Which of the following is true about Digestive system of Echinoderms?
1. Mouth is Ventral
2. Anus is Dorsal
3. Digestive System is complete
4. All of the above
Which of the following is incorrect about Echinoderms?
1. Free swimming larva present
2. Indirect development
3. Excretory system is absent
4. Incomplete digestive system
Which is not true for Echinoderms?
1. Mouth is Dorsal
2. Anus is Ventral
3. Calcerous exoskeleton
4. All of these
Which of the following is not a member of Echinodermata?
1. Antedon
2. Asterias
3. Aplysia
4. Ophiura
Incorrect about the given diagram is
1. External fertilisation
2. Anus is Ventral
3. Radial symmetry
4. Indirect development
Which of the following is incorrect about Echinoderms?
1. Protostomous
2. Deuterostomous
3. Pentaradially symmetrical
4. Spiny skin
How many of the following is the member of Echinodermata?
Sea hare, Sea cucumber, Sea lily, Sea urchin, Sea-pen, Sea fan, Sea anemone
1. 7
2. 4
3. 3
4. 2
How many of the following statement is true for Water Vascular System?
(1)
It is composed of a central ring canal from which radial canals extend
(2)
Tube like appendages called tube feet is present
(3)
It is a modification of one of the several coelomic spaces.
(4)
It works like hydraulic system.
(5)
Water enters the Water Vascular System through a madreporite.
(6)
When the muscles in the tube feet contract the tube foot bends and pull the animal forward.
1. 6
2. 5
3. 4
4. 3
Incorrect statement about the given diagram is
1. Pentaradial symmetry
2. Have power of regeneration
3. Each arm contains a pair of sex organs
4. None of these
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