Yes you are correct.
I want you to read this:
Wood Release, or Mokuton, techniques combine Earth Release and Water Release to produce wood. Wood Release techniques can be produced from any source of earth or water and even the user's body, as the user's chakra is literally converted into a source of life. Wood techniques also appear to be extremely resistant to bijū chakra and can even, to some extent, surpress it. Wood Release is commonly affiliated with the Snake hand-seal. Hashirama Senju was the original user of this ability, evidenced by the fact that none of his relatives have been shown capable of using Wood Release. His ability to use these techniques was one of the reasons for him being given the title of the First Hokage, and with Wood Release Secret Technique: Nativity of a World of Trees he was able to grow the trees that served as the literal foundation of Konohagakure. Orochimaru, in his quest to harvest the First Hokage's abilities, injected his DNA into sixty test subjects, and out of the sixty only Yamato survived. This gave Yamato the Wood Release abilities. However, he is not as masterful as the First. Orochimaru also performed a similar procedure on Danzou Shimura by implanting the First's cells in his right arm. While Danzō is capable of using this power at a similar level to Yamato, it appears to drain Danzō more significantly with each usage. It was then discovered that Madara, while presumed dead at Hashirama's hands, somehow survived and managed to implant Hashirama's cells into his chest. By doing this, he eventually gained control over the cells and the ability to use Wood Release, even using techniques known only to Hashirama. After Obito Uchiha got half his body crushed, Madara merged him with a White Zetsu clone to replace his crushed half. By controlling the implanted cells, Obito gained use of Wood Release as well, albeit to a degree much more comparable to Yamato's usage rather than Madara's usage.
It's also important for you to know its Strengths and Weaknessess:
Wood
Weak to: Lightning which will cut through it, turning it into shreds. Neutral to Fire.
Strong to: Bijuu Chakra, Earth and Water. Wood can infiltrate and break Earth apart while on the other hand its highly resistant to Water. It has also been seen to actually have chakra suppressing abilities against Bijuu and raw Bijuu Chakra techniques like the Menacing Ball or even the chakra shrouds used by Bijuu.
Real through and ask questions