bio final

Who developed the binomial nomenclature system?

Carolus Linnaeus

What causes animal diversity?

Variations in acient gene expression and new genes

Name a jawless vebrate

Lamprey

What were the first vertebrates to live on land?

Amphibians evolved from fish

What traits is NOT a characteristic of vertebrates: segmentation, radial symmetry, cephalization, or closed circulation?

Radial symmetry

What did two gill arches enovle into?

The jaw

What do mammals and birds both have?

Constant body temperature

In protostomes, what develops near the blastopore?

Mouth

How many tissue layers do sponges have?

Two

What is the body plan of molluscs?

Visceral mass, mantle, foot

Which phylum has the most animal diversity

Arthropoda

What are the major parts of an insect?

Head, thorax, abdomen

What group shed its exoskeleton to grow?

Ecdysozoans

What distinguishes monocots from eudicots?

Number of cotyledons (monocots have one)

What structure covers and protects a flower blud

sepals

what structure in flowers produce pollen?

Anther

What is pollination?

Transfer of pollen to stigma

What fruit type is a blackberry?

Compound fleshy fruit

What ion is associated with auxin and phototropism?

H+

What is positive phototropism?

Plant growth toward light

What hormone ripens fruit?

Ethylene

What cells are in xylem?

Tracheids and vessel elements

What transports organic nutrients in plants?

Phloem

What is transpiration?

Evaporation of water through stomata

What produces soil?

Decomposition and weathering

What are functions of roots?

Anchor plant, store nutrients, produce hormones

What root system accesses deep groundwater?

Taproot

Which phase produces gametes in plants?

Gametophyte

In gymnosperms, what disperses: seeds or spores

seeds

What stage is haploid in plants

Gametophyte

What is mircoevolution?

Change in allele frequencies over time

What creates most genetic variation?

Recombination during meiosis and fertilization

What is a random DNA change called?

Gene mutation

Which evolutionary agent improves adaptation?

Natural selection

What is speciation?

One species splits into two

What maintains species separation?

Reproductive isolation

What is the first cell formed after fertilization?

Zygote

Mules are an example of what?

Hybrid infertility

What scientist classifies organisms?

Taxonomist

What theory suggest RNA appeared first?

RNA-first hypothesis

What did the first cell give rise to?

Archaea and bacterica

What is the primary criterion in cladistics?

Shared and derived traits

What is the genus in Canis familiaris?

Canis

What domain includes mutlicellular organisms without a cell wall?

Eukarya