Podcast
Questions and Answers
What is the significance of double fertilization in angiosperms?
What is the significance of double fertilization in angiosperms?
- Increases the number of offspring produced by the parent plant
- Ensures food store in the seed only if the egg is fertilized (correct)
- Prevents the growth of pollen tubes in the ovule
- Causes the formation of triploid zygotes
Who discovered the double fertilization mechanism in flowering plants?
Who discovered the double fertilization mechanism in flowering plants?
- Darwin
- Nawaschin (correct)
- Linnaeus
- Mendel
How does the pollen tube reach the ovule in double fertilization?
How does the pollen tube reach the ovule in double fertilization?
- By penetrating the integuments
- Through the chalaza (correct)
- By following chemical cues from the antipodal cells
- By rupturing through the embryo sac
What guides the growth of the pollen tube towards the ovule?
What guides the growth of the pollen tube towards the ovule?
What is the term used when the pollen tube carrying male gametes penetrates one of the synergids?
What is the term used when the pollen tube carrying male gametes penetrates one of the synergids?
What happens after the pollen tube ruptures in double fertilization?
What happens after the pollen tube ruptures in double fertilization?
What is the main difference between syngamy and triple fusion in angiospermic plants?
What is the main difference between syngamy and triple fusion in angiospermic plants?
What is the outcome of syngamy during double fertilization in angiospermic plants?
What is the outcome of syngamy during double fertilization in angiospermic plants?
Which process leads to the development of the triploid endosperm in angiospermic plants?
Which process leads to the development of the triploid endosperm in angiospermic plants?
Which term describes the fusion event where the second male gamete fuses with the diploid secondary nucleus in angiospermic plants?
Which term describes the fusion event where the second male gamete fuses with the diploid secondary nucleus in angiospermic plants?
Why is double fertilization in angiosperms described as involving 'both male gametes'?
Why is double fertilization in angiosperms described as involving 'both male gametes'?
