8. Which of the following is false in regards to fungi? a. most are composed of hyphae b. they function as decomposers c. they have a cell wall that is predominantly made of chitin d. they reproduce sexually and asexually e. they are photosynthetic 9. Which of the following was not one of Theophrastus's four classifications of plants? a. herb d. fern b. shrub e. tree c. undershrub 10. What is a stromatolite? a. pigments in the stroma of green algae that catalyze the dark reaction b. the floating structure in cyanobacteria c. a resting spore in cyanobacteria d. a rock-like deposition of carbonates and trapped sediments e. a thick-walled large cell that fixes atmospheric nitrogen 11. Which of the following is not true of Basidiomycota? a. they include Agaricus, Puccinia, and Ustilago b. they include the bread molds c. they reproduce by forming basidia d. they asexualy reproduce by budding, conidiospores, and fragmentation e. they are nonmotile throughout their life history 12. Cryptophytes ______________________________________________. a. are multicellular b. have chlorophylls A and C, as well as phycobilins c. have a mesokaryotic nucleus d. lack flagella e. occur only in freshwater systems 13. Which of the following is not true of Rhodophyta? a. they are multicellular b. they store floridean starch in the cytoplasm c. they have 2 whiplash flagella d. they form pit connections e. they are predominantly marine 14. The Chrysophyceae ______________________________________________. a. lack flagellated cells b. include Acnanthes, Bacillaria, and Navicula c. have chlorophylls A and B, and fucoxanthin d. are dinoflagellates e. are predominantly freshwater and include the genus Dinobryon 15. The phylum Microsporidia is best characterized as ______________________________________________. a. being arbuscular endomycorrhizae b. aseptate, endophytic organisms, example- Glomus c. fungi that reproduce by forming basidiospores d. spore forming unicellular animal parasites that shoot polar tubes into host cells e. fungi that reproduce by forming ascospores
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Which of the following characteristics is correct for fungi? - Most are composed of hyphae - They have a cell wall that is predominantly made of chitin - They reproduce sexually and asexually - They are not photosynthetic Answer: \boxed{\text{All of the above}} Show more…
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Which characteristic of fungi? Most are single-celled, live in moist areas. All of the above are characteristics of fungi. Sporophyte Decomposer Why is the relationship between mycorrhizal fungi and their host plants considered mutualistic? They live in close physical association. Both species benefit from the association. The host plant cannot live without the mycorrhizae. The mycorrhizae cannot live without the host plant. What do seeds contain? Male gametophyte and nutritive tissue. Female gametophyte and nutritive tissue. Embryo and nutritive tissue. Mature sporophyte and nutritive tissue. Haploid unicellular spores are produced via: mitosis fertilization: conjugation: 10. How can nonvascular plants survive on land without true roots? They are small enough to allow minerals to diffuse throughout their bodies. They live in moist habitats. They have a thick cuticle to prevent water loss. Both A and B. The hyphae of arbuscular mycorrhizal fungi (AMF) form bush balloon-like structures after making contact with the plasma membrane of the root cells. Why? A. They anchor the fungus inside the root; so the association is more permanent. They increase the surface area available for the transfer of nutrients. They produce toxins that protect the plant against herbivores. They break down cellulose and lignin in the plant cell wall. The sporophyte-dominated life cycle originated in: Green algae. Plants. Gymnosperms. Angiosperms. Non-vascular plants. Seedless vascular plants. 13. The appearance of cuticle and stomata are correlated with what event in the evolution of plants? The first erect growth forms. The first woody tissues. The growth of roots. The evolution of the first water-conducting tissues.
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Considering the capabilities and limitations of various microscopy techniques, which microscope would be best for studying the external structures of bacterial cells? Transmission electron microscopy (TEM), Scanning electron microscopy (SEM), Light microscope (LM), or Microscopes with equal power?
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2) What do purebred Labradors tend to inherit from their parents that other dog breeds do not? The answer is their coat color. Labradors can come in three main colors: black, yellow, and chocolate. However, Labradors can also inherit other coat colors, such as silver or charcoal, from their parents. These colors are not recognized by breed standards and are considered to be outside of the breed standard. Labradors with these non-standard coat colors are often referred to as "rare" or "unusual" Labradors. Despite their unique coat colors, these Labradors are still purebred and can be registered with kennel clubs. 2) If an animal cell lacks the ability to produce ATP, what would be the consequence? The cell would not be able to perform essential cellular functions and would eventually die. ATP is the main source of energy for cellular processes, and without it, the cell would not be able to carry out functions such as metabolism, growth, and reproduction. Additionally, ATP is required for active transport across the cell membrane and maintaining the cell's internal environment. Without ATP, the cell would quickly lose its ability to function properly and would ultimately perish. 3) Cyclic AMP is a second messenger molecule that plays a crucial role in signal transduction pathways. It is produced in response to the binding of a ligand, such as epinephrine, to a receptor on the cell membrane. Cyclic AMP then activates various enzymes and proteins within the cell, leading to a cascade of cellular responses. The correct answer to the question is A) GTP. GTP is not directly involved in the production or function of cyclic AMP. Neurotransmitters and the enzyme adenylyl cyclase are also not directly related to cyclic AMP. 4) What is cleavage furrow? A) A ring of vesicles forming a cell plate. The cleavage furrow is a groove that forms during cytokinesis in animal cells. It marks the site where the cell membrane will eventually pinch inwards to divide the cytoplasm into two separate daughter cells. The cleavage furrow is formed by the contraction of actin filaments, which create a contractile ring around the equator of the cell. As the ring contracts, it pulls the cell membrane inward, eventually leading to the complete separation of the two daughter cells. 5) Suppose you are looking at a cell through a microscope and you see a line of nuclei forming on either side of the cell plate. This cell is most likely undergoing cytokinesis. Cytokinesis is the final stage of cell division, where the cytoplasm is divided into two separate daughter cells. In animal cells, a cleavage furrow forms and gradually deepens until it completely separates the two daughter cells. In plant cells, a cell plate forms in the middle of the cell and grows outward until it reaches the cell walls, dividing the cytoplasm. The presence of nuclei forming on either side of the cell plate indicates that cytokinesis is occurring. 6) Which of the following is typically the phase during which prophase occurs? The correct answer is B) interphase. Prophase is the first phase of mitosis, the process of cell division. It is preceded by interphase, which is the period of cell growth and DNA replication. During prophase, the chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and the mitotic spindle begins to form. Prophase is followed by metaphase, anaphase, and telophase, which are the subsequent stages of mitosis.
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