datm palm
Datm palm
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Study Notes
- Lupine, or Lupinus arcticus, was excavated from Arctic Tundra
- A seed germinated and flowered after 10,000 years of dormancy
- The Datm palm (Phoenix dactylifera) was excavated at King Herod's palace
- Some seeds were 2000 years old and still viable
Apomixis
- Apomixis refers to the production of seeds without fertilization
- Some species of Asteraceae and grasses are examples of apomixis
- Apomixis is a form of asexual reproduction that mimics sexual reproduction
Ways of Development of Apomictic Seeds
- A diploid egg cell is formed without reduction division and develops into an embryo without fertilization
- Nucellus cells protrude into the embryo sac and develop into embryos; citrus and mango are examples of this
Polyembryony
- Polyembryony is the occurrence of more than one embryo in a seed
- Oranges are an example of this
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