1 Put in order from oldest event to most recent event the fo

1. Put in order, from oldest event to most recent event, the following evolutionary adaptations that occurred as plants adapted to land.
1 - seeds
2 - flowers
3 - vascular tissue
4 - multicellular sporophyte

3, 4, 2, 1

4, 2, 3, 1

3, 4, 1, 2

4, 3, 1, 2

E

.

2. While hiking through the woods, you attempt to identify the types of plants you encounter to impress your friends. One of your friends finds a small plant with beautiful lacy leaves and wants you to figure out what it is. There are no flowers or seeds anywhere associated with the plant. Back at the lab, you make a cross section of the major leaf vein, and see there is a vascular column down the middle. You also notice small brown dots on the underside of the leaves. What type of plant is this most likely?

A gymnosperm

A fern

An angiosperm

A moss

1, 2, 3, 4

Solution

1.

Evolution of plants to adapt features to survive on land from oldest to recent include vascular tissue, multicellular sporophyte, seeds and flowers. The evolution of vascular tissue enabled the plants to absorption and conduction of water and nutrients from soil through roots. Later, development of sporophyte, seeds and flowers enables plants for better pollination and propagation. Option C is correct.

2.

The small plant showing vascular tissue in cross section might belong first vascular plants or a fern belonging to pteridophytes. The other feature, brown dots underside of leaves represent the ferns. In ferns, the leaves bear the sori which are small dark colored structures. The plant is most likely to be the fern. Option B is correct.