Select the attributes that would be useful for distinguishing lycophytes from bryophytes. Check All That Apply Ability to produce seedsAbility to produce seeds Haplodiplontic life cycleHaplodiplontic life cycle Dominance of the gametophyteDominance of the gametophyte Presence of water conducting tracheidsPresence of water conducting tracheids Overall size of the plantOverall size of the plant Usage of stomataUsage of stomata gamete production in aronia and antheridiagamete production in aronia and antheridia

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.