Answer:
Anura
Explanation:
The anura order has some characteristics: they dont have a tail, short but widened body, hind legs very developed and a protactile tongue. So these characteristics represent the common structure of forgs and toads.
Epithelial tissues line the outer surfaces of organs and blood vessels throughout the body, as well as the inner surfaces of cavities in many internal organs. ... Functions of epithelial cells include secretion, selective absorption, protection, transcellular transport, and sensing.
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Answer:
1) the genes and chromosomes do not double after each generations because parental sex cells are haploid and only contain one set of chromosomes. During fertilization the two cells fuse to form a diploid zygote with two copies of genes and chromosomes. For example a normal human has 46 chromosomes (2 copies of 23 chromosomes) during reproduction gametes which contain 23 chromosomes (haploid) fuse to form an offspring with the correct number of chromosomes ( 23 + 23 = 46).
2) offspring only receive one set of chromosomes from each parent so to maintain the chromosome number of humans. If this did not happen you would not be the same species.
D) Freedom 7, or also known as Mercury-Redstone 3....... Hope it helps, Feel free to ask more :)
(a) is false since antibodies are produced by body humoral immune system
