Question

The evolution of plants onto land required them to solve several problems. The first groups of plants to come up with an effective means of support on land was the

1. Mosses
2. Flowering plants
3. Angiosperms
4. Gymnosperms
5. Ferns

A unique characteristic of monocots is

1. They have secondary growth
2. They have no vascular tissue
3. They have no netted leaf veins
4. They have scattered vascular bundles
5. They are flowering plants

Osmosis is most important in the transport of

1. Sugars in the phloem
2. Sugars in the xylem
3. Water in the xylem
4. Water in the phloem
5. Hormones in the xylem

What tissue of the plant has the greatest control over the minerals that enter the vascular system?

1. Epidermis
2. Xylem
3. Phloem
4. Root hairs
5. endodermis

An Angiosperm fruit (one occurring in nature) always includes

1. Parts of the sepals and petals
2. The ovary
3. More than 10 seeds
4. Spores
5. Part of the anthers

If a plant is not growing, why can it NOT show phototropism?

1. In order to bend, cells must elongate (grow) on the dark side of the shoot.
2. In order to bend, cells must elongate on the light side of the shoot.
3. In order to bend, cells must elongate on both sides of the shoot.
4. Plants cannot bend, but must grow branches to reach the light
5. Plants must grow new leaves to respond to light

Of the groups of plants we talked about, which has species that are dominated by the gametophyte stage?

1. Ferns
2. Gymnosperms
3. Flowering plants
4. Mosses
5. Pine trees

The parenchyma in leaves is a type of what kind of tissue?

1. Vascular
2. Xylem
3. Dermal
4. Meristem
5. Ground

(If you could please explain why the answer is correct as well that would be greatly appreciated!)

Answer 1

ans 1= mosses

ans 2 =d= they have many scattered v.b. in ground tissue.

ans 3= (c) Xylem is one of the two types of transport tissue in vascular plants, phloem being the other. The basic function of xylem is to transport water from roots to stems and leaves.
The xylem, vessels and tracheids of the roots, stems and leaves are interconnected to form a continuous system of water conducting channels reaching all parts of the plants. It transports water and soluble mineral nutrients from the roots throughout the plant. It is also used to replace water lost during transpirationand photosynthesis.

ans 4=(c)The phloem, is responsible for the translocation of the nutrients like carbohydrates and amino acids from the leaves to other areas of the plants. Here, the flow is bidirectional. It moves up and down the stem. Phloem occupies the edge of the vascular bundle, as seen in the following figure. Food movement in the phloem occurs due to the pressure flow mechanism. The differences in the osmotic pressure help in the movement of food from the area of high concentration to areas of low concentration.

ans 5=(b) In botany, a fruit is the seed-bearing structure in flowering plants known as angiosperms formed from the ovary after flowering.