The coelom of most deuterostomes develops from outpocketings of the endoderm of the gut. Torsion is a unique characteristic of all mollusks0. 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.
18) true. Torsion is present in development of mollusks which helps in rotating the mantle, mass, shell with respect to head helps in proper alignment of the body.
21) false. Fruits are expanded ovary which expands after fertilization results in fruits formation.
22) true. Spleen is the graveyard of the RBCs whre the dead RBCs die.
26) false. Mollusks have open circulation system whre the blood is transported to hemocoel with the surrounding blood cells
30) true. Pholem transport the food from the leaves produced by photosynthesis to the every part of the plant and root.
33) true. Xylem transport the water from the roots to every part of the plant through transpirational pull.
32) false. Tracheid are the one of the division of xylem cells which are involved in water transport
29) true. Amphibians are 3-heart chambered organism
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