In most birds air sacs are ____________ in number??
A. 10
B. 3
C. 4
D. 9
Category: Biology Mcqs
On average there are _______ or more thylakoid per granum??
A. 60
B. 50
C. 40
D. 70
Antherozoids the male gamete in bryophytes are attracted towards Archegonium i.e. female sex organ by____________??
A. Phototactic phenomenon
B. Chemotactic phenomenon
C. Geotropic phenomenon
D. Chemotropic movement
Allium cepa is the scientific name of______________??
A. Onion
B. Amaltas
C. Potato
D. Tomato
The system well developed in the acoelomate is___________??
A. Excretory system
B. Nervous system
C. Transport system
D. All of these
Exoskeleton of a marine snail is composed of________________??
A. CaPO4
B. CaCO3
C. CaSO4
D. SiO2
Which one gives blue colour with iodine_______________??
A. Starch
B. Glycogen
C. Cellulose
D. Polysaccharide
Sperms released in water are carried to the mesenchyme in sponges by__________??
A. Amoeboid cell
B. Stipules
C. Spicules
D. Spines
Which type of the receptors are present in the ear__________________??
A. Chemoreceptors
B. Mechanoreceptors
C. Photoreceptors
D. Thermoreceptors
An infectious disorder of respiratory system is_________________??
A. Cancer
B. Asthma
C. Tuberculosis
D. Emphysema
