Test 3-Rotifera

Question 1

fer

Answer 1

those which bear

Question 2

Complexity

Answer 2

simple/moderate

Question 3

Importance to humans

Answer 3

food for the ecosystem

Question 4

Length

Answer 4

40 micrometers-3 mm long

Question 5

Color

Answer 5

transparent, but appear to be different colors because of the food that is inside

Question 6

Shapes

Answer 6

floaters
creepers/swimmers (worm shape)
sessile

Question 7

Cilia on head

Answer 7

rotate-funnel food in, mouth on top of head

Question 8

Body structure

Answer 8

head (cilia)-swimming and eating
trunk-organs
foot- 2 toes, can move or make sessile

Question 9

Microscopic

Answer 9

have around 900 cells

2000 species

Question 10

Sensory systems

Answer 10

brain (2 lobes), eye spots (light), sensory pits (chemical-nose)

Question 11

Digestive tract

Answer 11

short intestine and anus

filter feeder

Question 12

Mastax

Answer 12

grinding and chewing

Question 13

Muscles

Answer 13

run in all directions

Question 14

Segmentation

Answer 14

DISTINCT

Question 15

Habitat

Answer 15

mostly aquatic-fresh and some marine
some terrestrial (moss)
benthic-live at the bottom or in vegetation of ponds or lakes
some form colonies

Question 16

Roti

Answer 16

wheel

Question 17

Male

Answer 17

job-to fertilize eggs

smaller

Question 18

Female

Answer 18

way more than males

if not fertilized, then become females

Question 19

Amictic

Answer 19

eggs do not need to be fertilized, develop into females

parthenogenesis- type of asexual reproduction egg that does not need to be fertilized

Question 20

Mictic

Answer 20

undergo meiosis, are haploid, can be male or female, if fertilized they secrete a thick shell and can be dormant for months, eventually becoming female