Question

in animal cells and in the meristem cells of land plants, the nuclear envelope disintegrates during mitosis. This disintegration does occur in the cells of most protists. According to our current knowledge of plant evolution, which group of organism should show mitosis most similar to land plants?

A) red algae

B) unicellular chlorophytes

C) charophytes

D) multicellular chlorophytes

12) The earliest land plants faced many challenges when they first tried to survive on land, however ____ was most definitely not one of them.

A) dessication

B) obtaining adequate light

C) sperm transfer

D) animal predation

13) working from deep geologic strata toward shallow strata, what is the sequence in which fossils of these groups should make their appearance?

1) charophytes

2) single celled chlorphytes

3) bryophytes

4) plants with a dominant sporophytes

A) 1 -3 -2 -4

B) 2-1-3-4

C) 3-2-4-1

D) 2-4-1-3

14. you are a botanist studying a new plant species discovered in the hot and dry American southwest which adaptation is the least useful for such a plant that endures water shorages?

A) Mycorrhizae associated with root systems.

B) the ability to close the stomata during the hottest part of the day

C) A thick waxy cuticle on the epidermis

D) The development of large leaf surfaces.

15. you find a plant growing in a dense forest, what adaptation would be most useful for the plant to obtain adequate light exposure?

A) flower

B) lack of petioles

C) apical dominance

D) Lateral buds.

Answer 1

11. ans is C. Cell division in land plants is more similar to charophyte cell division than other algal cell division.

12. The earliest land plants faced many challenges when they first tried to survive on land, however obtaining adequate light was most definitely not one of them.

13. ans is B) 2-1-3-4 single-celled chlorphytes, charophytes, bryophytes, plants with dominant sporophyte

14. ans is D. Mycorrhizae are symbiotic relationships that form between fungi and plants. The fungi colonize the root system of a host plant, providing increased water and nutrient absorption capabilities while the plant provides the fungus with carbohydrates formed from photosynthesis.
Waxy cuticle and closure of the stomata prevent loss of water through transpiration. Plants tend to have spikes instead of leaves. This allows for reduced surface area, which in turn reduces water loss through transpiration.

15. For a plant growing in a dense forest, apical dominance would be most useful to obtain adequate light exposure. Th shoot apex inhibits the growth of lateral buds allowing the plant to grow vertically and to get more sunlight.