Botany Questions
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What diffuse(s) from fetal blood to maternal blood in the placenta.A) OxygenB) WastesC) AlcoholD) Infectious organismsE) Nutrients
As early as the ________ month, as the brain and spinal cord grow, the fetus can demonstrate movement and respond to stimuli.A) secondB) thirdC) fourthD) fifthE) sixth
Grass flowers lack petals and sepals. Which of the following statements is TRUE?A) These flowers are pollinated at night, so they don't benefit from showy petals or sepals.B) They are pollinated by flies, which don't require showy, scented petals.C) They are imperfect flowers lacking stamen or carpals.D) They are incomplete flowers lacking one or more floral parts.
43) What are the results of double fertilization?A) Diploid zygote and diploid endospermB) Egg cell and sperm cellC) Embryo sac and pollen sacD) Triploid endosperm and diploid zygoteE) A zygote and an embryo
The nervous system forms from theA) ectoderm.B) mesoderm.C) endoderm.D) yolk.E) chorion.
In humans, fertilization occurs in theA) ovary.B) testes.C) uterine tube.D) uterus.E) vagina.
Your biceps muscle is derived from theA) endoderm.B) ectoderm.C) mesoderm.D) blastopore.E) amnion.
Meiosis produces a ________, which eventually gives rise to an egg in an unfertilized seed.A) microsporeB) pollen tubeC) sporophyteD) megasporeE) sepal
) Which of the following is the result of gastrulation?A) A hollow ball of cellsB) A zygoteC) The formation of organsD) A three-layered embryoE) A blastula
________ are modified leaves that are often brightly colored and scented to attract pollinators.A) FilamentsB) AnthersC) PetalsD) StigmaE) Sepals
In humans, implantation occursA) just prior to fertilization.B) immediately after fertilization.C) when the zygote is a blastocyst.D) when the embryo is a gastrula.E) after the formation of the neural tube
Plant cells that are actively dividing are ________ cells.A) differentiatedB) conductingC) vascularD) groundE) meristem
During mammalian development, aA) zygote becomes a blastula.B) gastrula becomes a morula.C) morula becomes a blastula.D) morula becomes gastrula.E) blastula becomes a zygote.
As a morula, the embryo consists ofA) a solid mass of cells, each the size of the zygote.B) three differentiated layers of cells.C) a hollow ball of cells.D) cells that have different DNA content.E) a cluster of cells that are much larger than normal cells.
) The cells that line the inside of the blastopore become theA) skin.B) muscles.C) nervous system.D) skeleton.E)digestive tract
5) The metamorphosis of a caterpillar into a butterfly is an example ofA) direct development.B) placental development.C) indirect development.D) internal development.E) external development.
Birds hatch out of their eggs looking like small versions of the adult. This is an example ofA) direct development.B) genetic dwarfism.C) indirect development.D) internal development.E) external development.
Which of the following statements is TRUE?A) When mature, the carpel will become the seed and the anther will become the fruit.B) When mature, the ovules will become seeds and the ovary will develop into a fruit.C) When mature, the stamen will become the seed and the stigma will become the fruit.D) The filament and anther enclose the stigma and style.E) The style, which is vase-shaped, contains the ovary, stigma, and anther.
The first leaves produced by an embryo while still inside the seed areA) cotyledons.B) endosperms.C) embryo sacs.D) coleoptiles.E) epicotyls.
A flowering plant produces pollen in theA) stigma.B) ovule.C) fruit.D) anther.E) style.