Flatworm parenchyma cells that are stem cells: a. pigment  b. fixed parenchyma cells c. neoblasts cells  d. neural crest cells  e. chromatophores

Which structures shown above are typically haploid? lect one: A. Plant spores and animal zygotes B. Plant spores and animal gametes C. Plant zygotes and animal zygotes D. Plant gametes and animal zygotes Use the following information to answer the next question. Life Cycle of a Typical Animal Life Cycle of a Typical Plant Male Gametes Female Zygote Male Gametes Female Spores Zygote

Insect wings are coded for by the same gene that creates... A. internal air branches (trachea) B. Their cuticle C. their antennae D. parts of crustacean appendages, like legs

Hox genes Group of answer choices a. are only found in nematodes and arthropods   b. are pseudogenes that occur only in fungal DNA   c. are one of the shared, derived characters that unify fungi and animals   d. are single genes that act as master switches that activate other genes, which ultimately forms an entire segment of an animal's body   e. are pseudogenes that occur only in animal DNA

Hox genes encode transcription factors that a. control segmentation. b. promote determination. c. cause cell differentiation. d. do all of the above.

6)From the menu on the left on Virtual Urchin, click on "embryogenesis to hatching". This will display a video of sea urchin development. Photos of key stages taken with a scanning electron microscope (SEM) are shown next to the video. In addition to watching the video by clicking the play button, you can use the slider at the bottom to move through the stages step by step. Doing this will allow you watch how cell division increases the number of cells from the initial zygote. You'll notice that these divisions start off dividing cells evenly, but at a certain point, there are some smaller cells created. These smaller cells will play very important roles in the later development stages of the urchin, so their creation is a key milestone.   Which round of cell division is uneven? (hint: the SEM images will be helpful) a)First b)Second c)Third d)Fourth e)Fifth

Although ascospores are produced by mitotic division, none of the spores develop into fungi that are identical to either parental hyphae. What is the BEST explanation for this observation?   A. The spores inherit half their genes from each parent.   B. The spores inherit haploid nuclei from their parents.   C. The spores inherit mutations as a result of meiosis.   D. The spores inherit mutations as a result of mitosis.

Which type of cells do meiosis form? a Diploid b Haploid C Body cells d Genetically identical

You are studying reproduction in starfish (also known as sea stars).  You are able to successfully extract sperm and eggs from individuals in the lab and artificially fertilize the eggs.  What is the first thing you expect to see in the zygote/embryo after successful fertilization? Group of answer choices a. development of organs b. development of a barrier against sperm entry c. rapid cell division WITHOUT growth d. rapid cell division with growth

Match the statement with the group – animals, plants, fungi, or a combination. Mitosis forms spores Answer 1- Choose...(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi), (plants only)  - same options for all bellow...... Zygote undergoes mitosis Answer 2Choose....(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi), (plants only) Haploid dominant Answer 3Choose....(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi), (plants only) Meiosis forms gametes Answer 4Choose....(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi), (plants only) Diploid dominant Answer 5 Choose....(animals only), (animals and fungi), (animals, plants, and fungi),(animals and plants), (fungi only), (plants and fungi),…