A terrestrial animal species is discovered with the following characteristics: exoskeleton, system of tubes for taking in oxygen, and body segments (body sections) and jointed appendages. A knowledgeable zoologist could classify this organism as a ? Question 6 options:

echinoderm

Segmented worm

Mollusk

Arthropod

the cell theory states that all living things including animals, as well as plants, are made of cells.

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

digestion

it excretes wastes

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set