Exam 6 Flashcards
which of the following substances can limmit plant growth in nature
all of these
which 2 elemenets make up more than 90% of the dry weight of plants
O & C
Humus is
organic constituents of soils
in what form do plants take up most soil minerals
as ions dissolved in water
which of the following is an example of fixed nitrogen
NH2 and NO3
Which of the following most accurately describes carnivorous plants
photosynthetic autotrophs
in the nutrition of a plant, which element is classified as a macronutrient
carbon
nitrogen fixation is a process that
converts ammonia to nitrate
among important crop plants, nitrogen-fixing root nodules are most commonly an attribute of
legumes such as peanuts
carnivorous plants have mechansims that trap and digest small animals. the products of this digestion are used to supplement the plant’s supply of
minerals
where would you look to find the gametophyte generation of a flowering plant
in flower parts
what is a radicle
an embryonic root
What are adventitious roots
all of these
which is the most accurate description of how plants grow
by both the addition of new cells and cell expansion
which of the following terms best describes the distinctive architecture of plants
radial symmetry and apical-basal symmetry
alternation of generations in an angiosperm describes the cycle of life stages between
gametophyte and sporophyte
which part of a plant absorbs most of the water and mminerals taken up from the soil
root hairs
vascular plant tissue includes all of the following cell types except
cambiumm cells
pores on the leaf surface that function in gas exchange are called
stomata
one important difference between the anatomy of roots and the anatomy of leaves is that
a waxy cuticle covers leaves but is absent in roots