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What are the six criteria used to build a complete evolutionary branch of vertebrates?
Dichotomy in each of the six following criteria builds the vertebrate evolutionary branch: absence of mandibles divides cyclostomes from others; absence of limbs divides fishes from the remaining; absence of osseous skeleton divides chondrichthian (cartilaginous) fishes from osteichthyes; absence of impermeable skin divides amphibians from the terrestrial vertebrates; absence of warm blood (homeothermic body) divides reptiles from birds and mammals; absence of mammary glands and hair divides birds from mammals.
examples on woody perennial Angiosperm species and herbaceous annual angiosperm species. thanks
GENETICS 1. The branch genetics started in 1900 after rediscovery of Mendel's work. 2. Gregor Johann Mendel is called Father of genetics. 3. The t
What is the pineal gland? The pineal gland, also called as pineal body or epiphysis, is situated centrally in the head. It secretes the hormone melatonin, a hormone formed at n
Name the four organisms which are currently in danger of extinction because of human activities?
Electron acceptor is a molecule which forms the part of the electron transport system which transfers electrons ejected by chlorophyll during the process of photosynthesis. Part o
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How did the experiments of Redi and Pasteur refute the hypothesis of spontaneous generation? To refute the impulsive generation hypothesis many experiments were performed. The
Name four substances that have to be excreted from the body. Substances that have to be excreted from the body are:- A) Carbon dioxide, B) urea, C) uric acid, D) s
Q. What are some prophylactic measures for tapeworm infections? The major prophylactic measures against the taeniasis and the cysticercosis are not to ingest raw or badly cooke
Define Fluids requirement to avoid underweight problem? Take fluids only after a meal instead of with or before meals so that food intake is not reduced. High calorie nourishin
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