Torsion is a unique characteristic of all mollusks Fishes may rely on their lung
ID: 83383 • Letter: T
Question
Torsion is a unique characteristic of all mollusks Fishes may rely on their lungs for buoyancy. Sessile animals are often filter feeders. Fruits are expanded anthers. The spleen filters blood and removes damaged red blood cells. Coenocytic fungi have many nuclei in one extensive cytoplasm. Segmentation allowed the development of specialized appendages. Animals that have nerves always have brains. Mollusks have closed circulatory systems. You could kill a starfish by cutting off its arms. Reptiles never have gill slits. The heart of an adult amphibian has three chambers. Phloem transports organic nutrients from leaves to roots. Sieve tube members are found in xylem. Tracheids are a type of cell in phloem. Xylem transports water from roots to leaves. Sponges have three tissue layers. Higher plants have a minute diploid phase. Many fungi depend on plants for mineral absorption. If lichen were sprayed with a chemical that blocked photosynthesis, it would probably die. The insects include more species than any other group. Poikilotherms are unable to produce body heat. Leaves are broad and thin to minimize their absorption of oxygen. Water can hold more oxygen than air can. Book lungs are found in crustaceans and mollusks, while external feathery gills are found in arachinids. Saprobes parasitize plants. In coelomates, but not in pseudocoelomates, a peritoneum completely lines the coelomic cavity Trypanosomes possess a kinetoplast (a mass of mitochondrial DNA close to the nucleus Psychrophiles live in extremely hot conditions Above 100 degree C Spirogyra is a plant protist Shigella spp is a bacteria that causes dysentery Anthrax is a bacteria that can be used in terrorism. Plants have internal clocks.Explanation / Answer
17. False
The coelom of most deuterostomes develop from outpocketigs of the endoderm of the gut but not from mesoderm.
18. False
Torsion is the unique characteristic of gastropods but not molluscks.
19. False
Fishes do not depend on lungs fpr buyoncy, instead they rely on air filled sac called the swim bladder.
20. False
Some filterfeeders are sessile organisms. They do not move much at all. examples are tunicates, sponges.
21. False
A fruit is a mature ovary.
22. True
Spleen acts as a filter for blood as a part of the immune system. Old redblood cells are recycled in spleen
23. false
Coenocytic fungi have many nuclei scattered throughout the cytoplasm but not in one extensive cytoplasm.
24. false
Segmentation allows for the specialisation of different parts of the organism. but it does not allow
development of specilaized appendages.
25. False
Primitive animals like jelly fishes have nerves oragnised into networks. while they have the ability
to sense and respond to environmental stimuli , they do not have brains.
26. false
Molluscs have open circulatory system where they pump blood into hemoceol with the blood diffusing
back to the circulatory system between cells.
27. false
Starfish has the ability to detach its own arms and sometimes if the arm of a starfsh is cut , it can become a
whole new seastar . Therefore , it is impossible to kill a starfish bu cutting its arm.
28. false
reptiles have gill slits during embryonic development.
29. True
Yes, the adult amphibian has three chambered heart
upper 2 chambers are auricles and the lower one chamber ventricle
30. True
yes, phloem transports oragnic molecules such as sugars from leaves to storage organs or other growing
parts of the plant.
31. false
Seive tube members are found in phloem but not in xylem
32. false
tracheids are the elements found in xylem but not phloem
33. True
Yes, xylem transports water from roots to aerial parts of the plant.
34. false
Sponges have no tissue layers beacuse of the absence of gastrulation during embryonic development.
35. false
Higher plants have dominant diploid phase with minute haplois phase.
36. True
Fungi are heterotrophs. They depend on dead and decaying plants for absorption of nutrients.
37. false
A lichen would not be killed if sprayed with a chemical that blocked photosysnthesis beacuse , itis formed by the
mutualistic association of algae and fungi , where fungi provide moisture and attachment.
38. True
The insects include more species than all other groups combined.
39. False
poikillotherms are able to produce body heat, but they cannot regulate body temperature.
40. False
leaves are broad and thin to allow their absorption of oxygen and nutrients, but nmot to minimise.
41. False
Air can hold more oxygen than water beacuse of its higher conecentrations in atmosphere.
42. False
Booklungs are found in arachnids and external feathery gills are found in molluscks and crustaceans for atmospheric exchnage of gases.
43. True
Saprobes acts as facultative parasites and rely on other plants for food .
44. True
Yes, in coelomates , but not in pseudocoelomates the peritonium completely lines the coelomic cavity.
45. True
Yes, trypanosomes posses a kinetoplast, a mass of mitochondrial DNA lying close to the nucleus.
46. False
Psychrophiles live in extremely cold conditions ranging from -20 degrees to +10 degrees where they have the ability to grow and reproduce.
47. True
Yes , spirogyra is a plant like protist. It is a multicellular organism that has filamentous type of green algae found in fresh water bodies.
48. False
Shigella spp does not cause dysentry, instead they cause shigellosis which is manifested as diarrhea in humans. The bacteria is deposited in feces and can comtaminate water or another person.
49. False
Anthrax is a bacterual infection caused by Bacillus anthracis. It is used as bioterrorist agent beacuse it is easily transferred and has high mortality rate. It spreads poorly beyond the targeted population.
50. True
Yes , plants have internal clocks. The clock responses shown by plants include sleep movements such as closing of flowers , change in leaf positions during nights.
others include changes in gene expression.