-
The phylum that includes Ephedra the plant from which ephedrine is extracted:
Gnetophyta
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How many cells are there in a mature male gametophyte of longleaf pine
4
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How many cells are there in a mature male gametophyte of an angiosperm
2
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How many cells are thre in a mature female gametophyte of an angiosperm
7
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Which of the following phyla is monotypic (single species)
Ginkgophyta
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In what plant embryological stage are the 3 tissue systems first visible
heart-shaped
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What is included in the Bark of a tree
- periderm
- phloem
- vascular cambium
-
THe seed coat develops from what kind of tissue
integuments
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which plant hormone controls a plant's response to stress dormacy
abscisic acid
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If a fruit develops from tissue of several flowers, the fruit would be called
multiple
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A dry, dehiscent fruit in which each carpel separately
capsule
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Derivative cells are
destined to specalize
-
the opening in a stoma is surrounded by
guard cells
-
epigeous means
germination with cotyledons appearing above ground
-
The combined layers, phelloderm + Phellogen + Phellum, make up the
Periderm
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The visibility of growth rings in wood (as light and dark bands) can be explained by:
spring wood differing in cell size from summer wood
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The cortex of stems and roots, middle portions of leaves, and the bulk of fruits consist mainly of
parenchyma
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Which of the following is a primary meristem
procambium
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which of the following cell types is alive at maturity but incapable of division
sieve tube member
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which cell type is found in the hardest of plant parts
sclereid
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specalized cells found only in porifera
choanocytes
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what is the feeding mode of sponges
filter feeding
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In sponges water always exits through the
osculum
-
Mineral components of sponge bodies, calcareous or silicious that provide support
spicules
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The large interior cavity that occurs in some sponges is the
spongocoel
-
the level of organization in the porifera
cellular
-
eudocoelomate animals are distinguished from pseudocoelomates by the presence of the
peritoneum
-
The hole that develops by gastrulation
blastophore
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The embryonic stage of animal development following the zygote consisting of a solid ball of cells
morula
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Characterized by a lack of symmetry, tissues or organs
parazoa
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Which of the following cell types has sieve areas only
sieve cell
-
Welwitschia the strange desert plant with ever-growing leaves is a member of
Gnetophyta
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Flowers with reduced or absent perianth are usually involved in this pollination syndrome
anemophily
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non-directional movements of plants in response to touch are called
thigmonasty
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which sponge cell type secretes the spicules
archaeocyte
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