Biology Ch. 26-28 Quiz(AT)

Question 1

Do all animals have cells that have a nucleus and cell wall?

Answer 1

No, no cell wall.

Question 2

List the four characteristics that all animals share.

Answer 2

Multicellular, heterotrophic, lack cell walls, and eukaryotic.

Question 3

What is sexual reproduction? Asexual? What is the benefit of each?

Answer 3

Sexual reproduction requires two parents and involves sperm and egg. Asexual reproduction only requires one parent and can be done via fission or budding. The benefit of sexual reproduction is increase in genetic diversity. The benefit of asexual reproduction is that a lot of offspring can be produced in a short amount of time.

Question 4

Skin is an example of _________ tissue.

Answer 4

epithelial

Question 5

Your brain is made up of _______tissue.

Answer 5

nervous

Question 6

Humans are (circle one) vertebrates or invertebrates.

Answer 6

vertebrates

Question 7

Sweating so that eventually I cool down and stop sweating is known as __________.

Answer 7

feedback inhibition

Question 8

Omnivores are animals that eat ___________.

Answer 8

both plants and animals

Question 9

A ________ relationship is one where both organisms are helped.

Answer 9

mutualistic

Question 10

All animals take in _________ and give off ________ during respiration.

Answer 10

oxygen, carbon dioxide

Question 11

__________ system moves materials around the body.

Answer 11

Circulatory

Question 12

________ system helps us eliminate the nitrogen that can be harmful in our bodies.

Answer 12

Excretory

Question 13

What are the three germ layers and what do they give rise to?

Answer 13

Endoderm: digestive and respiratory systems
Mesoderm: muscles, circulatory, reproductive, and excretory systems.
Ectoderm: skin, nerves, and sense organs

Question 14

Label the parts of the gastrula to the right using the following words: mesoderm, blastopore, ectoderm, endoderm.

Question 15

What’s the difference between a blastula and a gastrula?

Answer 15

A blastula is a hollow ball of cells whereas a gastrula has formed a “pocket/cavity” on the inside and has an opening to the outside (blastopore).

Question 16

________ are the only animals without body symmetry.

Answer 16

Sponges

Question 17

What are the two types of body symmetry? How are they different?

Answer 17

Bilateral and radial. Bilateral is divided into left and right halves (two halves) whereas radial is divided into many halves.

Question 18

What is the difference between a protostome and deuterostome?

Answer 18

A protostome is an invertebrate whose blastopore develops into the mouth.
A deuterostome is vertebrate whose blastopore develops into the anus.

Question 19

How do most animals reproduce?

Answer 19

Asexually

Question 20

What are five characteristics of sponges?

Answer 20

Sessile, multicellular, heterotrophic, lack cell walls, and asymmetrical.