_______ are the first group of invertebrates which have developed a closed circulatory system.?
A. Nematods
B. Annelids
C. Arthropods
D. Molluscs
Category: Biology Mcqs
Total number of amino acids discovered so far in cells and tissues are______________??
A. 20
B. 25
C. 150
D. 170
At which stage in the life cycle of Rhizopus meiosis takes place??
A. Formation of sporangiophore via germination of zygospore.
B. Formation of spores in sporangia
C. Fusion of two hyphae
D. Formation of Zygote by fusion of gametangia.
Which of the protozoa has a striking resemblance to collar cells in sponges_____________??
A. Zooflagellates
B. Choanflagellates
C. Trypanosomoa
D. Trichonymphas
Oyster mushroom is an example of predator fungi which attack on______________??
A. Pin warms
B. Tape worms
C. Round worms
D. Platehelminthes
According to two kingdom classification fungi were placed in kingdom___________??
A. Plantae
B. Animalia
C. Protista
D. Fungi
In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon____________??
A. Their physical properties like size
Value of resting membrane potential is_____________??
A. 0.03 V
B. 0.05 V
C. 0.07 V
D. 0.09V
All of the following are involved in nitrification except?
A. Nitrobacter
B. Nitrosomonas
C. Rhizohium
D. All of these
The windpipe or trachea lies??
A. Dorsal to oesophagus
B. Ventral to oesophagus
C. Lateral to oesophagus
D. None of these
