Can someone vary whether each statement is true or false? Thank you! 31. The cor

Question

Can someone vary whether each statement is true or false? Thank you!

31. The corpus luteum secretes both estradiol and progesterone.

32. Failure of fertilization of the oocyte causes a decrease in progesterone and estradiol and signals the end of the follicular phase of the menstrual cycle.

33. Mast cells are specifically part of the adaptive immune system

34. Sponges diverged from other animals due to the lack of the tissue and body symmetry.

35. All animals with a true coelom are triploblastic but not all triploblastic animals have a true coelom

Explanation / Answer

31.TRUE:The corpus luteum (Latin for "yellow body"; plural corpora lutea) is a temporary endocrine structure in female mammals that is involved in the production of relatively high levels of progesterone and moderate levels of estradiol

32. .A mast cell (also known as a mastocyte or a labrocyte) is derived from the myeloid stem cell. It is a part of the immune and neuroimmune systems and contains many granules rich in histamine and heparin. Although best known for their role in allergy and anaphylaxis, mast cells play an important protective role as well, being intimately involved in wound healing, angiogenesis, immune tolerance, defense against pathogens, and blood–brain barrier function. True : Mast cells plays a key role in the adaptive immun system

34..Only members of the phylum Porifera (sponges) have no body plan symmetry.    SO that they differs from the other animals.

35..Simpler animals qualified as diploblastic, such as cnidaria (which includes jellyfish, corals and hydra), possess two germ layers. Even simpler animals, such as sponges within the formally termed Porifera phylum, contain no true tissues.

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