Explanation:
Psi packaging Element is a cis-acting RNA element identified in the genomes of the retroviruses Human immunodeficiency virus (HIV) and Simian immunodeficiency virus (SIV) It is involved in regulating encapsidation of the retroviral RNA, an essential step in replication.
Biology, bio=life, logy is study
The <u>nervous system</u> is the coordinating system of the body.
It consists of the <u>brain, spinal cord</u>, and the nerves.
The two divisions of nervous system are central nervous system and <u>peripheral nervous system</u>.
Answer:
those organisms that decompose the living organisms after death and change them into simpler substances are called decomposers. For example fungi, bacteria,etc. difference between herbivores and carnivore are
the animals that eat green plants are called herbivores but the animals that eat flesh of other animals are called carnivores.
examples of herbivores are cow,goat,etc but examples of carnivores are lion, tigers,etc.
Answer:
The statements in options A,B,C,D and E are all correct.
A. Invertebrates lack a back bone
B. Ecdysozoans typically posses a flexible exoskeleton that protects these animals from harmful external factors like water loss.
C. Deuterstomia, Lophotrochozoa and Ecdysozoa are classes of Bilaterians.
D. Animal A is a bilateral because bilateral embryos are triploblastic possessing three germ layers, are bilaterally symmetrical and lack a back bone.
E. All animal from studies are found to have a common ancestry.