Phylum Platyhelminthes

Q. Platyhelminthes is the first phylum to show

1. bilateral symmetry
2. organ level of organisation
3. triploblastic development
4. all the above

Q. Choose the organism which is acoelomate, bilaterally symmetrical, triploblastic:

1. Ascaris
2. Ancylostoma
3. Dracunculus
4. Fasciola

Q. Which one of the following kind of animal is triploblastic?

1. Flatworms
2. Sponges
3. Ctenophores
4. Corals

Q. Hooks and suckers are present in:

1. Tapeworm
2. Earthworm
3. Hydra
4. Pleurobrachia

Q. Characteristic ‘Gemma cups’ are present in:

1. Pellia
2. Anthoceros
3. Marchantia
4. Riccia

Q.

Why are cnidarians not triploblastic?

Q. The green, multicellular, asexual buds are

1. gemmae cups
2. foliose
3. rhizoids
4. protonema

Q. Which among the following organisms have an incomplete digestive system?

1. Fasciola
2. Octopus
3. Asterias
4. Ascidia

Q. The creeping green, branched and mostly filamentous stage found in mosses is known as

1. protonema
2. leafy stage
3. frond stage
4. axoneme

Q. The green, multicellular, asexual buds are

1. rhizoids
2. protonema
3. gemmae cups
4. foliose

Q.

Identify the labels correctly in the given diagram of Marchantia.

1. a - Gemma cup, b - Archegoniophore, c- Rhizoids
2. a - Archegoniophore, b - Gemma cup, c - Roots
3. a - Archegoniophore, b - Gemma cup, c - Rhizoids
4. a - Rhizophore, b - Gemma cup , c - Rhizoids

Q. The digestive system in platyhelminthes has

1. one opening
2. two opening
3. three opening
4. four opening

Q. Gemmae in Marchantia develop in

1. ventral surface of its thallus.
2. none of the above.
3. dorsal surface of its thallus.
4. gemma cups.

Q. Common liver fluke or Sheep liver fluke are the common names of

1. Dracunculus
2. Loa loa
3. Fasciola
4. Enterobius

Q. Common liver fluke or Sheep liver fluke are the common names of

1. Dracunculus
2. Loa loa
3. Fasciola
4. Enterobius

Q. Echinococcus is an example of :

1. Nemathelminthes
2. Platyhelminthes
3. Echinodermata
4. Eubacteria

Q. Platyhelminths are

1. Coelomates
2. Acoelomates
3. Pseudocoelomates
4. True coelomates

Q. First animals that were triploblastic and showed bilateral symmetry and organ level of organisation were a part of:

1. Phylum Ctenophores
2. Phylum Aschelminthes
3. Phylum Platyhelminthes
4. Phylum Cnidaria

Q. Which of the following does not belong to Phylum Platyhelminthes?

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

Q. Platyhelminthes are

1. only parasites
2. free living and some are parasitic
3. mostly endoparasitic and few are free-living
4. only free living

Q. Which of the following kinds of vegetative propagation is/are found in the members of Bryophyta?

1. All the above
2. Budding in secondary protonema
3. Fragmentation
4. Production of gemmae

Q. Choose the stage that infects the intermediate and definitive host of Fasciola, respectively:

1. Miracidia, Metacercariae
2. Metacercariae, Miracidia
3. Miracidia, Rediae
4. Rediae, Miracidia

Q.

Animals in which phylum show triploblasty, bilateral symmetry and cephalisation for the first time?

1. Aschelminthes

2. Ctenophora

3. Cnidaria

4. Platyhelminthes

Q.

Assertion [A]: Platyhelminths are acoelomates.

Reason [R]: Platyhelminths develop three primary germ layers during early embryogenesis.

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 the correct explanation for A.

3. Both A and R are false.

4. A is true and R is false.

Q.

Assertion [A]: Platyhelminths are acoelomates.

Reason [R]: Platyhelminths develop three primary germ layers during early embryogenesis.

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 the correct explanation for A.

3. Both A and R are false.

4. A is true and R is false.

Q. Echinococcus is an example of :

1. Nemathelminthes
2. Platyhelminthes
3. Echinodermata
4. Eubacteria

Q. Which of the following are common features of platyhelminths?

1. Diploblastic nature
2. Acoelomate body
3. Organ level of organisation
4. Bilateral symmetry

Q. In gametophytic phase of mosses, the first stage is called ________ whereas the second stage is called ________.

1. protonema stage, leafy stage
2. thallus stage, protonema stage
3. protonema stage, thallus stage
4. thallus stage, leafy stage

Q. The green, multicellular, asexual buds are

1. foliose
2. protonema
3. rhizoids
4. gemmae cups

Q. Which of the following does not represent gametophytic phase of a bryophyte?

1. Rhizoid
2. Protonema
3. Gemma
4. Seta