Seed ferns thrive in humid environments. At the beginning of the Cretaceous Period, seed ferns dominated landscapes. However, towards the end of the Cretaceous Period, a large comet collided with Earth which blocked sunlight from reaching Earth’s surface. As a result of the impact, the seed ferns were wiped out.

Question

Seed ferns thrive in humid environments. At the beginning of the Cretaceous Period, seed ferns dominated landscapes. However, towards the end of the Cretaceous Period, a large comet collided with Earth which blocked sunlight from reaching Earth’s surface. As a result of the impact, the seed ferns were wiped out.

What condition on Earth led to the extinction of seed ferns?
Responses

reduction in the availability of water
reduction in the availability of water

increase in land surface for germination
increase in land surface for germination

reduction in the capability to perform photosynthesis
reduction in the capability to perform photosynthesis

increase in competition from other plant species

Answer 1

reduction in the capability to perform photosynthesis

Answer 2

The condition on Earth that led to the extinction of seed ferns was a reduction in the capability to perform photosynthesis. The impact of the comet caused sunlight to be blocked from reaching Earth's surface, resulting in a decrease in the ability of seed ferns to conduct photosynthesis, which is essential for their survival.

Answer 3

The condition on Earth that led to the extinction of seed ferns was a reduction in the capability to perform photosynthesis. Towards the end of the Cretaceous Period, a large comet collided with Earth, which resulted in the blocking of sunlight from reaching Earth's surface. Photosynthesis is the process by which plants convert sunlight into energy, and the reduction in sunlight caused by the impact would have severely impacted the ability of seed ferns to carry out photosynthesis. As a result, they were unable to produce the energy they needed to survive and eventually became extinct.