The most accurate statement about ferns is that scientist have found several hundreds species of ferns.
Ferns are the vascular plants that has less ecological importance but they are used as food, medicine, biofertilizer. They belong to a group of vascular plants and they are approximately 10, 560 species of exact known species of ferns. Ferns were first observed in the fossil record about 360 million years ago.
Answer:
his theory although not proven led people to question what they had been taught making more sophisticated ideas.
Explanation:
The identification is based primarily on the analysis of one or two regions of the ribosomal DNA: sequencing of the D1 / D2 domains of the 28S rRNA gene and / or of the ITS region (ITS1 and ITS2 intergenic spaces and that includes the 5.8S rRNA gene ). Its comparison with the sequences available in public databases allows the strains to be assigned to a specific species when the homology percentage of its sequences is greater than or equal to 99%.
Answer:
Option b
Explanation:
__RGB__ mixing is a common method of producing color by varying the quantities of three input.
For specialized applications such as LCD back lighting or projection images, and applications requiring dynamic color control, RGB mixing is the preferred choice.
Reference: Steigerwald, Daniel A., et al. "Illumination with solid state lighting technology." IEEE journal of selected topics in quantum electronics 8.2 (2002): 310-320.
