Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Invertebrate zoology > Annelida > Flashcards

Annelida Flashcards

1
Q

What is the literal name of Annelida?

(Remember they are segmented)

A

Annelus (latin)
“Little Ring”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How have annelida evolved throughout the years?

(8 advancements)

A
  • Have a true segmented body
  • True coelom
  • Circulatory system (Pumping heart; 5 hearts).
  • Respiratory system (respiratory pigments).
  • Bilateral symmetry
  • Triploblastic
  • complete digestive tract (mouth and anus)
  • Nervous and excretory system.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the segments called in Annelida and arthropods?

(RStarts with Meta)

A

Metameres

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Segments have external circular rings called?

A

Annuli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the internal segmentats called?

A

Septa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the process in which the body is divided into a series of segments?

A

Metamerism

(Occurs in Arthropods as well).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Each segments have all major organ system : circulatory, nervous and excretory.

(true or false_

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does metamerism do the the body of the annelida?

A

Repeat many organs along the body length.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When the body wall muscles is divided what is the termed used for it?

A

Muscle Block

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the advantages of segmentation?

(3 advantages)

A
  1. If a segment is injured , other segment can still function.
  2. A more sophisticated nervous system.
  3. Independent movement of separate segments.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How many muscle layers do they have?

A

2 muscle layers.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the names of the 2 muscle layers found in Annelida?

A

Outer circular & Inner longitudinal muscle layers.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

All annelids have tiny pairs of chitinous britsles called setae.

(True or false?)

A

False. Hirudinida (leeches) do not have these setae.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the purpose of the setae?

A

Aid in anchorage, and helps firmly grip the medium through they travel/

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Annelid body have a thin outer layer of cuticle surrounding the epidermis.

(True or false)

A

True.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the function of the Epithelium?

A

It secrets outer transparent moist cuticle.

17
Q

Describe the coelom found in Annelida.

(DIVIDED.)

A
  • It is well-developed.
  • Divided into compartments by septa.
18
Q

What is the function of the septa in the Annelida?

A

It is a cross wall that prevents fluids from shifting from one body region to another.

19
Q

What is the function of the Coalomic Fluid?

(what type of skeleton?).

A

Hydrostatic skeleton.

20
Q

What are the specialised respiratory structures?

A

Gillsa and Parapodia.

21
Q

Open or closed circulatory system?

A

Closed circulatory system.

22
Q

What are the main features included in the closed circulatory system of annelida?

A
  • Blood vessels.
  • dorsal and ventral longitudinal vessels
  • Aortic arches (heart). Pumps blood segmentally arranged.
23
Q

Respiratory pigments are found where?

A

In the coelom fluid and blood cells.

24
Q

Where do Annelida live?

(Habitat)

A

Moist terrestrial soils, freshwater and warine.

25
Q

What is the most family annelida?

A

Earthworms.

26
Q

How many classes do annelida have?

A

2 main class and 2 main subclass.

27
Q

Polchaeta, clitellata (oligochaeta and Hirudinida) describe them.

(hair and habitat distinction)

A

Polychaeta- have many long hairs and are marine worms.
Oligochaeta- have few long hairs and are terrestrial soil worms.
Hirudinida- Have no hairs, and live in freshwater.

28
Q

What is the typical range of size of the annelida?

A

12 to 30 cm

29
Q

What is the diet of oligochaetes

A

feed on;Decaying organic matter, leaves and vegetation, animal matter.

30
Q

Circulation and respiration of annelida.

A
  • Can diffused across body wall through moist skin.
  • Blood flowing through the body wall also exchanges respiratory gases with the atmosphere.
  • Some have gills and lungs to aid in respiration.
  • Blood have O2 and pigments of haemoglobin dissolved in plasma.
  • Oxygen combinded with respiratory pigments dissolve in plasma.
31
Q

NAME the double transport system in Annelids.

A
  1. COelomic fluid
  2. A closoed circulatory system.
32
Q

What does a closed circulatory system mean?

A

Blood flows continually within vessels and capillaries.

33
Q

What is the function of the dorsal vessel in the circulatory system of annelids?

A

The dorsal vessels recieve blood from the blood wall and digestive tract, which then pumps it anteriorly into 5 pairs of heart.

34
Q

What is the purpose of ventral vessel in the Annelida?

A

The heart pumps blood tot he ventral vessel then it is distributed to the brain and the rest of the body.

35
Q

What is the function of the aortic arches?

A

To maintain steady pressure of blood in the ventrla vessels

36
Q

How many hearts does the oligochaeta worm have?

(10 or 5)

A

10 hearts total.
or 5 pairs.

Invertebrate zoology (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions