17. Cnidarians have surface cells called choanocytes that contain prey capturing

Question

17. Cnidarians have surface cells called choanocytes that contain prey capturing structures known as nematocycts 18. Th e coelom of most deuterostomes develops from outpocketings of the endoderm of the gut. 19. Torsion is a unique characteristic of all mollusks. 20. Fishes may rely on their lungs for buoyancy 21. Sessile animals are often filter feeders 22. Fruits are expanded anthers 23. During double fertilization, one sperm nucleus unites with the micropspore mother cell. 24. Coenocytic fungi have many nuclei in one extensive cytoplasm. 25. Segmentation allowed the development of specialized appendages. 26. Animals that have nerves always have brains. 27. Mollusks have closed circulatory systems 28. You could kill a starfish by cutting off its arms 29. Reptiles never have gill slits. 30. The heart of an adult amphibian has three chambers. 31. Phloem transports organic nutrients from leaves to roots 32. Sieve tube members are found in xylem. 33. Tracheids are a type of cell in phloem. 34. Xylem transports water from roots to leaves. 35. Sponges have three tissue layers 36. Most higher plants have a minute diploid phase. 37. Many fungi depend on plants for mineral absorption. 38. If a lichen were sprayed with a chemical that blocked photosynthesis, it would probably die. 39. The insects include more species than any other group. 40. Poikilotherms are unable to produce body heat. 41. Leaves are broad and thin to minimize their absorption of oxygen. 42. Water can hold more oxygen than air can. 43. Book lungs are found in crustaceans and mollusks, while external feathery gills are found in arachinids. 44. Saprobes parasitize plants. 45. In coelomates, but not in pseudocoelomates, a peritoneum completely lines the coelomic cavity 46. Trypanosomes possess a kinetoplast ( a mass of mitochondrial DNA close to the nucleus 47. Psychrophiles live in extremely hot conditions9Above 100°c 48. Spirogyra is a plant protist 49. Shigella spp is a bacteria that causes dysentery 50. Anthrax is a bacteria that can be used in terrorism.

Explanation / Answer

Hi Answer:

17. Cnidarians have surface cells called chanocytes that contain prey capturing structures known as nematocytes…..True

18. The coelom of most deuterostomes develops from the outpocketings of the endoderm of the gut. …..True

19. Torsion is a unique characterstic of all mollusks. …..True

20. Fishes may rely on their lungs for buoyancy. …..True

21. Sessile animals are often filter feeders. …..True

22. Fruits are expanded anthers… False (they are expanded ovary)

23. During double fertilization, one sperm nucleus unites with the microspore mother cell... True

24. Coenocytic fungi have many nuclei in one extensive cytoplasm….. True

25. Segmentation allowed the development of specialized appendages. ….. True

26. Animals that have nerves always have brains. ….. True

27. Mollusks have closed circulatory systems…. False (They have open circulatory system)

28. You could kill a starfish by cutting off its arms. …False. (a cut piece of star fish generate a new star fish)

29. Reptiles never have gill slits…. True

30. The heart of an adult amphibian has three chambers… True.( the left atrium, right atrium, and the ventricle.)

31. Phloem transports organic nutrients from leaves to roots….False (it transport nutrient from root to leaves)

32. Sieve tube members are found in xylem… False (Found in phloem tissue)

33. Tracheids are a type of cell in phloem. … False (Found in xylem tissue)

34. Xylem transports water from roots to leaves…True

35. Sponges have three tissues layers. False

36. Most higher plants have a minute diploid phase. …True

37. Many fungi depend on plants for mineral absorption.... True

38. If a lichen were sprayed with a chemical that blocked photosynthesis, it would probably die….False

39. The insects include more species than one other groups…True

40. Poikilotherms are unable to produce body heat... True

41. Leaves are broad and thin to minimize their absorption of oxygen...False (For capturing sun light)

42. Water can hold more oxygen than air…True (water hold 880 g/liter of oxygen atoms and air holds 276 mg oxygen per liter)

43. Book lungs are found in crustaceans and mollusks, while external feathery gills are found in arachinids…True

44. Saprobes parasitize plants.. False (it eat dead plants)

45. In coelomates, but not in pseudocoelomates, a peritoneum completely lines the coelomic cavity…True

46. Trypanosomes possess a kinetoplast (a mass of mitochondrial DNA close to the nucleus…True

47. Psychrophiles live in extremely hot conditions above 100 degree…False (Psychrophiles are cold loving)

48. Spirogyra is a plant protest…False (it’s a water plant)

49. Shigella spp is a bacteria that cause dysentery….True

50. Anthrax is a bacteria that can be used in terrorism….True

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