Intro to Botany

Organismal Biology

Biol 106 - 2020 Complete prior to aending Lecture In Focus 3rd edion Q5e. This hormone then causes the ulmate response in the target ssue. In this example, what is the response to this cascade that was unleashed by the low levels of thyroid hormone? Q6. What is a “tropic” hormone? Solubility Q7. Where are the main receptors for water-soluble hormones located? Q7b. Where are the main receptors for lipid-soluble hormones located? Cytoplasm and nucleus Chapter 33: Feedback regulaon involving antagonisc hormone pairs (e.g., glucose homeostasis) Examine Figure 33.19 and answer the following: Q8a. Name the antagonisc pair of hormones involved in maintaining blood glucose levels at ~100 mg/100mL __Insulin ______________________ & ______Glucagon__________________ Q8b. State what aﬀect each as on blood sugar: _________________________ ________________________ Q8c. Name the target ssue of each: __________________________ ________________________ Q8d. Explain in what way they are “antagonisc”:

BIO | 106 | Organismal Biology | homework | Biol 106 - 2020 Complete prior

Biol 106 - 2020 Complete prior to aending Lecture In Focus 3rd edion Learn Before Lecture Chapter 27 (pp 566-583 : Animal Diversity-2 Concept 27.5 1a. What were the condions that provided opportunity for land colonizaon by animals? Life on land provided opportunities for early animal colonists. The atmosphere had higher concentrations of oxygen than did aquatic environments, and there were new sources of food such as early plants and few competitors. 1b. What were the challenges to colonizaon of land? Water was scarcer, temperature fluctuated more greatly than in aquatic environments, and there was no support against gravity. 2a. Which animal phylum was the ﬁrst to colonize land ~450 million years ago? arthropods 2b. List the four groups in this phylum who are represented in the fossil record indicang Millipedes, centipedes, spiders and insects, crabs 3a. List the 5 specialized funcons that arthropod appendages have become modiﬁed to accomplish: walking, feeding, sensory reception, reproduction and defense 3b. What two features indicate these specialized structures are, in fact, modiﬁed appendages? they are joined and come in pairs 4. What are the funcons of the rigid arthropod exoskeleton? It protects the animal and provides points of attachment for the muscles that move the appendages 5a. Describe the specialized gas exchange organs found in aquac species of arthropods: Most aquatic species have gills with thin, feathery extensions that place an extensive surface area in contact with the surrounding water. 5b. Describe the specialized gas exchange organs found in insects (an example of a terrestrial adaptaon): have tracheal systems, branched air ducts leading into the interior from pores in the cuticles 6. What is the evidence that plants played an important role in insect diversiﬁcaon? insect populaon feeding on a new plant species can diverge from other populaons, eventually forming a new species of insect. A fossil record of diverse insect mouthparts, for example, suggests that specialized modes of feeding on gymnosperms and other Carboniferous plants contributed to early adapve radiaons of insects.

Biol 106 - 2020 Complete prior to aending Lecture In Focus 3rd edion Q5b. What hormone is released in response to low thyroid hormone? (give the name) thyrotropin- releasing hormone (TRH) Q5c. What does this hormone cause to be released from the anterior pituitary gland? (give the name) to secrete thyroid-smulang hormone (TSH, also known as thyrotropin) Q5d. What does this hormone cause to be released from the thyroid gland? (give the name) thyroid hormone (T3 and T4) Q5e. This hormone then causes the ulmate response in the target ssue. In this example, what is the response to this cascade that was unleashed by the low levels of thyroid hormone? Help maintain normal blood pressure, heart rate and muscle tone; and regulate digesve and reproducve funcons. Q6. What is a “tropic” hormone? Hormones that have other endocrine glands as their target Solubility Q7. Where are the main receptors for water-soluble hormones located ? Cell membrane Q7b. Where are the main receptors for lipid-soluble hormones located? In the cytoplasm and/or nucleus Chapter 33: Feedback regulaon involving antagonisc hormone pairs (e.g., glucose homeostasis) Examine Figure 33.19 and answer the following: Q8a. Name the antagonisc pair of hormones involved in maintaining blood glucose levels at ~100 mg/100mL Insulin & glucagon Q8b. State what aﬀect each as on blood sugar -Insulin: lowers blood sugar- enhances the transport of glucose into body cells ands stimulates the liver to store glucose as glycogen -Glucagon: increases blood sugar-promotes the breakdown of glycogen in the liver and the release of glucose in the blood. Q8c. Name the target ssue of each: Insulin targets liver, muscle and adipose ssue Glucagon targets liver Q8d. Explain in what way they are “antagonisc”:  Insulin: lowers blood sugar- enhances the transport of glucose into body cells ands stimulates the liver to store glucose as glycogen  Glucagon: increases blood sugar-promotes the breakdown of glycogen in the liver and the release of glucose in the blood.

Dr. McCubbin Biol 120 Fall 2016 Exam 3 1. Which of the following is NOT an evolutionary trend in angiosperm flowers? 1. reduction in the number of floral parts 2. fusion of floral parts 3. increasing the amount of energy spent on reproduction 4. dropping the ovary below the petals and sepals 5. change in symmetry from radial to bilateral 2. Which group of compounds are the major determinants of NECTAR? 1. Flavonoids (color) 2. Essential oils (scents) 3. Sugars and amino acids 4. Lipids (pollen) 5. Starch 3. We cannot see honey/nectar guides with the naked eye, but bees can - because they can see in which wavelengths of light that we cannot? 1. UV light 2. red light 3. blue light 4. infrared light 4. Flowers produce wide variety of scents to attract pollinators, including nitrogen-containing compounds like amines, which attract _________ 1. flies 2. butterflies 3. humming birds 4. bats 5. bees 5. A strongly scented, white, night blooming, ROBUST flower would most likely be pollinated by: 1. flies 2. bats 3. butterflies 4. birds (red unscented tubular) 5. moths (change to fragile) 6. The sequence of regions in a growing root, beginning immediately behind the root cap, is: 1. elongation, maturation, cell division. 2. cell division, maturation, elongation. 3. cell division, elongation, maturation. 4. elongation, cell division, maturation. 7. Which of the following statements about the ROOT CAP of a root is TRUE? 1. It secretes mucigel 2. Root hairs form in this zone 3. The majority of cell expansion occurs in this zone 4. New cells are generated in this zone 8. Which of the following statements is FALSE in regard to MONOCOT roots? 1. The roots form a fibrous root system (good for stabilizing) 2. The root system is generally shallower than in eudicots 3. The main root system has one prominent taproot 4. They are used to help stabilize soils Dr. McCubbin Biol 120 Fall 2016 Exam 3 9. Which of the following, found in some plant roots, are indicative of a symbiotic association that provides the plant with NITROGEN? 1. Root hairs 2. Root nodules 3. Endodermis 4. Mycorrhizae (phosphorus) 5. Quiescent center 10. Which type of modified root are used by many bulbs to help protect them against freezing? 1. prop roots 2. contractile roots 3. velamen 4. buttress roots 5. pneumatophores 11. In which tissue would you find the Casparian strip? Waterproof layer 1. the pericycle (lateral roots) 2. the epidermis 3. the vascular cambium (makes xylem and phloem) 4. the endodermis Use the following images to answer questions 12-15 ABCD 12. Which of the images above could represent a section through the STEM of a MAPLE tree seedling ? C 13. Which of the images above could represent a section through a WHEAT plant ROOT? B, monocot 14. Which of the images above could represent a section through the STEM of a plant that is NOT LIKELY TO UNDERGO SECONDARY GROWTH? D 15. In which of the images above are xylem vessels present? 1. Only C 2. AandC 3. CandD 4. All of the images 16. Which cell type is the primary site of PHOTOSYNTHESIS in a leaf? 1. Spongy parenchyma (absobtion) 2. Palisade parenchyma 3. Guard cells (gas exchange) 4. Epidermis

BIO | 120 | Intro to Botany | lecture notes | Dr. McCubbin Biol 120 Fall 201

5a. List the features of the Bilaterians: complete digesve tract and a two-sided (bilat-erally symmetric) form 5b. Which phyla are part of the bilateria? molluscs, arthropods, chordates C. Concept 27.3 6. For each feature of the animal body plan, list the “opons” seen in the animal kingdom Body Plan Feature Opons a. Symmetry b. Tissues c. Body cavies 7.Examine Figure 27.10 – the current hypothesis of animal phylogeny (evoluonary relaonships) and read the narrave for this secon as well. a. Which phylum (named group at the end of a branch) is the most ancient or basal of all animals? ____________ c. Which clade (group) includes the Chordata and Echinodermata? d. Which clade includes the Platyhelminthes, Mollusca, and Annelida? e. Which clade includes the Nematoda and Arthropoda? 8. To which clade do the majority of animals belong to? ___________________ Bilaterian Radiaon I: Diverse Invertebrates Lophotrocozoa Phyla: 9. From the text, extract the following deﬁning traits for the phyla discussed: a. Three main body parts of the Mollusca: __________________ ____________________ ____________________ b. What are the three features of the arthropod body plan? Read the informaon for the phyla shown in Figure 27.11 and extract the key features of each: c. Annelida: __________________________________ d. Nematoda: __________________________________ e. Echinodermata: _____________________________________ _______________________________ D. Concept 27.4: Bilaterian Radiaon II: Aquac Vertebrates 10. List the set of derived characters shared by all Chordata (the “key characteriscs”): ________________________ ______________________ ___________________ ______________________

All courses in BIO

Popular Documents