1. moss plants are held in place by threadlike structures called while ferns are supported by

(1 point)
rhizomes; roots
rhizoids; roots and stem
guard cells; rhizomes
vascular tissue; stems
2. ferns are the most abundant of the plants; and they produce to reproduce. (1 point)
gymnosperm; sperm
seedless vascular; spores
nonvascular; shoots
vascular; seeds
3. which of the following is a reason mosses never grow very tall? (1 point)
lack of cell walls
presence of cuticles
more complex reproduction
lack of vascular tissue
4. peat is actually the earliest stage of which will be produced over a long period of time
and with a lot of
(1 point)
coal; pressure
natural gas; moisture
petroleum; heat
petrified wood; air

Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens