Hemochordata

Q.

Which animal has 32 brains, 300 teeth, and 5 pairs of eyes?

Q.

Explain briefly the role of bacteria in nitrogen fixation.

Q.

In which phylum is pseudocoelom found?

Q.

What animal has no brain?

Q.

What do you mean by visceral mass and mantle.

Q.

Which bacteria fixes nitrogen in the soil?

Q. The first evolved diploblastic, radially symmetrical animals with tentacles belong to the phylum _____.

1. Porifera
2. Platyhelminthes
3. Cnidaria
4. Annelida

Q.

What are the four main characteristics of Chordates?

Q.

What causes a hermaphrodite?

Q.

Is Beijerinckia a free-living nitrogen-fixing microbe?

Q.

What are the 3 classes of Annelida?

Q.

Which Of The Following Is Not A True Fish

1. Starfish

2. Jellyfish

3. Cuttlefish

4. All Of These

Q. Which of the following is not a characteristic of hemichordates?

1. They are widely distributed in shallow, marine and tropical waters
2. They have epidermal nervous system
3. They have cylindrical body
4. Most of them have pharyngeal slits

Q.

Where do nitrogen-fixing bacteria live?

Q.

Name the phylum in which pharyngeal gill slits are present but notochord is absent.

Q.

Give one example of phylum Hemichordata.

Q.

Spicules are calcareous or siliceous structures. Spicules and spongin fibres are present in

1. Aranea

2. Adamsia

3. Euplectella

4. Periplaneta

Q.

What is notochord?

Q.

Do hemichordates have a heart?

Q.

What is common name of Balanoglossus ?

Q.

Nitrogen fixation in root nodules of Alnus is brought about by?

1. Frankia

2. Clostridium

3. Bradyrhizobium

4. Azorhizobium

Q.

What is the largest annelid class?

Q.

Sedantry existence contribute to the organ system design in animals.

1. True

2. False

Q. What is a hemichordate?

Q. Difference between vertebrates and invertebrates

Q. Balanoglossus is considered as a connecting link between chordates and non-chordates.

1. True
2. False

Q. Differenciate between chordata and non chordata?

Q.

Are urochordates protochordates?

Q.

Which of the following organism shows the presence of jointed appendages?

1. Chiton

2. Pila

3. Sea-cucumber

4. Spider

Q. Why octopus is called head-footed animal?