Biology, 07.03.2020 02:23 JellalFernandes

Amniotes are vertebrates that have protective membranes around their embryos, to provide a watery environment for the development of the embryo. What other characters do amniotes have in common?

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Answer from: kitttimothy55

-Includes reptiles, birds, and mammals

-All amniotes are tetrapods and vertebrates

-May involve a shelled egg or internal gestation

-Do not need for moist environment for reproduction

-Derived characters that identify an amniotes are 3 extra embryonic membranes: Chorion, Amnion, Allantois

-are Covered by shells

-Most hard and calcified

-Some soft (monotremes)

Answer from: lamooothegoat

Explanation:

Anatomy

They are four-limb animals(tetraploid) with backbone (vertebrate.)Some walk close to the ground(lizard) while some e,g man, birds, walk uprightly with straighter limbs, and head far away from the ground.

They processes diaphragm for efficient muscular supply of oxygen, different from skeletal muscles for walking.

Circulation

They have efficient circulatory system of the heart and vascular system for distribution of blood containing oxygen and nutrients. The heart is made up of chambers which varies from 3 to 4. The chambers enabled the heart to pumped blood in pulmonary circulation for oxygenation, and to systemic circulation to reach all the systems of the body.

Temperature variation.

Amniotes biochemical reactions is influenced by fluctuations in the surrounding environments. They are made of enzymes which are sensitive to environmental temperatures. Based on this they can be ecothermic and endothermic. Reptile body temperature fluctuates with the immediate environments thus they lack ability to regulate their body temperature. Mammals including man and birds are endothermic. They generate their body heat and therefore temperature irrespective of fluctuations in external environment. Their body temperature are relatively constant.

Water conservation

They have efficient kidney for re-absorption of water into the blood during dehydration, a well developed Gastrointestinal tract for nutrient and food absorption, and lachrymal gland to moisten the eyes and prevent drying out.

Note some animals are tetraploids and vertebrates, but are not Amniotes e.g Amphibians, and Fishes, Therefore these animals should not be classified as Amniotes . They lack complex features listed above.

Answer from: Quest

Yes because i am a god

Answer from: Quest

Science27 of the most iconic, jaw-dropping photos of the earth and the moon from spacedave mosher oct 1, 2018, 11: 13 am etnasa/flickrapollo 11 astronauts took this photo of earth on july 20, 1969.from the ground, earth looks like a boundless fertile plain that beckons to be explored and exploited.but astronauts would beg - and even plead - to differ."you realize that people often say, 'i hope to go to heaven when i die,'" jim lovell, an astronaut who flew on the apollo 8 and apollo 13 missions to the moon, previously told business insider. "in reality, if you think about it, you go to heaven when you're born."lovell has seen first-hand that we live on a tiny rock hopelessly lost in the void. he's also quick to tell you it's the only one we've got - a fragile spaceship for more than 7 billion people: "you arrive on a planet that has the proper mass, has the gravity to contain water and an atmosphere, which are the very essentials for life. and you arrive on this planet that's orbiting a star just at the right distance - not too far to be too cold, or too close to be too hot - and just at the right distance to absorb that star's energy and then, with that energy, cause life to evolve here in the first place. in reality, you know, god has really given us a stage, just looking at where we were around the moon, a stage on which we perform. and how that play turns out is up to us, i guess."humanity has recorded photos of earth from hundreds, thousands, millions, and even billions of miles away, some of them taken by lovell himself.these images not only scientists study our dynamic world, but also understand how a habitable planet looks from afar, which aids the search for more worlds. most importantly, however, the images underscore our peculiar existence on a mote of cosmic dust.take a moment to ponder 27 of the most arresting images of earth that humankind has ever captured from space.a

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Amniotes are vertebrates that have protective membranes around their embryos, to provide a watery en...