Describe where pollen grains are produced in a plant. Fill in the blank(s) with the appropriate word(s)
ANSWER: A typical anther contains four pouches called pollen sacs. Pollen grains, which are immature
male gametophytes, form inside pollen sacs.
You might also like to view...
Hormone X activates the cAMP second messenger system in its target cells. The greatest response by a cell would come from _____
A) applying a molecule of hormone X to the extracellular fluid surrounding the cell B) injecting a molecule of hormone X into the cytoplasm of the cell C) applying a molecule of cAMP to the extracellular fluid surrounding the cell D) injecting a molecule of cAMP into the cytoplasm of the cell E) injecting a molecule of activated, cAMP-dependent protein kinase into the cytoplasm of the cell
You discover a fungus that makes both sexual and asexual spores. The sexual spores are made in
groups of eight within a structure that bursts open to release the spores. The structures containing sexual spores are found within a multicellular structure that is about five inches tall. Into which group should you classify this fungus?
a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota
A pregnant woman who smokes risks
a. delivering an underweight baby. b. a greater chance of miscarriage. c. a greater chance of stillbirth. d. a greater chance of premature delivery. e. all of these.
The steps of a spiral staircase would compare to what part of a DNA molecule?
a. sugars b. hydrogen bonds c. base pairs d. nucleotides e. phosphates