Circulatory system in arthropods-respiratory pigments
What type of circulatory system present inside the arthropods? Do these animals have respiratory pigments and heart?
Expert
In the arthropods respiratory system is open (or lacunar). Blood, also recognized as hemolymph, is pumped by the heart and falls in cavities (or lacunas) draining and irrigating tissues.
Every arthropod has heart. Arachnids and Crustaceans have respiratory pigments. Insects don’t have respiratory pigments because their blood doesn’t carry gases (in them gases reach cells and tissues by the tracheal structures).
Freud, the father of psychoanalytic theory, proposed that every individual's personality is the product of a struggle among three interacting forces- the id, the ego, and the superego. Freud theorized that there are four universal stages of psycho-sexual development which are decisive in
Levels of Management Business organizations are characterized by the presence of a chain of command- the chain of superiors and subordinates from the highest level i
Explain the cell division during first stage of embryonic development called? How is this stage classified?
'Motivation' is derived from the word 'motive. Motive refers to the needs, wants, drives, impulses within individuals. Definition Motivation may be defined as the process of stimulating people to action, to accomplish desired goals. It involves arousing needs and
Explain how gymnosperms are different from the pteridophytes and bryophytes?
What is the function of the secretions of prostate, bulbourethral glands and the seminal vesicle within reproduction?
What is meant by the Channel?
Criticism of Taylor's Contribution Scientific Management has contributed a lot to the science of management but it was criticized on the following grounds: 1)
Are the cells of connective tissue faraway or near to the others? Answer: The relative big spacing among cells is a typical characteristic of the connective tissue.
From intestinal lumen via to the tissues - describe the route of nutrients after digestion?
18,76,764
1959251 Asked
3,689
Active Tutors
1460109
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!