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What type of respiration does earthworm has? In many complex animals, the cells of internal organs are distant from the outside environment; respiratory systems provide the passage of gases to or from internal tissues. In such kind of systems, there is a difference in pressure of a specific gas on opposite sides of a membrane, the gas diffuses from the side of greater pressure to side of lesser pressure, or each gas is transported independently of other gases. For i.e., in tissues a carbon dioxide concentration is high or oxygen concentration is low as a product of active metabolism, oxygen diffuses into the carbon dioxide and tissue diffuses out.
In many lower animals, gas diffusion takes place through a moist surface membrane, as in flatworms; through the thin body wall, as in earthworms; through air ducts, or tracheae, as in insects; or through specialized tracheal gills, as in aquatic insect larvae. In the gills of fish the blood vessels are exposed directly to the external aquatic environment. Oxygen–carbon dioxide swap occurs between the surrounding water & the blood within the vessels; the blood carries gases to and from tissues.
Q How can the endoskeleton of echinoderms be characterized in comparison to analogous structures present in vertebrates, arthropods and molluscs? The echinoderm skeleton is int
Benthic Zone - Organisation of the Marine Ecosystem The benthic zone is divisible into sub zones horizontally. These are depicted in a cross section portion of the marine habi
ATG or AUG: The codon for the methionine; the translation initiation codon. generally, protein translation can only start at the methionine codon (although this codon might be fou
Clinical Manifestations i) Evidence of Systemic Infection Fever, chills, rigor, night sweat, loss of weight, arthralgia, arthritis, backache, muscle pain. ii) Ev
Define the Skeletal muscle A. Binding of calcium ion to its receptor site on the actin molecule blocks the attachment of the head of the tropomyosin molecule to its binding sit
Three point charges are located at the corners of an equilateral triangle. Find the magnitude and direction of the net electric force on the 1.60 uC charge. (Let A = 1.60 uC, B= 6.
What organic molecules make up the cell membrane?
what type of gametes would be produced from genotype AA, Bb, AABb and someone who is heterozygous for 3 traits
The dangers of working in labs with animals will be minimised if the following precautions are taken: 1. Wash all dissection instruments in disinfectant after use. 2. Never
difference between axon and cyton
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