What is the outermost structure that surounds and supports plant and fungal cells?

When analyzing tree rings, what do scientists assume a thin ring indicates?

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

Drag each tile to the correct box. arrange the layers and faults from oldest to youngest.