Question

QUESTION 9

In the Gulf of Mexico, red tides caused by the dinoflagellate Karenia brevis cause massive fish kills as well as respiratory problems in humans. As an environmental scientist, what would you suggest concerned citizens do to help prevent these red tides?

		purchase fuel-efficient vehicles
		decrease the amount of artificial light in coastal areas
		encourage sustainable fishing
		reduce fertilizer use on lawns and gardens
		participate in beach cleanup efforts

10 points   

QUESTION 10

In a zygotic life cycle

		Haploid cells form gametes that fuse to produce thick-walled diploid zygotes capable of surviving stressful conditions.
		there is an alternation of generations
		The zygote undergoes meiosis and produces many heat-resistant spores that increase the population size and aid in dispersal.
		Haploid cells form spores that in turn fuse to produce thick-walled zygotes capable of surviving stressful conditions.

QUESTION 1

While on an expedition to Borneo, you have discovered a plant that appears to have two free-living multicellular generations, water transporting cells, and motile sperm. It is probably most closely related to what group of plants?

		mosses
		liverworts
		ferns
		pine trees

10 points   

QUESTION 2

All of the following are considered evolutionary advantages of seeds except

		they allow for a period of dormancy when conditions are unfavorable
		they can have modifications of the seed coat that can promote dispersal of offspring.
		they provide an additional site of nutrient synthesis for the parent plant
		their development is not limited by sperm having to swim through water to reach the egg.

Answer 1

Question 9 - reduce fertilizer use on lawns and gardens

Question 10 - Zygotic life cycle also called haplontic life cycle, it involve haploid cells. Haploid cells form gametes that fuse to produce thick-walled diploid zygotes capable of surviving stressful conditions.

Question 1- multicellular generation means alteration generation ,  water transporting cells means it have vascular system, and motile sperm it means its a gymnospem so its answer is pine trees.

Question 2- they provide an additional site of nutrient synthesis for the parent plant