Exam 19: A Slow Unfolding: the History of Life on Earth

Organisms from which kingdom or domain were the first photosynthesizers?

Some of the earliest true land plants lacked roots or a vascular system.The implication of this would be that they:

What is the significance of finding evidence that zirconium/uranium rocks formed in water 4.2 million years ago?

Refer to the figure below, and then answer the question that follows. -The missing label indicated with a question mark in the figure should be:

An important characteristic common to most primates is:

A major difference between cells of organisms in Domain Eukarya and the cells of those in Domains Bacteria and Archaea is that:

Which of the following would support a hypothesis that insects preceded amphibians on land and were flourishing when the first amphibians evolved?

The early primates were specialized for life in the ________.

Vascular tissue is important for both efficient water distribution and taller growth in plants.

Life first evolved in and the earliest forms of life lived in ________.

Early mammals differed from reptiles in many respects,including:

Which group of animals is the most recent to evolve?

Some of the more advanced organisms in Domains Bacteria and Archaea have a nucleus.

A major event in the Precambrian era responsible for dramatically increasing organic material on Earth was:

Which of these gases was absent in the early Earth atmosphere at the time life first appeared?

Laboratory experiments suggest that many of the kinds of organic molecules needed to form the first forms of life could have been made nonbiologically in Earth's early history.

List three characteristics of all non-ape primates,and state an advantage for each of these characteristics.

Before the development of photosynthesis and as ancient cells became crowded,there was probably a major competition for:

Refer to the figure below, and then answer the question that follows. -The missing label indicated with a question mark in the figure should be: