TAMU BIOL 112 Exam 3 Questions with
Complete Solutions 2026 Updated.
characteristics of gymnosperms - Answer -ovules born exposed
-no flower, no fruit
-usually arranged in cones (strobili)
-pollen usually carried by wind
-separate female and male gametophytes
-tracheids
-heterosporous
-alteration of generations w/dominant sporophyte
-heterosporous
where did gymnosperms adapt to - Answer where fresh water is scarce, nitrogen poor soil,
coniferious biome
coniferophyta - Answer most diverse gymnosperm today, cone bearers (male pollen cones and
female ovulate cones) ex. pines, spruces, firs.
cycadophyta - Answer central female and male cones, flagellated sperm, fern like fronds
radiate from central stem. ex. Zamia and Sago Palm
Ginkgophyta - Answer one extant tree, herbal medicine, flagellated sperm. ex. Ginkgo biloba
Gnetophytes - Answer 3 distinct genera, male and female storbili, sperm not motile. ex.
gnetum in tropics.
flower in angiosperm - Answer sepal, petal, stamen, anther, filament, carpel, ovary, style
stigma
fruit in angiosperm - Answer -derived from ovarian walls from female and other flower tissue
-protects dormant seed
unisex flowers - Answer only carpels or stamens promotes outcrossing
perfect flowers - Answer they have female and male parts in one flower
, imperfect flowers - Answer female and male parts in different flowers
dioecious - Answer two houses, female and male are in different plants
monoecious - Answer male and female organs are on the same plant
monocot - Answer -1 cotyledon
-parallel veins in leaves
-petals of flowers will be in groups of 3
-vascularly diffuse
-no tap roots
dicot - Answer -2 cotyledons
-network veins
-petals in groups of 4 or 5
-vascular tissue in bundles
-tap root
oddballs - Answer basal organisms: ambarella, water lilies, star anise
magnoliids: magnolia tree, lack pepper tree, nutmeg
eudicots clade - Answer -true dicots
-endosperm in seed is usually absorbed into 2 cotyledons
deuterostome - Answer -bastopore of gastrula becomes adult anus, second opening becomes
mouth
-cleavage is radial and indeterminate
basal animals - Answer Porifera (sponges)
basal eumetazoans - Answer cnidaria, ctenophora
lophotrochozoans - Answer Platyhelminthes, Rotifera, Ectoprocta, brachiopod, Mollusca,
annelida
Complete Solutions 2026 Updated.
characteristics of gymnosperms - Answer -ovules born exposed
-no flower, no fruit
-usually arranged in cones (strobili)
-pollen usually carried by wind
-separate female and male gametophytes
-tracheids
-heterosporous
-alteration of generations w/dominant sporophyte
-heterosporous
where did gymnosperms adapt to - Answer where fresh water is scarce, nitrogen poor soil,
coniferious biome
coniferophyta - Answer most diverse gymnosperm today, cone bearers (male pollen cones and
female ovulate cones) ex. pines, spruces, firs.
cycadophyta - Answer central female and male cones, flagellated sperm, fern like fronds
radiate from central stem. ex. Zamia and Sago Palm
Ginkgophyta - Answer one extant tree, herbal medicine, flagellated sperm. ex. Ginkgo biloba
Gnetophytes - Answer 3 distinct genera, male and female storbili, sperm not motile. ex.
gnetum in tropics.
flower in angiosperm - Answer sepal, petal, stamen, anther, filament, carpel, ovary, style
stigma
fruit in angiosperm - Answer -derived from ovarian walls from female and other flower tissue
-protects dormant seed
unisex flowers - Answer only carpels or stamens promotes outcrossing
perfect flowers - Answer they have female and male parts in one flower
, imperfect flowers - Answer female and male parts in different flowers
dioecious - Answer two houses, female and male are in different plants
monoecious - Answer male and female organs are on the same plant
monocot - Answer -1 cotyledon
-parallel veins in leaves
-petals of flowers will be in groups of 3
-vascularly diffuse
-no tap roots
dicot - Answer -2 cotyledons
-network veins
-petals in groups of 4 or 5
-vascular tissue in bundles
-tap root
oddballs - Answer basal organisms: ambarella, water lilies, star anise
magnoliids: magnolia tree, lack pepper tree, nutmeg
eudicots clade - Answer -true dicots
-endosperm in seed is usually absorbed into 2 cotyledons
deuterostome - Answer -bastopore of gastrula becomes adult anus, second opening becomes
mouth
-cleavage is radial and indeterminate
basal animals - Answer Porifera (sponges)
basal eumetazoans - Answer cnidaria, ctenophora
lophotrochozoans - Answer Platyhelminthes, Rotifera, Ectoprocta, brachiopod, Mollusca,
annelida
