Module 11 Biology.

Front 1

Do the vast majority of animals have backbones?

Back 1

No

Front 2

How do sponges get their prey?

Back 2

by pulling water into themselves

Front 3

If a sponge is soft, does it contain spicules or spongin? What purpose do these substances serve in a sponge?

Back 3

spongin, these substances support the sponge

Front 4

What is the predominant mode a asexual reproduction in a sponge?

Back 4

budding

Front 5

What roles do amoebocytes play in the anatomy of a sponge?

Back 5

amoebocytes help digest and transport nutrients they help necessary gases such as oxygen to the cells, and they form the spicules or spongin.

Front 6

When does a sponge produce gemmules?

Back 6

a sponge produces gemmules inciement times

Front 7

What is the difference between the nematocysts of a hydra and those of a sea anemone?

Back 7

Hydra nematocysts are triggered with pressure, while the sea anemones are triggered chemically

Front 8

Why do cnidarians not need respiratory or excretory systems?

Back 8

cnidarians do not need theses systems because their body walls are so thin that gases diffuse right through them

Front 9

Some biology books say that jellyfish live "dual lives" why?

Back 9

Jelly fish spend part of their lifes as polyps and the other part as medusas

Front 10

If a jellyfish reproduces sexually, what form is it in?

Back 10

medusa form

Front 11

What is another name for a large coral colony?

Back 11

large coral colonies are called coral reefs

Front 12

What benefits do earthworms give the plants in the soil that they inhabit?

Back 12

earthworms bring minerals up to the lower parts of the soil and mix them with the nutrients at the top of the soil which makes the soil fertile for plants. There tunnels also allow oxygen to travel to the roots of a plant more easily.

Front 13

If you pick up two earthworms and the first feels very slimy near the clitellum and the second does not, what can you conclude about the first earthworm?

Back 13

the first one must have recently mated but not yet produced a cocoon.

Front 14

What similarities exists between the hydra's sexual reproduction and the earthworms? What differences exist?

Back 14

The earthworm is hermaphroditic and the hydra can be as well. However, although a hydra can sometimes mate with itself, an earthworm cannot.

Front 15

What will happen to an earthworm if its cuticle systems?

Back 15

the earthworm will suffocate

Front 16

Why dont planarians need circulatory systems?

Back 16

planarians do not need ciculatory systems because the intestine is so highly branched that all cells are near it, so they can get their food directly from the intestine

Front 17

If a flatworm has no complex nervous or digestive systems, is it most likely free-living or parasitic?

Back 17

parasitic

Front 18

What is the main mode of asexual reproduction in a planarian?

Back 18

when planarians asexually reproduce, they do so by regeneration

Front 19

Although not official toxonomy groups, biologist use the terms ___ and ___ to refer to animals with and without backbones, respectively

Back 19

vertebrates
invertebrates

Front 20

Three basic forms of symmetry among organisms in creation are ___ (any cut through the center produces two equal halfes), ___ (and longitudinal cut through the center produces two equal halves). A round organism like Volvox has ___ , a sea anemone has ___ , and people have ___ .

Back 20

spherical
radial
bilateral
spherical symmetry
radial symmetry
bilateral symmetry