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
Pseudocoelomate among the following is
(1) Ancylostoma
(2) Nereis
(3) Pheretima
(4) Taenia
Which of the following is not an avian character?
(1) Cartilaginous bones which are pneumatic
(2) Homoiothermus
(3) Hind limbs have scales
(4) Fertilisation is internal