Cycads and Ginkgo are similar in that they produce nonmotile sperm

____________________ Indicate whether the statement is true or false.


False - flagellated

Biology & Microbiology

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As part of your research project, you travel to an island to learn more about the habitats and relationships of spiders, centipedes, and insects. You and your assistant plot out five different areas of the island and count the numbers of spiders, centipedes, and insects living in each plot. Your results show the following:         Plot     Insects    Spiders  Centipedes1300254242617103147152147397805791393The most plausible explanation for the high number of spiders in plot 4 is:

A. The flies and spiders worked together to eliminate the centipedes. B. There are no centipedes to prey on the spiders and there are abundant flies upon which to feed. C. There are too many flies overall. D. The spiders preyed on the centipedes and ignored the flies.

Biology & Microbiology

Once you have had a primary exposure to a specific antigen and encounter this antigen again, you will mount a rapid immune response due to:

A) memory cells. B) antigen-presenting cells. C) cytotoxic T cells. D) antibodies.

Biology & Microbiology

Place the following in order from smallest, simplest, least complex, to largest and most inclusive

A) chromosome, gene, genome, nucleotide B) nucleotide, gene, chromosome, genome C) genome, chromosome, gene, nucleotide D) gene, nucleotide, genome, chromosome E) nucleotide, gene, genome, chromosome

Biology & Microbiology

Which of the following is NOT a characteristic of amphibians?

A. They have lungs. B. They have a cartilaginous skeleton. C. They are ectothermic. D. They have a three-chambered heart. E. They have vertebrae.

Biology & Microbiology