Which of the following adaptations was a key to allowing conifers to be successful in diverse terrestrial habitats


Answer: evolution of pollen

Biology & Microbiology

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According to the Oparin-Haldane hypothesis, which of the following was probably NOT a major

component of Earth's early atmosphere?

a. O2 (oxygen) b. H2 (hydrogen) c. CH4 (methane) d. H2O (in vapor form) e. NH3 (ammonia)

Biology & Microbiology

Which province of the ocean is found above the continental shelf?

a. abyssal b. benthic c. pelagic d. neritic e. oceanic

Biology & Microbiology

Which sequence accurately describes the path traveled by a new protein from when it first starts to be translated to its release from the cell?

A) nuclear envelope ? ER ? vesicle ? Golgi ? plasma membrane ? external environment B) cytosol ? ER ? Golgi ? vesicle ? plasma membrane ? external environment C) cytosol ? Golgi ? ER ? vesicle ? plasma membrane ? external environment D) plasma membrane ? ER ? vesicle ? Golgi ? cytosol ? external environment E) nucleus ? ER ? Golgi ? vesicle ? plasma membrane ? external environment

Biology & Microbiology

Which of the following layers of the epidermis contains cells that provide protection against UV radiation?

a) stratum corneum b) stratum lucidum c) stratum spinosum d) stratum basale

Biology & Microbiology