Empty diatom cells are called___________?

A. Raphe
B. Valves
C. Frustule
D. Girdles

Related Mcqs:

Diatom frustule/ shell is made of_____________?
A. Silica
B. Calcium carbonate
C. Manesium carbonate
D. Both B. and C.
Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called___________?
A. Diffusion.
B. Facilitated diffusion.
C. Passive transport.
D. Active transport.
A pressure created by active secretion of salts and other solutes from other cells into xylem sap is called___________?
A. Transpiration pull
B. Root pressure
C. Osmotic pressure.
D. None of these
branches of biology and medicine concerned with the structure and function of plant and animal cells is called___________?
A. Nephrology
B. Semiology
C. Orology
D. Cytology
Submitted by: Rana Wasim Jamil
If the number of chromosomes in most body cells of a mammal is 40, the cells in the seminiferous tubule will have___________?
A. 40 chromosomes
B. 20 chromosomes
C. 10 chromosomes
D. While some other will have 20
Submitted by: Rashid Mehmood
There are cells in human body called Faggot cells which cause__________?
A. AIDS
B. Tuberculosis
C. Smallpox
D. Leukaemia
Submitted by: Ali Mallah
Who opposed the idea the cell is an empty space bounded by thick wall?
A. Lorenz Oken
B. Schwann
C. Robert Brown
D. Rudolph Virchow
The unicellular organisms ingest large molecules into their cytoplasm from the external environment without previously digesting them. This process is called___________?
A. Diffusion
B. Osmosis
C. Phagocytosis
D. Plasmolysis
Exposure to low temperature stimulates plants to flower. This is called___________?
A. Photoperiodism
B. Thermotropism
C. Vernalisation
D. Thermoregulation
Chemical substances used on living tissues that inhibit the growth of micro organism are called___________?
A. Antiseptics
B. Disinfectants
C. Antibiotics
D. Vaccines