Which of these is unique to flowering plants? a. an embryo surrounded by nutritive tissue b. haploid gametophytes c. double fertilization d. pollen production e. a dominant sporophyte generation

When there is a well-established segment of heterochromatin on an interphase chromosome, there is usually a special barrier sequence that prevents the heterochromatin from expanding along the entire chromosome.

A diagram illustrates that grass is eaten by insects, birds, and mice. The insects are eaten by hawks, snakes, and toads. The birds and mice are eaten by foxes, hawks, and snakes. The toad is also eaten by the snake.

The bridge is connecting two pieces of land that represents two distinct places. What type of boundary is this?

When conducting a biology investigation, why is it important to know the safety rules and symbols?

Fenestrated glomerular capillaries are typically impermeable to

Consider four species of conifers. species a and b are sister species. species c and d are also sister species. the clade containing species a and b is a sister to the clade containing species c and d.

When plants use sunlight to make food, the energy of sunlight is

What mountains are near an active continental margin

What are the reactant required for respiration?

1. What traits do Cnidarians have with all other animals? 2. Which would be considered more advanced, a hydra or a jellyfish? Give 2 reasons. 3. Contrast these body forms: polyp and Medusa 4. How do cnidarians protect themselves? 5.