megaspore in a sentence

Examples

1. Three cells die and one that is most distant from the micropyle develops into the megaspore.
2. The plants are heterosporous with spores of two different size classes, known as megaspores and microspores.
3. Heterosporic plants, as their name suggests, bear spores of two sizes  microspores and megaspores.
4. Since an individual female spore is considerably larger than a male spore, it is termed a megaspore.
5. This megaspore becomes larger and the nucleus of it undergoes mitosis three times until there are eight nuclei.
6. Plants with heterosporous life cycles using microspores and megaspores arose independently in several plant groups during the Devonian period.
7. In heterosporous organisms, two types of spores exist : microspores give rise to males and megaspores to females.
8. The transition to ovules continued with this megaspore being " boxed in " to its sporangium while it germinates.
9. As with all seed-plants, the lyginopteridalean ovules had just one functional seed megaspore within the nucellus.
10. The surviving one develops as a megaspore and divides repeatedly to form an immature female gametophyte ( egg sac ).