Suppose you saw the seedling pictured at the right while walking in the woods.
a. To which gymnosperm phylum does the plant belong?
b. Identify structures a) seed coat and b) cotyledon.
a. To which gymnosperm phylum does the plant belong? Coniferophyta
b. Identify structures a) seed coat and b) cotyledon.
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In which organelle would the defective enzyme be found?
Tay-Sachs disease is an inherited neurological disorder in which a defective enzyme prohibits the hydrolysis of phospholipids called gangliosides. A. lysosome B. cytoplasm C. endoplasmic reticulum D. Golgi apparatus E. mitochondrion
What is the correct sequence of structures through which air passes through on the way into the mammalian lung?
A. larynx ? pharynx ? trachea ? bronchi ? bronchioles ? alveoli B. alveoli ? bronchioles ? bronchi ? trachea ? larynx ? pharynx C. pharynx ? larynx ? trachea ? bronchi ? bronchioles ? alveoli D. pharynx ? trachea ? larynx ? bronchi ? bronchioles ?alveoli E. bronchi ? bronchioles ? pharynx ? larynx ? trachea ? alveoli
Which of the following characteristics distinguishes red algae from diatoms and dinoflagellates?
A) One is a protist, whereas the other is not. B) One is multicellular, whereas the other is not. C) One is eukaryotic, whereas the other is not. D) One lives in an aquatic environment. E) One is photosynthetic, whereas the other is not.
What is unequal crossing over, and what are the products of the process?
What will be an ideal response?