Phylum Aschelminthes

Q. Select the correct difference between a male and a female Ascaris worm.

	Male Ascaris	Female Ascaris
i.	Longer than female	Shorter than male
ii.	Posterior end is curved	Posterior end is straight
iii.	Cloaca absent	Cloaca is present

1. i and ii only
2. ii and iii only
3. ii only
4. iii only

Q.

Identify the incorrect pair:

1. Wuchereria – filarial worm

2. Ascaris – round worm

3. Ancylostoma – pin worm

4. Taenia – tape worm

Q. The excretory organs in Aschelminthes and Platyhelminthes, respectively, is

1. Flame cells and Renette cells
2. Renette cells and Flame cells
3. Flame cells and Nephrons
4. Renette cells and Nephrons

Q.

The below statements are regarding phylum aschelminthes :

1). They are bilaterally symmetrical and triploblastic

2). Dioecious

3). All are parasitic.

4). Pseudocoelomate

Select the correct answer having a pair of correct characters

1. 1, 2 & 4

2. 1, 2 & 3

3. All

4. 2, 3 & 4

Q.

In which triploblastic animal, coelom is absent?

1. Platyhelminthes

2. Annelids

3. Arthropods

4. Aschelminthes

Q. Ascaris is characterized by the

1. presence of true coelom and metamerism
2. presence of metamerism only
3. presence of neither true coelom nor metamerism
4. presence of true coelom but an absence of metamerism

Q. Which one of the following group of animals are bilaterally symmetrical and triploblastic?

1. Sponges
2. Coelenterates (Cnidarians)
3. Aschelminthes (roundworms)
4. Ctenophores

Q. Nerve cells do not occur in

1. Mosquitoes
2. Coelenterates
3. Nematodes
4. Sponges

Q. First phylum to have complete digestive tract can be represented by:

1. Hydra
2. Taenia
3. Ancylostoma
4. Pheretima

Q.

__________ is a special reproductive structure present in male aschehelminth worm.

1. Spicule

2. Cerci

3. Style

4. Antenna

Q.

A remarkable phenomenon found in aschelminthes which helps them survive in extreme conditions is _____

1. Dioecious

2. Cryptobiosis

3. Pseudocoelom

4. Parasites

Q. Charecters of a phylum are given below. Read those carefully and name the phylum.
a. Spines of calcium carbonate are present on the body.
b. These animals are exclusively marine.
c. They perform the locomotion with the help of tube feet.
d. Their skeleton is mode up of calcareous plates or spicules.

Q. Choose the free living round worm from the following:

1. Ascaris
2. Ancylostoma
3. Wuchereria
4. Caenorhabditis

Q. In echinodermata the important larval form is? A-bipinnaria. B-trochophore C-cercaria.D-amocoete

Q.

Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

1. Sponges

2. Aschelminthes (Roundworm)

3. Ctenophores

4. Coelenterates (Cnidarians)

Q. Fasciola hepatica belongs to class

1. Turbellaria
2. Trematoda
3. Cestoda
4. Nematoda

Q.

A remarkable property found in aschelminthes which helps them survive in extreme conditions is _____.

1. Dioecious nature

2. Cryptobiosis

3. The presence of pseudocoelom

4. Parasitic mode of nutrition

Q. Skeleton in class Demospongiae is in the form of

1. Spongin fibres
2. Calcareous spicules
3. Both B and C
4. Siliceous spicules

Q.

Give the exact location of hydathodes.

Q. Asconoid type of canal system is found in

1. Scypha
2. Leucosolenia
3. Euplectella
4. Hyalonema