A. mitochondria
B. golgi complex
C. endoplasmic reticulum
D. lysosomes
In life cycle of us megaspores produced by megasporangium divide into 4 megaspores by__________________?
A. Mitosis
B. Meiosis
C. Both depending upon the conditions
D. None of these
Exoskeleton of a marine snail is composed of________________?
A. CaPO4
B. CaCO3
C. CaSO4
D. SiO2
Today the land habitat is dominated by__________________?
A. Fungi
B. Gymnosperms
C. Angiosperms
D. Tracheophytes
Mammals became dominant in__________?
A. Proterozoic era
B. Mesozoic era
C. Paleozoic era
D. Cenozoic era
Root like structure in saprotrophic fungi are called_______________?
A. Rhizodis
B. Haustoria
C. Hyphae
D. Constricting rings
Water is _________ times viscous than air?
A. 50
B. 1000
C. 5000
D. 8000