Which of the following best describes the advantages of retaining the young sporophyte as an embryo within the parent?
A. The embryo is protected from desiccation.
B. The embryo grows better because of nutrients supplied by parental tissues.
C. The embryo is protected from pathogens.
D. The embryo is protected from ultraviolet light.
E. All of the choices provided are correct.
E. All of the choices provided are correct.
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Human genetic diseases such a Cri-du-chat, Angelman syndrome and Prader-Willi syndrome are the result of which type of chromosomal change?
A. Translocations B. Duplications C. Deletions D. Inversions
Select all of the following that are body growth forms of lichens.
_____ crustose _____ fruticose _____ foliose _____ phyticose _____ mycose
What do we call soil particles smaller than 0.002 mm in diameter?
a. sand b. silt c. clay d. loam
Exposure to chromium and ether is linked to ____
a. leukemia b. lung cancer c. bladder cancer d. skin cancer e. liver cancer