The single healthy megaspore retained within the megasporangium germinates to form an egg containing female gaemtophyte called______________?
A. Ovule
B. Seed
C. Fruit
D. Embroyo sac
A. Aspergillus
B. Penicillium
C. Mucus
D. None of the above
What happens during muscle contraction to the length of each myosin and action filament?
A. Z- lines get closer
B. A band becomes short
C. 1 band elongates
D. There is no change in sarcomere
Biometry is the application of_______ in biology.
A. Algebra
B. Statistics
C. Matrix
D. Geometry
Which of the following cytoskeletal fiber contain tubulin protein?
A. One which help in assembly of sdles during mitosis.
B. One involved in internal cell motion.
C. One involved in maintenance of cell shape.
D. Both b and c
Exoskeleton of a marine snail is composed of________________?
A. CaPO4
B. CaCO3
C. CaSO4
D. SiO2