Which of the following is not an excretory structure found in invertebrates?
1. Flame cells
2. Malpighian tubules
3. Nephridia
4. Kidney
Nematocytes are present in
(1) Adamsia
(2) Hirudinaria
(3) Sycon
(4) Echinus
Which of the following is dioecious?
(1) Taenia
(2) Fasciola
(3) Ascaris
(4) Earthworm
Which of the following is called pearl oyster?
(1) Dentalium
(2) Pinctada
(3) Pila
(4) Aplysia
Radial symmetry is seen in
(1) Mollusca
(2) Chordata
(3) Porifera
(4) Ctenophora
Ancylostoma is also known as
(1) Pinworm
(2) Hookworm
(3) Flatworm
(4) Filarial worm
Chitinous exoskeleton is present in
(1) Mollusca
(2) Echinodermata
(3) Arthropoda
(4) Porifera
In which of the following are air sacs connected to the lungs?
(1) Neophron
(2) Testudo
(3) Ornithorhynchus
(4) Chelone
Which of the following shows organ and organ system level of organisation for the first time?
(1) Annelida
(2) Ctenophora
(3) Platyhelminthes
(4) Aschelminthes
Which of the following statements about Aschelminthes is incorrect
(1) They are pseudocoelomate
(2) Digestive system is complete
(3) Circulatory and respiratory system is well developed
(4) Distinctive features include –often worm shaped, elongated