Biodiversity/Organismal Biology

Question 1

Vascular Plants

Answer 1

More complex than nonvascular- have vascular tissue which transport water and nutrients- roots which absorb water, minerals, and nutrients, root hair increase surface absorption

Question 2

Mycorrhiza

Answer 2

mutualistic relationship between a fungus, and the roots of a plant- the fungus gets carbohydrates from the plant- the plants benefits from increased absorption of water and minerals

Question 3

Embryology process

Answer 3

fertilized egg undergoes cleavage to become a multicellular embryo
Later the cells differentiate and the embryo organizes in to 3 tissues or germ layers

Question 4

Layers during development

Answer 4

• Ectoderm-the outer layer gives rise to structure such as the nervous system and the outer layers of the skin
• Endoderm- inner layer- gives rise to the lining of the digestive tract and some associated structure
• Mesoderm- middle layer- forms muscle and most organ system

Question 5

Apoptosis

Answer 5

programmed cell death, which plays a role in the development of an embryo by removing certain structures (it also plays a role in killing by T cells)