Botany Questions
Explore questions in the Botany category that you can ask Spark.E!
Which covers the outside of the plant body? _________
One of the first events of animal development is the division of this cell, a process called __________
Which of the following would you be unable to locate in xylem tissue?A) TracheidsB) Sclerenchyma cellsC) Sieve tube elementsD) Vessel elementsE) Cell walls with porous dimples called pits
Which of the following statements is incorrect with regard to xylem tissue?A) Xylem is composed of tracheids and vessel elements.B) Water and minerals are transported by xylem.C) Companion cells provide nutrition for tracheids.D) Vessel elements contain pits.E) Xylem cells are dead at maturity.
Parenchyma tissue is a component of the ________ tissue system.A) phloemB) dermalC) vascularD) groundE) epidermal
The dermal tissue system consists ofA) phloem.B) collenchyma tissue.C) xylem.D) epidermis.E) parenchyma tissue.
Of the major tissue systems associated with land plants, the ________ tissue system covers the outer surface of the primary plant.A) groundB) meristemC) dermalD) vascularE) parenchyma
9) During the embryonic stage, a hollow ball of cells is known as aA) morula.B) blastula.C) gastrula.D) larva.E) chorion.
A mad scientist decides to start combining embryos and see what develops. He takes cells from the blastula of a frog with blue skin and transplants them into the blastula of a yellow-skinned frog. The embryo receiving the cells develops blue cells in its brain and spinal cord. The scientist must have transplanted the cells into the ________ of the recipient embryo.A) ectodermB) mesodermC) endodermD) allantoisE) yolk sac
Which of the following occurs in the placenta?A) Eroding blood vessels in the endometrium bathe chorionic villi in pools of maternal blood.B) Fetal blood and maternal blood mix.C) All substances in maternal blood that may be harmful to the fetus are prevented from moving across the walls of the villi.D) The amnion and the chorion grow into the endometrium.E) Hormones are absorbed to prevent them from influencing the developing fetus.
Which of the following is a common function of stems but NOT of roots?A) AbsorptionB) SupportC) AnchorageD) Storage
Which of these hormones stimulates the production of milk?A) ColostrumB) OxytocinC) ProgesteroneD) ProlactinE) Estrogen
At which stage is the human embryo most susceptible to toxic substances?A) Just before birthB) During cleavageC) During organogenesisD) During the fourth and fifth monthsE) During the last trimester
Which of the following characteristics helps differentiate between a monocot and a dicot?A) Presence of vascular tissueB) Seeds covered by a fruitC) Number of flower partsD) Presence or absence of an apical meristemE) Presence or absence of pollen grains
Most fetuses can survive outside the womb after a minimum of ________ weeks.A) 15B) 20C) 32D) 38E) 45
What type of cell activity occurs in the meristem regions of plants?A) MitosisB) Secondary growthC) PhotosynthesisD) Increased water uptake of cellsE) Storage of sugar
The cells of an aging animal function less efficiently becauseA) cell metabolism is slower.B) organelles and cellular components decline.C) damaged DNA cannot be repaired.D) protein synthesis ceases.E) cells can no longer mitotically divide.
The umbilical cord of a mammal connects theA) fetus and the placenta.B) amnion and the chorion.C) yolk sac and the allantois.D) embryo and the amnion.
A human embryo is known as a fetus after ________ weeks.A) 2B) 4C) 8
What cell type permits the continued growth of a plant throughout its life?A) Differentiated cellsB) Ground tissue cellsC) Meristem cellsD) Mesophyll cellsE) Secondary cells