Phylum Annelida

Q.

Organ system level of organisation is seen in

1. sponges

2. coelenterates

3. cnidarians

4. annelids

Q. Choose the organism which has true coelom:

1. Wuchereria
2. Planaria
3. Nereis
4. Tapeworm

Q.

Mention briefly about the circulatory system of an earthworm.

Q. Metameric segmentation is the characteristic of :

1. Plathylminthes and Arthropoda
2. Echinodermata and Annelida
3. Annelida and Arthropoda
4. Mollusca and Chordata

Q. Which among the following are incorrectly matched?

Animal	Characteristic	Taxon
A. Crabs	Nephridia	Arthropoda
B. Earthworm	Metamerism	Annelida
C. Spiders	Jointed appendages	Arthropoda
D. Nereis	Parapodia	Annelida

1. A
2. B
3. C
4. D

Q. Earthworms and Nereis

1. are monoecious and dioecious, respectively
2. are dioecious and monoecious, respectively
3. are both dioecious
4. carry out asexual reproduction

Q.

How do Planaria reproduce sexually?

Q. Which of the following surface structures helps bacteria in locomotion?

1. Cilia
2. Fimbriae
3. Pili
4. Flagella

Q.

Explain diploblastic and triploblastic organisation.

Q. Flagellated protozoans are

1. Parasitic forms.
2. Free-living forms.
3. Free-living or parasitic forms.
4. None of these

Q. Which of the following is the common characteristic found in all the worms?

1. Endo-parasitism
2. Free-living
3. Metameric segmentation
4. Triploblastic

Q. Excretory organ in phylum Hemichordata is

1. Proboscis gland
2. Gills
3. Collar
4. None of these

Q. The biotic components in the ecosystem include _____A________, _________B_____ and _______C_____.

1. A - producers, B - consumers, C - decomposers
2. A - producers, B - reducers, C - decomposers
3. A - producers, B - consumers, C - autotrophs
4. A - consumers, B - reducers, C - decomposers

Q.

Biradial Symmetry And Lack Of Cnidoblasts Are The Characteristics Of

1. Ctenolana and Beroe

2. Hydra and starfish

3. Ctenophora and Beroe

4. Aurelia and Paramecium

Q. A student was given a specimen to identify on the basis of the characteristics given below.
(i) They are metamerically segmented.
(ii) Presence of closed circulatory system.
(iii) They have circular and longitudinal muscles for locomotion. Identify the specimen.

1. Periplaneta
2. Rana
3. Pheretima
4. Felis

Q. Some of the statements are given below.
I. Porifera to Echinodermata lack a notochord.
II. Platyhelminthes display tissue level organisation
III. Mesoglea is present in coelenterates during development.
I V. Aschelminthes are coelomates.

Choose the correct options.

1. I, II, II and IV are True
2. I and II are True
3. I and Ill are True
4. II and Ill me True

Q. Which type of muscles help in the locomotion of annelids?

1. Longitudinal muscles
2. Circular muscles
3. Oblique muscles
4. All the above

Q.

Which is the excretory organ In hemichordata?

Q. The circulatory system in annelids can be

1. open
2. closed with circulatory fluid
3. closed
4. both open and closed

Q.

Are all bilateral animals triploblastic?

Q.

How do hemichordates reproduce?

Q.

Do arthropods have parapodia?

Q. Choose the correct combination of features of phylum Annelida:

1. Bilaterally symmetrical, metameric segmentation, true coelom
2. Radially symmetrical, tissue level of organisation, diploblastic
3. Bilaterally symmetrical, round cross section, pseudocoelomates
4. Bilaterally symmetrical, flatworms, acoelomates

Q. Metamerism is seen in

1. Molluscs
2. Annelids
3. Echinoderms
4. Cnidarians

Q. Assertion : Lumbricus and Nereis both belong to Annelida.

Reason : They have nephridia.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true but R is not correct explanation of A
3. A is true but R is false
4. A and R are false

Q.

Is the mosquito a protozoan?

Q.

The animals that developed the following features for the first time are grouped under which phylum?

1) True coelom

2) Segmentation

​3) Locomotory organs

1. Aschelminthes

2. Cnidaria

3. Platyhelminthes

4. Annelida

Q. Annelids are

1. Marine animals
2. All of these
3. Terrestrial animals.
4. Freshwater animals

Q.

The body is divided into segments in

1. Fasciola

2. Ophiura

3. Ancylostoma

4. Neries

Q. The worms that aerate soil is

1. Ascaris
2. Taenia
3. Fasciola
4. Pheretima