Forestry and Plant Sciences

Oak trees are actually struck by lightning MORE frequently than most other tree species. Their tall height, high moisture content, deep root systems, and wood structure make them excellent lightning conductors. The statement claims other trees are struck more, which is incorrect.

From 'No tree is edible' and 'Some trees are green', we know that among green things (which include some trees), there exist some that are not edible (the trees, since no trees are edible). Therefore, some green things are not edible. Option A is incorrect because we only know that trees (which are green) are not edible, not that ALL green things are inedible.

Bonsai is the Japanese art form of growing dwarf trees or woody plants in containers. Using techniques like pruning, wiring, and root restriction, bonsai artists create miniature versions of full-sized trees while maintaining their aesthetic proportions. It requires patience and skill to maintain these living art pieces.

The world's oldest known living individual tree is Old Tjikko, a Norway spruce in Sweden, estimated at 9,550 years old. Methuselah is a very old bristlecone pine (about 4,850 years), but the Swedish spruce is significantly older. The Senator was a bald cypress destroyed in 2012.

Tree age is determined by counting annual growth rings in the trunk's cross-section. Each ring represents one year of growth, with light-colored rings forming in spring and darker rings in late summer. This scientific method is called dendrochronology. Height and diameter change throughout a tree's life and don't indicate age, while sap analysis reveals health but not age.

Alder (Alnus nepalensis) is the state tree of Nagaland. It's a tree species commonly found in the northeastern Himalayan region.

The Banyan Tree (Ficus benghalensis) is India's national tree, not Mango, Apple, or Cotton trees. The banyan tree was chosen for its longevity and cultural importance in Indian tradition.

If all trees in the park are flowering, and dogwoods are a subset of the trees in the park, then those dogwoods must be flowering trees. The logic is a simple syllogism.

The passage explicitly states that the Pacific yew has a 'poisonous fruit'. Therefore, it must be true that people should not eat it. While taxol is an anticancer drug, the text does not claim it is poisonous to healthy people or that the tree was previously considered worthless.

Coastal redwoods are the tallest trees on Earth (reaching over 380 feet), and their thick, fibrous bark provides excellent fire resistance, allowing them to survive wildfires that kill other trees. However, they are not the 'only' fireproof trees - giant sequoias and several other species also have fire-resistant bark. The question overstates uniqueness.

Trees produce annual growth rings in their stems due to seasonal variations in cambium activity. In temperate regions, spring wood (lighter, larger cells) and summer/autumn wood (darker, denser cells) form distinct rings. Counting these rings from the center to the bark gives the tree's age. Height and diameter are poor age indicators.

Papyrus was made from the papyrus plant, a wetland sedge that grew abundantly along the Nile River. The plant's stem was cut into strips, layered, and pressed to create the writing material. It was not made from any type of tree.

Oak trees typically begin producing acorns between 20-50 years of age, depending on the species. Many species like pin oak and red oak start producing acorns around 20-25 years old. The claim that they don't produce acorns until 50+ years is incorrect.

Trees grow annual rings (growth rings) in their stems/trunks due to seasonal variations in growth. By counting these rings, you can determine the age of a tree. Each ring represents one year of growth, with lighter wood forming in spring and darker wood in late summer/fall.