In the animal subkingdom ________, the animals lack symmetry and possess neither tissues nor organs.

Fill in the blank(s) with the appropriate word(s).


Parazoa

Biology & Microbiology

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Territorial behavior includes some form of advertisement, threat, and combat

Indicate whether the statement is true or false

Biology & Microbiology

In meiosis chromosomes go through _________ consecutive cell divisions that end with the formation of _________ haploid nuclei

A) two, four B) two, two C) two, eight D) two, six

Biology & Microbiology

Why is the study of biology central to the understanding and solving of the world's great environmental problems?

What will be an ideal response?

Biology & Microbiology

Type I Helper T cells are involved in

A. innate immunity B. humoral immunity C. cell mediated immunity D. chemical nonspecific

Biology & Microbiology