TRUE-FALSE QUESTIONS-IF TRUE SHADE A IF FALSE SHADEB 1. Photoautotrophs can synt
ID: 270703 • Letter: T
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TRUE-FALSE QUESTIONS-IF TRUE SHADE A IF FALSE SHADEB 1. Photoautotrophs can synthesize sugar using inorganic source of carbon and sunlight as an energy source 2. Bacterial cell walls are composed of polysaccharide similar to cellulose. 3. C hemoheterotrophs synthesize sugar by ingesting inorganic sources of carbon and using the energy released from oxidation of reduced compounds. 4. Endosymbiosis is the likely explanation for the evolution of the nuclear membrane. 5. Al Il members of the kingdom Fungi reproduce both sexually and asexually. 6. A cephalized animal has sense organs concentrated at its dorsal end. 7. A poikilohydric organism is one whose temperature varies with changes in the environment. 8. Although plants excrete oxygen and animals excrete carbon dioxide, both plants and animals generally excrete a nitrogenous waste. 9. The apoplast of plants is analogous to the intercellular fluid of animals. 10. Ectothermic organisms are also homoeothermic. 11. To conserve heat, plants and animals living arctic regions would tend to be more compact and rounder than those living in tropical regions. 12. Gametes are produced in gametophytes that are part of a gametangial plant. 13. Antheridia and archegonia are spore-producing structures on the sporophyte plant. 14. Trees, including specimens such as maple, oak or spruce, are the haploid sporophyte portion of a life cycle. gametophytes. continuous vessels. 15. Both conifers and flowering plants are heterosporous, producing two kinds of 16. The first vascular plants had a central core of vascular tissue made of fibers andExplanation / Answer
1) True: Photoautotrophs are the organism that carries out photosynthesis. They use the inorganic source of carbon dioxide and sunlight as source of energy to synthesize sugars to be used for cellular functions such as respiration and biosynthesis.
2) False: Cell wall of bacteria is made up of polysaccharide cross linked with unusual peptides containing D amino acid. This peptidoglycan cell wall is different from the cell wall of plants etc which is made up of simple cellulose and chitin.
3) True: Chemoheterotrophs cannot use carbon dioxide to synthesize their own organic molecules. Their carbon source is rather derived from ingestion of sulfur, carbohydrates, lipids, and proteins. The oxidation of inorganic compounds provide them energy.
4) True: Endosymbiotic theory suggests that all organelles of the eukaryotic organism were once free living prokaryotes and were engulfed by larger bacteria to provide them support. Nuclear envelop might have evolved in a similar manner out of the need of the nucleoid region of the once free living prokaryotes to evolve and have room for their new situation and hence, develop a nuclear envelope to form the nucleus.
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