Examlex
When bryophyte spores germinate, they first form juvenile developmental stages called rhizoids.
Capillaries
Small blood vessels in the body's circulatory system that facilitate the exchange of water, oxygen, carbon dioxide, and many other nutrients and waste substances between blood and tissues.
Active Transport
The movement of molecules across a cell membrane from a region of lower concentration to one of higher concentration, using energy usually in the form of ATP.
Plasma Membrane
The lipid bilayer membrane that surrounds a cell, controlling the movement of substances in and out of the cell.
Diffuses
The process by which molecules move from an area of higher concentration to an area of lower concentration, a fundamental mechanism in both biological and chemical phenomena.
Q14: If we say that the phenotype of
Q16: Tracheids most likely evolved from vessel elements.
Q28: In bryophytes, rhizoids usually:<br>A)absorb ions.<br>B)absorb water.<br>C)attach to
Q32: The pairing of homologous chromosomes is called:<br>A)synapsis.<br>B)chiasma.<br>C)crossing-over.<br>D)recombination.<br>E)bivalence.
Q33: In DNA replication, the leading strand is
Q37: Which of the following statements about pine
Q40: Which of the following statements about algal
Q46: Endosperm may be an evolutionary derivative of
Q52: Which of the following is NOT a
Q61: In plants, the main role of chemicals