The correct answer is option 'B': They are dome-shaped.

Explanation:
- Hilly trees like the Pine can be found in hilly regions and have certain characteristics that differentiate them from other types of trees.
- Let's go through each statement to determine which one is false:

a) They do not have flowers:
- This statement is true. Hilly trees like the Pine are conifers, which means they reproduce through the use of cones rather than flowers. The cones contain the seeds for reproduction.

b) They are dome-shaped:
- This statement is false. Hilly trees like the Pine do not have a dome-shaped appearance. Instead, they have a tall and erect growth habit with a straight trunk. The branches of the tree are typically arranged in layers, with the lower branches being longer and the upper branches shorter. This gives the tree a pyramidal or triangular shape.

c) They are conifers:
- This statement is true. Hilly trees like the Pine belong to the coniferous group of trees. Conifers are characterized by their needle-like leaves, cones, and typically evergreen nature. They are known for their ability to thrive in colder climates and are often found in hilly or mountainous regions.

d) Their leaves are needle-shaped:
- This statement is true. Hilly trees like the Pine have needle-shaped leaves. The needle-like leaves are an adaptation to cold climates, as they help reduce water loss through transpiration. The needles also have a waxy coating that further helps to retain moisture.

In conclusion, the false statement regarding hilly trees like the Pine is that they are dome-shaped (option 'B'). Hilly trees like the Pine have a tall and erect growth habit with a pyramidal or triangular shape.

A They do not have flower