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BIOL 3156 Study Guide - Final Guide: Meiosis, Trophoblast, Psen1

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emeraldcamel135
2 Jul 2014
School
LSU
Department
Biological Sciences
Course
BIOL 3156
Professor
All

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Document Summary

Study of an embryo until time of parturition. Fertilized egg; union of egg and sperm to form a diploid cell. Morphological, biochemical, and physiological differentiation of an individual; More general features that are common to all the members of a group are in the embryo developed early than the more specialized features that distinguish the various members of the group. Development of an individual from fertilization to death. Epigenesist ; all parts of the embryo arise in succession; There are no males in a population, but generations kept producing. Recognized that all animals come from eggs, ovo omnia. Can tell if two organisms are in the same family if their larvae are similar. Structures derived from a common ancestral structure (ex human arm, bat. Structures perform a similar function but do not arise from a common ancestor. Homologous structures wing) (bird wing and bat wing) Disorder of phocomelia (absent limbs or appendages); thalidomide given as a morning-sickness drug.

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Related Questions

1. A plant the lacks petals and has well-developed anthers ismost likely

pollinated by fruit-eatingmammals.
pollinated by bees.
pollinated by birds.

pollinated by wind.

2. SELECT EACH TYPE of tissue that may be found in a maturefruit or seed. Can be more than one

Diploid sporophyte tissue from theprevious generation
Triploid endosperm
Diploid embryonic tissue
Haploid sperm cells

Tissue from the female gametophyte

3. Based on the outcome for plants, a monkey eating a banana isa

parasite.
pollinator.
disperser.

fertilizer.

4. Select all of the environmentswhere seeds would be an advantage over spores. Can be more thanone

Deserts
Areas with unpredictablerainfall
Wet humid swamps
Open habitats with sparsevegetation

Under a dense forest canopy

5. Select all the advantages that seeds have over spores.

Seeds have increased droughtresistance.
Long term dormancy ispossible.
Sexual reproduction is onlypossible with seeds.
Nutrition is packaged with theembryo.

Widespread dispersal is possible with a seed coat.

6. Nectar is a sugar-laden liquid that is very energeticallyexpensive to produce. Why do plants allocate resources to produceit instead of just producing more flowers?

Nectar serves as an enticement forinsects.
Nectar is sticky and traps windborne pollen.
Nectar provides nutrition to thedeveloping embryo.

Nectar provides energy during pollen tube formation.

7.The dried pericarp that forms the peanut shell provideevidence that peanuts are

legumes.
drupes.
samaras.

pomes.


8. All members of the Anthophyta have

nectaries.
animal pollinators.
scented flowers.
ovules enclosed in carpels.

fleshy fruits for dispersal.

9. Why is external water not essential for fertilization in seedplants?

Ovules are contained within thepollen.
Sperm cells are used to transportpollen to the archegonia.
Seed plants use pollen instead ofsperm for fertilization.
The sperm cells in seed plants arecapable of resisting desiccation.

Pollen grains are transported by wind or an animal.

10.Select the true statements concerning seeds. Can be more thanone

Seeds allow for dormancy untilfavorable conditions arise.
The fruit provides nutrition to thedeveloping embryo.
The ovule dries and forms the seedcoat.
The seed stores all of thenutrition and water the embryo needs to germinate.
Seeds can resist conditions thatwould kill a live plant.

Seeds are key to wide dispersal of offspring.

11. Select the true statements concerning sperm and pollen. Canbe more than one.

In seed plants the entire malegametophyte is dispersed.
The pollen fertilizes the egg.
The pollen tube facilitates thepollination of the ovule.
Pollen transports the cells thatform the sperm but only the sperm fertilizes the egg.

Unlike mosses and ferns water is not needed for fertilization inseed plants.

12.Check which of the following are correct regarding thebenefit of seeds. Can be more than one.

Seeds protect the young embryo byenclosing it in several layers of gametophyte tissue.
Seeds provide a source ofnourishment to the embryonic plant.
The integument forms a seed coatthat protects against desiccation.
Seeds provide a structure in whicha dormant embryo can avoid unfavorable growing conditions andgerminate when conditions improve.

Seeds are a means to transport offspring away from the parentalplant.

13. A fruit-bearing dioecious flower would have

a gynoecium.
neither an androecium nor agynoecium.
an androecium.

both an androecium and a gynoecium.

14. A researcher brings a sample of dry soil to the lab, wetsit, provides ample amounts of fertilizer, and places the soil in acontainer in a greenhouse. Which type of plant would be leastlikely to emerge?

Corn
Sunflower
Liverwort
Wheat
Pine seedling

1. CAN BE MORE THAN ONE The arthropods are the most successfulgroup of animals; several key features explain their success. Checkall of the features that one would use to classify members intothis phylum.

growth takes place throughecdysis
a rigid exoskeleton made ofchitin
closed circulatory systems
jointed appendages
a rigid exoskeleton made ofkeratin
segments specialized intofunctional tagmata
2. An entomologist observed a locust sitting on a branch pumpingits abdomen like an accordion. What is the insect doing?
Stretching out its pedipalps
Assisting gas exchange in thetracheal system
Speeding the flow of blood throughits veins and arteries

Clearing its spinnerets

3.Dibenzoylhydrazines are a category of molecules that have beenused as insecticides. They work by blocking ecdysteroid receptors.How does this kill an insect?

The chitinous exoskeleton isdissolved.
The insect can no longer excretenitrogenous wastes.
The insect can no longer coordinateits movements.

The insect cannot molt.

4. The grasshopper equivalent of an ear is found

on the side of its head.
on the abdomen.
Grasshoppers do not have afunctional equivalent to ears.

directly behind the antennae.

5. A snail in your garden and an oyster are quite different inappearance. What would be evidence to justify grouping themtogether?

Both have a mantle capable ofsecreting calcium carbonate.
Both use siphons to obtainoxygen.
Both have sensory antenna.

Both use a radula for feeding.

6.Barnacles are sessile filter feeders but unlike bivalves theyhave internal fertilization. How do they solve this problem?

They are only capable of asexualreproduction.
The filter sperm from the watercolumn.
They are hemaphrodites withespecially long penises.

They get fertilized during free living larval stages.

7. Bivalves lack a radula. How dothey eat?

The gills filter water and extractorganic matter.
The mantle traps and moves sedimentto the stomach for digestion.
Inhalent siphons suck water intothe mouth.

Most bivalves have photosynthetic endosymbionts in the visceralmass.

8.If a marine biology student discovered a dorsoventrallyflattened marine worm, what would be an effective way to determineif the specimen was a flatworm or a ribbon worm?

Examine the morphology of theexcretory system.
Look for a head at the anteriorend.
Determine the number of embryonicmembranes.

Look for an anus.

9.Inside its beak an octopus has a rasping tongue that is usedto tear apart food, which gastropod structure is this analogousto?

Nephridium
Radula
Shell

Mantle

10.Pinworm is spread by contact, and the worms cause severeitching around the anus. Why is it so common?

Insect vectors spread thedisease.
The intense itch produces anintense desire to scratch.
The eggs end up in the soil.

Sometime people don't wash their hands after scratching theirperi-anal region.

11.Why would a leech have a hard time feeding if it did notproduce anticoagulants?

The blood would stop flowing aftera short time.
The leech would have a hard timeremaining attached to its host.
The leech would have a hard timelocating appropriate hosts.

The pain of the leech bite would cause the leech to bedetected.

12.The scolex of a tapeworm contains the mouth and the anteriorneural ganglia.

True

False

13.In what way are a human and a crab similar?

Both have a continuos growthpattern.
Both have closed circulatorysystems.
Vertebrates and arthropods aredeuterostomes.

Both have muscles that pull against rigid skeletons.

14.What is a simple way for determining if an annelids is apolychaete or a clitellate?

The amount of setae
Possession of a closed circulatorysystem
The layout of the digestivesystem

The number of segments

15.At a celebratory dinner for a recent publication, a marinebiologist ordered the lobster claw appetizer. What part did sheorder?

Telson
Uropods
Nauplius

Cheliped

16.Humans have directdevelopment, a closed circulatory system, well-developed eyes, andlarge brains. Which mollusk also shares these features?

Octopus
Slug
Chiton
Nudibranch