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Which group has four extraembryonic membranes aquatic animals or land animals?
The answer to this is not based on where the animal lives but on the type of animal. Animals that lay eggs have fewer extraembryonic membranes than placental mammals...there are mammals in the ocean as well as on land.
Why are mammals considered to be amniotes even though most mammals do not produce an amniotic egg?
Mammals are considered amniotes because they share a common ancestor with reptiles and birds, which do produce amniotic eggs. While most mammals do not lay eggs, they still develop within an amniotic sac in the uterus. The presence of extraembryonic membranes, such as the amnion, allantois, and chorion, during embryonic development in mammals is a key characteristic that aligns them with other amniotes.
Are rods and cones sensitive to light?
Both rods and cones are light receptors. Rods are connected many to onr neuron, and are good for detecting low-light and movement, but not color. Cones are one to a neuron and detect color. Both are present in most if not all mammals and avians.
What is a muscular pear shaped organ in which a fertalized egg develops called?
Well, there's different parts of the female avian's reproductive anatomy that the egg is developed. The whole entire thing is called the reproductive tract, but not the uterine tract because birds do not have a uterus like mammals do.Fertilization starts at the Infidibulum, and the first part of the tract that makes the chalazae, which is the first protective secretion around the ovum.At the Magnum, the bulk of the egg white is produced.At the Isthmus, soft shell membranes are produced to surround the secretions and ovum.Next is the Shell Gland, where calcium (or Calcareous) secretions develop and deposit to create the hard shell of the egg.At the Vagina, the egg is expelled to the outside world.The fertilised egg (zygote) develops into an embryo (and later, a foetus) in the uterus, which is the largest internal female organ.
Why do warmblooded mammals need more mitochonodria then cold-blooded mammals?
there are no cold blooded mammals no there are no cold blooded mammals
Why are dolphins sensitive?
because dolphin is mammals
What is an amnion?
An amnion is the innermost membrane of the fetal membranes of reptiles, birds and mammals.
Which grop has four extra embryonic membranes aquatic or land animals?
Land Mammals
What are the bristle-like sensitive hairs on the faces of many mammals?
whiskers
Why does it look like animals don't blink?
Many birds, reptiles, and mammals have nictitating membranes on their eyes. These membranes are transparent and can blink while leaving the eyes open.
Which group has four extraembryonic membranes aquatic animals or land animals?
The answer to this is not based on where the animal lives but on the type of animal. Animals that lay eggs have fewer extraembryonic membranes than placental mammals...there are mammals in the ocean as well as on land.
Do bees have tastebuds?
Not in the same sense as, say, mammals, but their antennae are very sensitive to scents.
Vipers have heat sensitive?
Vipers have a line of heat sensitive pits, which detect Infra Red radiation given off by mammals. (their primary food source)
What are a platypus's claws used for?
Platypuses are unusual in that they are semi-aquatic mammals with strong claws. Platypuses have claws for digging. These claws have retractable membranes between them. The membranes help when they are swimming, and they are retracted when the platypus is digging its burrow for shelter.
What kind of mammals lay amnionic eggs?
Monotremes lay amniotic eggs. Monotremes include just the platypus, the short-beaked echidna and the long-beaked echidna.There are two mammals that lay amniotic eggs. The two mammals that lay amniotic eggs are echidna and platypus.
Is a frog an amniote?
No, frogs are not amniotes. Amniotes are a group of vertebrates that possess extraembryonic membranes, such as reptiles, birds, and mammals. Frogs belong to a different group of vertebrates called amphibians, which do not have these extraembryonic membranes.
Why are mammals considered to be amniotes even though most mammals do not produce an amniotic egg?
Mammals are considered amniotes because they share a common ancestor with reptiles and birds, which do produce amniotic eggs. While most mammals do not lay eggs, they still develop within an amniotic sac in the uterus. The presence of extraembryonic membranes, such as the amnion, allantois, and chorion, during embryonic development in mammals is a key characteristic that aligns them with other amniotes.
